Product name: Arnidiol
Synonym name: Arnidenediol
Catalogue No.: BPF3111
Cas No.: 6750-30-7
Formula: C₃₀H₄₈O₂
Mol Weight: 440.712
Botanical Source:
Physical Description:
Type of Compound: Triterpenoids

Purity: 95%~99%
Analysis Method: HPLC-DAD or/and HPLC-ELSD
Identification Method: Mass, NMR
Packing: Brown vial or HDPE plastic bottle

Storage: Store in a well closed container, protected from air and light. Put into refrigerate or freeze for long term storage.
Whenever possible, you should prepare and use solutions on the same day. However, if you need to make up stock solutions in advance, we recommend that you store the solution as aliquots in tightly sealed vials at -20℃. Generally, these will be useable for up to two weeks.

The product could be supplied from milligrams to grams
Inquire for bulk scale.

For Reference Standard and R&D, Not for Human Use Directly.

Storage conditions：Short-term storage at 2~8℃, long-term storage at -20 ~ -80℃

Introduction/Overview

Natural products, as an important source of drug discovery, play an indispensable role in the long history of human struggle against diseases. From the classic analgesic morphine to the antimalarial drug artemisinin, the rich chemical structures found in nature provide endless inspiration for modern pharmacology. Among numerous natural products, triterpenoids have attracted much attention due to their structural diversity and wide range of biological activities. Ainidiol, as a triterpenoid compound with a unique skeleton, has gradually entered the field of researchers in recent years, and its potential in the anti-inflammatory field is particularly prominent.

The systematic study of Shanjinche diol began with chemical exploration of Asteraceae plants. This compound originally originated from the genus Shanjinche（Arnica）Separated and identified from plants, hence named. Plants of the genus Shanjinche have a long history of application in traditional medicine, often used to treat injuries, inflammation, and pain caused by falls. However, the elucidation of its active ingredients has always been an important topic in modern natural product chemistry. The discovery of Shanjinche diol provides a new molecular basis for understanding the traditional functions of these plants. With the deepening of research, it has been found that kaempferol not only exists in plants of the kaempferol genus, but also in the Eupatorium genus（Inula）It is also distributed in other Asteraceae plants, indicating that it may have broader ecological and biological significance.

From a chemical structure perspective, Shanjinche diol belongs to the Lupane type triterpenoid, with its core skeleton consisting of five hexagonal rings and one pentagonal ring fused together, and having one hydroxyl group at the C-3 and C-28 positions, respectively. This unique structure endows it with specific physicochemical properties and biological activity. Early research mainly focused on its cytotoxicity and anti-tumor activity, but in recent years, its anti-inflammatory mechanism has gradually become a research hotspot. Research has shown that Shanjinche diol can inhibit the production of key inflammatory factors (such as TNF - α, IL-6) and inflammatory mediators (such as NO) by regulating multiple inflammatory signaling pathways, such as NF - κ B and STAT3 pathways, exhibiting multi-target and multi pathway anti-inflammatory properties.

However, despite the significant pharmacological activity of Shanjinche diol, its pharmacological development faces enormous challenges. Its extremely high lipid solubility (LogP>6) and extremely low water solubility (0.0002 mg/mL) severely limit its bioavailability and in vivo efficacy. In addition, its high blood-brain barrier permeability also suggests potential risks of central nervous system side effects. Therefore, how to overcome these deficiencies through structural modification or novel drug delivery systems is the key to promoting the clinical application of Shanjinche diol.

This article aims to provide a systematic review of the research progress on the chemical structure, plant sources, pharmacological activity, mechanism of action, and pharmacological evaluation of Shanjinche diol, and to look forward to its future clinical application prospects, in order to provide reference for the in-depth research and development of this natural product.

Chemical structure and physicochemical properties

The chemical name of Shanjinche diol is (3 β, 28) - lup-20 (29) - ene-3,28-diol, and its chemical structure belongs to the lupine type pentacyclic triterpenoid. The skeleton is composed of five rings: A, B, C, D, and E. Among them, rings A, B, C, and D are six membered rings, and ring E is a five membered ring. There is a hydroxyl group (- OH) attached to each of the C-3 position (A ring) and C-28 position (E ring), which are two key functional groups in its structure. In addition, there is a terminal double bond (C=C) between C-20 and C-29, which is also one of the characteristic structures of lupine triterpenoids. Its molecular formula is C ∝₀ H ₄₈ O ₂, and its molecular weight is 440.7120 g/mol.

From the perspective of physical and chemical properties, Shanjinche diol exhibits typical lipid soluble molecular characteristics. Its oil-water partition coefficient (LogP) is as high as 6.7809, indicating that it strongly tends to be distributed in the oil phase (such as biofilm, organic solvents) in both water and oil phases. This characteristic is directly related to its large hydrophobic triterpenoid skeleton. The extremely high LogP value also directly leads to its extremely low water solubility, with a calculated water solubility of only 0.0002 mg/mL. This extremely poor water solubility is a common challenge in the study of natural products, which means that the solubility and transport capacity of Shanjinche diol in aqueous environments such as blood and cytoplasm are extremely poor, severely limiting its oral absorption and in vivo distribution.

Topological Polarity Surface Area (TPSA) is an important parameter for measuring the ability of molecules to penetrate cell membranes, typically associated with oral absorption and blood-brain barrier permeability. The TPSA of Shanjinche diol is 40.46 Å ², mainly derived from two hydroxyl groups. This value is relatively low, and it is generally believed that molecules with TPSA less than 60-70 Å ² have good cell membrane permeability. Based on its high LogP value, it can be inferred that Shanjinche diol is highly permeable to biological membranes, including the blood-brain barrier. In fact, its blood-brain barrier permeability is predicted to be "high", which is both an advantage (possibly for central nervous system diseases) and a potential risk (possibly causing central neurotoxicity).

In terms of chemical stability, Shanjinche diol, as a triterpenoid compound, usually has certain stability to light, heat, and air. But the two hydroxyl groups and the terminal double bond in its structure are potential chemical reaction sites. Hydroxyl groups can be esterified, etherified, or oxidized, while double bonds can undergo epoxidation, hydrogenation, or addition with electrophilic reagents. These chemical reactions provide the possibility of improving its pharmacokinetic properties through structural modifications. For example, esterification or phosphorylation of hydroxyl groups can introduce water-soluble functional groups to enhance their water solubility; Alternatively, epoxidation of the double bond may alter its interaction mode with the target.

Plant sources and extraction methods

Shanjinche diol mainly comes from Asteraceae plants, among which Shanjinche genus（Arnica）The genus Helix（Inula）Plants are the most common.

1. Shanjinche genus plants This genus of plants is a classic source of kaempferol. For example, the European Mountain Gold Car（Arnica montana L. ) is a famous plant used in traditional herbal medicine to treat inflammation and damage. Both its flowers and roots contain kaempferol, but the content is usually higher in the flowers. In addition, other species of the Shanjinche genus, such as Arnica chamissonis Less. and Arnica cordifolia Hook. has also been reported to contain this compound. Shanjinche diol usually coexists with other triterpenoids (such as Shanjinche lactone, lupinol, etc.) in plants of the Shanjinche genus.

2. Plants of the Convolvulus genus Plants of the genus Convolvulus are another important source of kaempferol. For example, wood fragrance（Inula helenium L. The rhizomes of the plant are rich in various triterpenoid compounds, among which kaempferol is one of them. In addition, the spiral flower（Inula japonica Thunb. and sheep ear chrysanthemum（Inula cappa Species such as Buch. - Ham. ex D. Don DC. have also been reported to contain this ingredient. The genus Convolvulus is also widely used in traditional Asian medicine to treat inflammation, cough, and digestive system diseases.

3. Other plants In addition to the two main genera mentioned above, Shanjinche diol is also occasionally found in other Asteraceae plants, such as certain species of the genus Seneca（Senecio）The genus of Ligustrum（Ligularia）In plants, but the content is usually low.

extraction method The extraction of Shanjinche diol usually follows the classic process of natural product chemistry, which mainly includes the following steps:

1. Raw material pretreatment Crush dry plant materials (usually flowers, rhizomes, or whole plants) to increase surface area and improve extraction efficiency.

2. Solvent extraction Due to the high lipid solubility of Shanjinche diol, non-polar or moderately polar organic solvents are usually used for extraction. The most commonly used solvents include:

   • Petroleum ether High selectivity for fat soluble components, but extraction efficiency may be low.
   • chloroform It has good solubility for triterpenoids and is a classic extraction solvent.
   • ethyl acetate Moderate polarity, capable of extracting various moderately polar components including Shanjinche diol.
   • Methanol or ethanol Although highly polar, it can penetrate plant cell walls and is often used as a crude extraction solvent, followed by liquid-liquid extraction (such as extraction with petroleum ether or chloroform) to enrich lipophilic components.
     Extraction methods can include cold soaking, percolation, or Soxhlet extraction. Usually, methanol or ethanol is used for cold soaking or percolation extraction to obtain the total extract, which is then suspended in water and extracted sequentially with petroleum ether, chloroform, ethyl acetate, and n-butanol. Shanjinche diol is mainly enriched in the extraction sites of petroleum ether or chloroform.

3. Separation and purification After obtaining the crude extract, various chromatographic techniques are required for separation and purification.

   • Positive phase silica gel column chromatography: is the most commonly used method. Use gradient elution systems such as petroleum ether ethyl acetate or chloroform methanol to separate Shanjinche diol based on its polarity.
   • Reverse phase column chromatography Using C18 or C8 bonded silica gel columns, eluted with methanol water or acetonitrile water systems, can more effectively separate compounds with similar polarities.
   • Preparation type high-performance liquid chromatography For high purity requirements or when other methods are difficult to separate, preparative HPLC can be used for purification.
   • Other methods For example, gel column chromatography (Sephadex LH-20) can be used to remove pigments and separate compounds with different molecular weights; High speed counter current chromatography (HSCCC) is also an effective separation method.

4. Structural Identification The purified compound was structurally confirmed by techniques such as nuclear magnetic resonance spectroscopy (NMR, including ¹ H-NMR, ¹ ³ C-NMR, DEPT, COSY, HSQC, HMBC, etc.), high-resolution mass spectrometry (HR-MS), and infrared spectroscopy (IR).

Pharmacological activity research

The pharmacological activity research of Shanjinche diol mainly focuses on anti-inflammatory, anti-tumor, and neuroprotective aspects, among which anti-inflammatory activity is currently a hot research topic.

1. anti-inflammatory activity This is the pharmacological activity of Shanjinche diol that has received the most attention. Numerous in vitro and in vivo experiments have confirmed its significant anti-inflammatory effect.

   • In vitro research In a lipopolysaccharide (LPS) - stimulated macrophage model (such as RAW264.7 cells), resveratrol can significantly inhibit the production of nitric oxide (NO) and prostaglandin E2 (PGE2), and downregulate the expression of inducible nitric oxide synthase (iNOS/NOS2) and cyclooxygenase-2 (COX-2/PTGS2). At the same time, it can effectively reduce the mRNA and protein levels of pro-inflammatory cytokines such as tumor necrosis factor - α (TNF - α), interleukin-6 (IL-6), and interleukin-1 β (IL-1 β). These effects are dose-dependent.
   • In vivo research In classic acute inflammation models, such as the carrageenan induced rat foot swelling model, oral or local administration of kaempferol can significantly reduce the degree of swelling. In chronic inflammation models, such as the Freund's complete adjuvant induced rat arthritis model, Shanjinche diol has also shown potential in reducing joint swelling, lowering inflammation scores, and inhibiting bone destruction. In addition, its anti-inflammatory effect has also been validated in ear swelling and granuloma models.

2. Antitumor activity Early studies reported the cytotoxic effects of Shanjinche diol on various tumor cell lines.

   • cytotoxicity: Arnediol has a certain inhibitory effect on proliferation of human leukemia cells (such as HL-60, K562), liver cancer cells (such as HepG2), lung cancer cells (such as A549), breast cancer cells (such as MCF-7) and melanoma cells (such as B16). Its IC50 value is usually in the micromolar range.
   • mechanism of action Preliminary studies suggest that its anti-tumor mechanism may involve inducing cell apoptosis (by activating Caspase-3 and Caspase-9, upregulating Bax/Bcl-2 ratio), inducing cell cycle arrest (such as G0/G1 phase or G2/M phase arrest), and inhibiting tumor cell migration and invasion. However, compared to anti-inflammatory activity, the research on its anti-tumor activity is relatively insufficient and lacks in vivo anti-tumor experimental data.

3. Neuroprotective activity Due to its high blood-brain barrier permeability, the neuroprotective effect of Shanjinche diol has also attracted attention.

   • In vitro research In glutamate or hydrogen peroxide induced neuronal injury models (such as PC12 cells and primary cortical neurons), pretreatment with kaempferol can alleviate cytotoxicity, reduce lactate dehydrogenase (LDH) release, inhibit reactive oxygen species (ROS) production, and protect mitochondrial function.
   • underlying mechanism Its neuroprotective effect may be related to the activation of Nrf2/ARE antioxidant pathway, inhibition of NF - κ B-mediated inflammatory response, and regulation of apoptosis related proteins. These findings suggest that Shanjinche diol may have potential in the treatment of neurodegenerative diseases (such as Alzheimer's disease, Parkinson's disease) or cerebral ischemia-reperfusion injury.

4. Other activities A few studies have also reported the antibacterial (such as against Staphylococcus aureus and Escherichia coli), antiviral (such as against influenza virus), and anti ulcer activities of Shanjinche diol, but these studies are not yet systematic and need further verification.

Mechanism of action and molecular targets

The pharmacological activity of Shanjinche diol, especially its anti-inflammatory effect, is achieved through the synergistic regulation of multiple targets and signaling pathways. Based on existing research, its core mechanism of action can be summarized as follows:

1. Inhibition of NF - κ B signaling pathway NF - κ B is the core transcription factor of inflammatory response. In the resting state, NF - κ B (usually a p50/p65/RELA heterodimer) binds to the inhibitory protein I κ B and exists in an inactive form in the cytoplasm. When cells are stimulated by LPS, TNF - α, etc., I κ B kinase (IKK, composed of subunits such as IKBKB) is activated, phosphorylating I κ B, leading to its ubiquitination degradation. The released NF - κ B immediately enters the nucleus, initiating the transcription of downstream inflammatory genes such as TNF - α, IL-6, iNOS, COX-2.

   • The function of Shanjinche diol Research has shown that Shanjinche diol can inhibit the activity of IKK (target: IKBKB), thereby preventing the phosphorylation and degradation of I κ B, trapping NF - κ B in the cytoplasm and preventing it from entering the nucleus to perform transcriptional functions. This directly leads to downregulation of pro-inflammatory factors such as TNF - α, IL-6, iNOS (NOS2), and COX-2 (PTGS1/2) expression. In addition, it may directly interact with the p65 (RELA) subunit, inhibiting its binding ability to DNA.

2. Regulating the STAT3 signaling pathway STAT3 (Signal Transduction and Transcription Activation Factor 3) is another transcription factor closely related to inflammation and tumors. When cytokines such as IL-6 bind to their receptors, they activate JAK kinase, which in turn phosphorylates STAT3. Phosphorylated STAT3 forms dimers and enters the nucleus, regulating downstream gene expression.

   • The function of Shanjinche diol Shanjinche diol has been found to inhibit IL-6-induced STAT3 phosphorylation (target: STAT3), thereby blocking the conduction of the STAT3 signaling pathway. This further weakens the pro-inflammatory and pro proliferative effects of IL-6, forming a negative feedback regulation.

3. Adjust TRP channel Transient receptor potential (TRP) channels, especially TRPV1 and TRPA1, are important nociceptors and inflammatory mediator sensors. They play a crucial role in inflammatory pain and neurogenic inflammation. Many natural products exert analgesic and anti-inflammatory effects by regulating these channels.

   • The function of Shanjinche diol Although direct evidence is not yet sufficient, based on the study of its structural analogues (such as lupinol) and molecular docking predictions, it is possible that shanjinche diol regulates its activity by binding to TRPV1 and TRPA1 channels. For example, it may act as an antagonist of TRPV1, inhibiting calcium influx caused by capsaicin or thermal stimulation, thereby reducing pain and inflammation. Alternatively, it may suppress the inflammatory response caused by irritating compounds by desensitizing TRPA1.

4. Inhibition of Caspase-1 and NLRP3 inflammasomes Caspase-1 (CASP1) is a key effector protein of inflammasomes, such as NLRP3 inflammasome. After activation, inflammasomes will cleave pro-IL-1 β and pro-IL-18, causing them to mature and release, triggering a strong inflammatory response.

   • The function of Shanjinche diol Studies have shown that Shanjinche diol can inhibit the assembly and activation of NLRP3 inflammasomes, thereby reducing the activation of Caspase-1 and ultimately decreasing the secretion of mature IL-1 β. This may be another important mechanism of its anti-inflammatory effect.

5. Inhibition of arachidonic acid metabolism Cyclooxygenase (COX, including COX-1/PTGS1 and COX-2/PTGS2) is a key enzyme involved in the metabolism of arachidonic acid to produce prostaglandins (such as PGE2). Prostaglandins are important inflammatory and painful substances.

   • The function of Shanjinche diol Shanjinche diol has been shown to inhibit the expression of COX-2 (via the NF - κ B pathway), thereby reducing the production of PGE2. Its inhibitory effect on COX-1 may be weak, which helps to reduce gastrointestinal side effects.

Summary of Molecular Targets In summary, the anti-inflammatory effect of Shanjinche diol involves multiple key targets, including IKBKB(Inhibiting IKK activity)RELA(Inhibiting NF - κ B activation)STAT3(Inhibiting phosphorylation)TRPV1/TRPA1(Regulating channel activity)CASP1(Inhibiting inflammasomes) and NOS2/PTGS1(Downregulate expression). This multi-target synergistic mode enables it to block the inflammatory cascade reaction from multiple links, demonstrating unique therapeutic advantages.

Evaluation of drug properties and pharmacokinetics

Although Shanjinche diol exhibits encouraging pharmacological activity in vitro and in vivo, its pharmacological properties face severe challenges, mainly due to its extremely poor physicochemical properties and potential pharmacokinetic defects.

1. Drugability assessment：

   • Lipinski's Five Rules The molecular weight of Shanjinche diol (440.7) is less than 500, the hydrogen bond donor (2 hydroxyl groups) is less than 5, and the hydrogen bond acceptor (2 oxygen atoms) is less than 10, which complies with the rules. But its LogP value (6.78) is much greater than 5, seriously violating Lipinski's rule. High LogP means that its water solubility is extremely poor, oral absorption will be very difficult, and it is easy to accumulate in adipose tissue in the body, leading to poor pharmacokinetic behavior.
   • Water solubility The water solubility of 0.0002 mg/mL is the biggest obstacle to the drug formation of Shanjinche diol. Such low water solubility means that even with high oral doses, the amount of medication reaching the systemic circulation is minimal and cannot reach effective therapeutic concentrations.
   • Blood-brain barrier permeability High blood-brain barrier permeability is a double-edged sword. If the target disease is a central nervous system disease, this may be an advantage; But for peripheral inflammation, this may lead to unnecessary neurological side effects such as dizziness, drowsiness, and even neurotoxicity. At present, there is a lack of systematic research on the central toxicity of Shanjinche diol, which is a potential risk point.
   • HERG inhibition HERG (human ether-a-go-go related gene) potassium channel inhibition is the main cause of prolonged QT interval and fatal arrhythmias (such as apical torsion ventricular tachycardia) in the heart. The predicted results show that Shanjinche diol has no hERG inhibitory activity (no), which is a positive signal indicating a low risk of cardiac toxicity.
   • Ames test Ames test is used to predict the mutagenicity (genetic toxicity) of compounds. The Ames test result of Shanjinche diol is 0.0, indicating that it did not exhibit mutagenicity in the bacterial recovery mutation test, which is a favorable indicator of drug efficacy.

2. pharmacokinetics At present, there is very limited systematic research on the pharmacokinetics of Shanjinche diol in vivo, such as the absorption, distribution, metabolism, and excretion (ADME) processes in rats or mice. Based on its physicochemical properties, it can be inferred that its pharmacokinetic characteristics are as follows:

   • absorb Oral absorption is extremely poor and bioavailability is extremely low. Its high LogP and low water solubility make it difficult to dissolve and be absorbed from the gastrointestinal tract. Even if partially absorbed, it may still be heavily metabolized due to first pass effects.
   • distribution Once it enters the bloodstream, due to its high lipophilicity, shan jin che diol will be widely distributed throughout the body tissues, especially adipose tissue and the brain. Its distribution volume (Vd) is expected to be large. High protein binding rates are also possible.
   • Metabolism As a triterpenoid compound, Shanjinche diol is mainly metabolized in the liver by cytochrome P450 enzyme systems (such as CYP3A4). Metabolic reactions may include hydroxylation, oxidation, reduction, and binding reactions with glucuronic acid or sulfuric acid. Its metabolites may have different pharmacological activities or toxicity.
   • excretion Due to its high lipid solubility, shanjinche diol and its metabolites are mainly excreted into the intestine through bile, and some may pass through the enterohepatic circulation, ultimately being excreted with feces. The amount of urine excreted through the kidneys may be minimal.

Improvement strategy Given the above-mentioned drug defects, future research must focus on improving the pharmacokinetic properties of Shanjinche diol. Possible strategies include:
- Structural modification This is the most fundamental solution. For example, introducing water-soluble groups (such as phosphate groups, amino acids, sugar groups, polyethylene glycol chains) on the C-3 or C-28 hydroxyl groups to make prodrugs. The prodrug releases the original drug after enzymatic hydrolysis or hydrolysis in the body, which can significantly improve water solubility and oral bioavailability.
- New drug delivery system Using nanotechnology, such as liposomes, nanoemulsions, solid lipid nanoparticles, polymer micelles, etc., to encapsulate Shanjinche diol. These drug delivery systems can increase their apparent solubility, protect drugs from metabolism, and achieve targeted delivery.
- structural optimization By synthesizing a series of analogues and studying structure-activity relationships (SAR), we aim to identify derivatives with stronger activity and better water solubility. For example, while maintaining the mother core structure, introducing polar groups or changing the position of double bonds.

Clinical application prospects and prospects

Although the pharmacological properties of Shanjinche diol face challenges, its unique pharmacological activity and multi-target mechanism of action still provide broad prospects for its clinical application, especially in the following fields:

1. Inflammatory diseases This is the most direct potential application area for Shanjinche diol.

   • Local anti-inflammatory Given its poor oral bioavailability, local administration (such as topical application on the skin) may be a feasible route. It can be developed into cream, gel or patch for the treatment of eczema, dermatitis, psoriasis and other skin inflammation, as well as local pain and swelling of joints and muscles. Its high lipid solubility is beneficial for penetrating the stratum corneum of the skin and achieving local therapeutic concentrations.
   • chronic inflammation If the oral absorption problem can be solved through structural modification or novel drug delivery systems, Shanjinche diol is expected to be used for the treatment of chronic inflammatory diseases such as rheumatoid arthritis and inflammatory bowel disease (such as Crohn's disease and ulcerative colitis). Its multi-target inhibition of NF - κ B, STAT3, and inflammasomes may give it an advantage over drugs with a single target, such as TNF - α inhibitors, and may reduce the occurrence of drug resistance.

2. Neurodegenerative diseases Its high blood-brain barrier permeability and neuroprotective activity make it a potential candidate drug for treating neurodegenerative diseases such as Alzheimer's disease and Parkinson's disease. The pathogenesis of these diseases involves neuroinflammation, oxidative stress, and abnormal protein aggregation. The anti-inflammatory and antioxidant effects of Shanjinche diol may help delay disease progression. However, its long-term central neurotoxicity must be evaluated first.

3. pain management By regulating TRPV1 and TRPA1 channels, Shanjinche diol may have analgesic effects. It can be developed into a local analgesic agent for the treatment of neuropathic pain (such as post herpetic neuralgia, diabetes peripheral neuropathy) or inflammatory pain.

4. Cancer adjuvant therapy Although its direct anti-tumor activity may not be sufficient to become a first-line anti-cancer drug, its anti-inflammatory properties make it potential as a chemopreventive or adjuvant therapy for cancer. Chronic inflammation is an important cause of various cancers, such as liver cancer and colorectal cancer. By inhibiting the inflammatory microenvironment, Shanjinche diol may delay the occurrence and development of tumors, enhance the efficacy of chemotherapy drugs, and alleviate the inflammatory response caused by chemotherapy.

Future research directions：

1. In depth study of structure-activity relationships Systematically synthesize derivatives of Shanjinche diol, clarify the necessary structural groups for its anti-inflammatory, neuroprotective, and other activities, and provide guidance for structural optimization.
2. Pharmacokinetic optimization Focus on developing water-soluble prodrugs or nano delivery systems, and systematically evaluate their oral bioavailability, tissue distribution, and metabolic characteristics.
3. toxicological evaluation Conduct comprehensive acute, subchronic, and chronic toxicity experiments, particularly evaluating central nervous system toxicity, hepatotoxicity, and nephrotoxicity. This is the key to whether it can enter preclinical research.
4. Target validation Using gene knockout or knockdown techniques, verify the exact contribution of targets such as IKBKB, STAT3, TRPV1 in mediating the pharmacological effects of kaempferol in cell and animal models.
5. Preclinical pharmacodynamic studies Evaluate the efficacy of optimized Shanjinche diol formulations in animal disease models that are closer to clinical settings, such as collagen induced arthritis models and APP/PS1 transgenic Alzheimer's disease mouse models.

Conclusion

Shanjinche diol, as a type of lupine triterpenoid derived from Asteraceae plants, occupies a place in the field of natural product pharmacology due to its unique chemical structure and significant anti-inflammatory activity. Its mechanism of synergistic regulation of inflammatory response through multiple targets and pathways (such as NF - κ B, STAT3, TRP channels, inflammasomes) demonstrates great potential as a novel anti-inflammatory lead compound. However, the low oral bioavailability caused by its extremely poor water solubility and high lipid solubility, as well as potential central nervous system risks, are the two gaps that must be overcome for its clinical application.

Future research should not be limited to a simple description of its pharmacological activity, but should focus on "highlighting strengths and avoiding weaknesses". On the one hand, through structural modification and advanced drug delivery technology, efforts are made to solve the problem of drug formation and turn waste into treasure. On the other hand, further exploration of its structure-activity relationship is needed to find derivatives with stronger activity, lower toxicity, and better pharmacokinetic properties. Meanwhile, a rigorous evaluation of its potential central nervous system toxicity is conducted to ensure medication safety.

In summary, Shanjinche diol is a natural product of great research value. It is not only a modern confirmation of traditional herbal wisdom, but also a cutting-edge topic in modern medicinal chemistry and pharmacology research. Despite the numerous challenges ahead, through interdisciplinary integration and unremitting efforts, Shanjinche diol or its optimized derivatives are expected to provide new options for the treatment of complex diseases such as inflammatory diseases and neurodegenerative diseases in the future, ultimately achieving a magnificent transformation from "natural products" to "clinical drugs".