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Cycloartane-type triterpenoids from Sphaerophysa salsula

2004; Taylor & Francis; Volume: 6; Issue: 4 Linguagem: Inglês

10.1080/1028602031000147438

1477-2213

Zhongjun Ma, Xian Li, Jinhui Wang, Yang Lü, Wei Li, Qi‐Tai Zheng, Cheng Wang, Yuxia Wang, Isao Fujii, Yutaka Ebizuka,

Sesquiterpenes and Asteraceae Studies

Four novel cycloartanes, named sphaerophysone A (1), B (2), C (3) and D (4), were isolated from the ethanol extract of Sphaerophysa salsula (Pall.) DC. The structures were elucidated on the basis of spectral evidence, and the stereochemistry of compound 1 was defined by X-ray crystallographic analysis. Sphaerophysone B (2) may be an artifact formed in the isolation procedure.