应用天然产物 ›› 2020, Vol. 10 ›› Issue (1): 13-21.DOI: 10.1007/s13659-019-00228-x
Wen-Lin Yuan1, Xue-Yun Dong1,4, Zheng-Rui Huang3, Si-Jia Xiao1, Ji Ye1, Xin-Hui Tian2, Hui-Liang Li1, Yun-Heng Shen1, Wei-Dong Zhang1,2
Wen-Lin Yuan1, Xue-Yun Dong1,4, Zheng-Rui Huang3, Si-Jia Xiao1, Ji Ye1, Xin-Hui Tian2, Hui-Liang Li1, Yun-Heng Shen1, Wei-Dong Zhang1,2
摘要: Eight new triterpenoids were isolated from Ainsliaea latifolia. The structures of these compounds were elucidated by interpretation of spectroscopic data, including HRESIMS and NMR data. Compounds 4-6 are identified as rare trinorcucurbitane or tetranorcucurbitane triterpenoids. The absolute configurations of compounds 1 and 2 were confirmed by Snatzke's method. All compounds were evaluated for their inhibition against cyclooxyenase-2 (COX-2), in which compound 4 showed significant inhibitory effect against COX-2 with IC50 value of 3.98±0.32 μM, comparable to that of positive control NS-398 (IC50 4.14±0.28 μM).