Four new 9,19-cyclolanostane-type triterpenes （1-4）, were isolated from the rhizomes of Cimicifuga foetida. On the basis of spectroscopic analysis, their chemical structures were elucidated as 1,7-dien-cimigenol-3,1...Four new 9,19-cyclolanostane-type triterpenes （1-4）, were isolated from the rhizomes of Cimicifuga foetida. On the basis of spectroscopic analysis, their chemical structures were elucidated as 1,7-dien-cimigenol-3,12-dione （1）, 1-en-cimigenol-3,11-dione （2）, 11β-hydroxy-7-en-cimigenol-3-one （3）, and （20R,24R）-24,25-epoxy-ll/3-hy- droxy-7-en-9,19-cyclolanost-3,16,23-trione （4）.展开更多
文摘Four new 9,19-cyclolanostane-type triterpenes （1-4）, were isolated from the rhizomes of Cimicifuga foetida. On the basis of spectroscopic analysis, their chemical structures were elucidated as 1,7-dien-cimigenol-3,12-dione （1）, 1-en-cimigenol-3,11-dione （2）, 11β-hydroxy-7-en-cimigenol-3-one （3）, and （20R,24R）-24,25-epoxy-ll/3-hy- droxy-7-en-9,19-cyclolanost-3,16,23-trione （4）.
