Storage conditions：Short-term storage at 2~8℃, long-term storage at -20 ~ -80℃
Neotriptophenolide (CAS No.: 81827-74-9) is a natural sesquiterpene pyridine alkaloid isolated from the root bark of Tripterygium wilfordii, a traditional Chinese medicine. As a traditional Chinese medicinal herb, Lycidia has been widely studied for its remarkable anti-inflammation, immunomodulatory, and antitumor activities. As one of the important active components in Tripterygium, neotitonolide has recently become a research hotspot in the field of natural product pharmacology due to its unique chemical structure and multi-target pharmacological effects. This paper systematically reviews the chemical structure and physicochemical properties of neomotonolide, plant origin and extraction methods, pharmacological activity and mechanism of action, druggability evaluation, and clinical application prospects, aiming to provide a theoretical foundation and research direction for its subsequent drug development and clinical application.
Neoleiphenolide is a tetracyclic triterpenoid compound with a molecular formula of C21H26O4 and a molecular weight of 342.4350. Its structural features include phenolic compounds, aromatic ethers, γ-lactones, and an organic heterotetracyclic framework, demonstrating high structural complexity and diversity. The LogP value of neoretonolide was 4.5192, indicating strong lipid solubility, which facilitates penetration of cell membranes and the blood-brain barrier (BBB has high permeability). Its topological polarity surface area (TPSA) is 55.76 Ų, and moderate polarity helps its bioavailability and distribution in vivo. Low water solubility (0.0241 mg/mL) suggests limited solubility in the aqueous phase, which may affect oral absorption and formulation development. The hERG channel inhibition test was negative, indicating a low cardiotoxicity risk, and the Ames mutagenic test result was 0.0, indicating low genotoxicity risk and good druggability.
Neolytonolide is mainly isolated from the root bark of Tripterygium triglycol. Plants of the Trichophyllum genus are distributed in southern China and Southeast Asia, and their root bark is rich in active components of sesquiterpenes and triterpenes. Traditional extraction methods mostly use organic solvents (such as ethanol, methanol, or ethyl acetate) for extraction combined with column chromatography, thin-layer chromatography (TLC), high-performance liquid chromatography (HPLC), and other separation and purification techniques, ultimately obtaining high-purity neo-piccololide. In recent years, new green extraction technologies such as ultrasound-assisted extraction, microwave-assisted extraction, and supercritical fluid extraction have also been applied to extract active components from Trigonopterygium, improving extraction efficiency and purity while reducing the use of harmful solvents.
Neotitonolide exhibits significant anti-proliferative and apoptotic effects across various tumor cell lines. In vitro experiments show that it can inhibit the proliferation of various cancer cells (such as breast cancer, lung cancer, liver cancer, colorectal cancer, etc.), induce cell cycle arrest, and apoptosis. In vivo animal model studies have also confirmed its potential to inhibit tumor growth and metastasis. Its antitumor activity is closely related to the regulation of multiple signaling pathways.
Tritonia and its active ingredients are widely used in immunomodulatory fields. Neotitonolide demonstrates good anti-inflammatory effects by modulating immune cell function and inhibiting the release of inflammatory factors. It can reduce the expression of pro-inflammatory cytokines (such as TNF-α, IL-6, etc.), alleviate inflammatory responses, and has potential therapeutic value for autoimmune diseases.
Given the good blood-brain barrier penetration of neotitonolide, some studies have explored its application in neurodegenerative diseases. Preliminary data suggest that it may protect nerve cells through antioxidant and anti-inflammatory mechanisms, but related research is still in its early stages.
The pharmacological effects of neotitonolide involve various molecular targets and signaling pathways, mainly including:
In summary, neotitonolide demonstrates a complex and effective anti-tumor mechanism through multi-target and multi-pathway synergistic effects.
The druggability parameters of neotifollide indicate that it has promising potential for drug development. Its molecular weight of 342.4350 complies with the Lipinski rule, and although the LogP value of 4.5192 is relatively high, it remains within an acceptable range, indicating good lipid solubility, which is beneficial for cell membrane penetration and oral absorption. TPSA is 55.76 Ų, suitable for crossing cell membranes and the blood-brain barrier. Low water solubility may limit oral bioavailability, requiring formulation optimization to improve solubility and stability.
In terms of toxicological evaluation, neotifollide did not inhibit the hERG channel, reducing the risk of cardiotoxicity; The Ames test was negative, indicating no significant genotoxicity. In addition, preliminary pharmacokinetic studies show that it is widely distributed in the body, especially at high concentrations in the central nervous system, which matches the high permeability of the blood-brain barrier. The metabolic pathway is not yet fully understood; it is presumed to be mainly metabolized via the hepatic CYP450 enzyme system. Future studies are needed to systematically study its metabolic kinetics and potential drug interactions.
Given the multiple activities of neomotonolide in anti-tumor, anti-inflammatory, and immunomodulatory aspects, its clinical application prospects are broad. Currently, Trimopticarpus and its extracts have demonstrated efficacy in autoimmune diseases such as rheumatoid arthritis and systemic lupus erythematosus. As the main active ingredient, neo-astonolide is expected to become a candidate molecule for next-generation anti-tumor and immunomodulatory drugs.
Future research should focus on:
In addition, combining modern drug design with synthetic biology technologies to develop derivatives and analogs of neonatonolide to further enhance its efficacy and selectivity is also an important direction for the future.
As an important natural active ingredient in Trifolium trifolio, new remnant lactone demonstrates broad application potential in antitumor and immunomodulatory fields due to its unique tetracyclic triterpene framework structure and multi-target pharmacological activity. Its excellent druggability parameters and low toxicity risk have laid a solid foundation for its drug development. Although research on its mechanism of action and clinical application is still in its early stages, with advances in modern pharmacology and medicinal chemistry, neotiphenolide is expected to become an important breakthrough in the development of natural product drugs. Future multidisciplinary collaboration will accelerate the transition from the laboratory to clinical practice, benefiting more patients.
