natural friedelane triterpenoid, can disrupt the Hsp90–Cdc37 interaction to provide antitumor effects. In this study, 31 new celastrol derivatives, 2a–2d, 3a–3g, and 4a–4t, were designed and synthesized, and their Hsp90–Cdc37 disruption activities and antiproliferative activities against cancer cells were evaluated. Among these compounds, 4f, with the highest tumor cell selectivity (15.4-fold), potent
A series of 3-carbamate and 29-ester celastrol derivatives (compounds 1–26) were designed and synthesized. These analogues were evaluated for their cytotoxic activities against several cancer cell lines. Cytotoxicity data revealed that the properties of substituents and substitution position had important influence on cytotoxic activity. Modification of C-3 hydroxyl with size-limited groups did not
attention in the last decade. The Hsp90 multichaperone complex has important roles in the growth and/or survival of cancer cells. Cdc37, as a cochaperone, associates kinase clients to Hsp90 and promotes the development of malignant tumors. Disrupting the Hsp90–Cdc37 interaction provides an alternative strategy to inhibit the function of Hsp90 for cancer therapy. Celastrol, as a natural product, can disrupt
Synthesis of celastrol derivatives as potential non‐nucleoside hepatitis B virus inhibitors
作者:He Zhang、Gongxi Lu
DOI:10.1111/cbdd.13746
日期:2020.12
A series of para‐quinone methide (p QM) moiety and C‐20‐ modified derivatives of celastrol were synthesized and evaluated for their inhibitory effect on the secretion of HBsAg and HBeAg as well as the inhibitory effect against HBV DNA replication. The results suggested that amidation of C‐20 carboxylic group could generate derivatives with good anti‐HBV profile, among them compound 14 showed the best
Synthesis and Biological Evaluation of Celastrol Derivatives as Potential Immunosuppressive Agents
作者:Qi-Wei He、Jia-Hao Feng、Xiao-Long Hu、Huan Long、Xue-Feng Huang、Zhen-Zhou Jiang、Xiao-Qi Zhang、Wen-Cai Ye、Hao Wang
DOI:10.1021/acs.jnatprod.0c00067
日期:2020.9.25
a friedelane-type triterpenoid isolated from the genus Triperygium, possesses antitumor, anti-inflammatory, and immunosuppressive activities. A total of 42 celastrol derivatives (1a–1t, 2a–2l, and 3a–3j) were synthesized and evaluated for their immunosuppressive activities. Compounds 2a–2e showed immunosuppressive effects, with IC50 values ranging from 25 to 83 nM, and weak cytotoxicity (CC50 > 1 μM)