Isolation and structure determination of cypritibetquinone A and B, two new phenanthraquinones from Cypripedium tibeticum
- VernacularTitle:西藏杓兰中两个新菲醌类化合物的分离与结构鉴定
- Author:
Dong LIU
;
Jianhua JU
;
Zhongjie ZOU
;
Geng LIN
;
Junshan YANG
- Publication Type:Journal Article
- Keywords:
Cypripedium tibeticum;
cypritibetquinone A;
cypritibetquinone B;
phenanthraquinones
- From:
Acta Pharmaceutica Sinica
2005;40(3):255-257
- CountryChina
- Language:Chinese
-
Abstract:
Aim To study the chemical constituents of Cypripedium tibeticum. Methods Compounds were isolated by repeated silica gel chromatography and purified on Sephadex LH-20 and structures were determined by spectral analysis. Results Cypritibetquinones A and B were isolated from the ethyl acetate residue and their structures were determined as 7-hydroxy-2-methoxy-1, 4-phenanthraquinone ( 1 ) and 7-hydroxy-2,10-dimethoxy-1,4-phenanthraquinone ( 2 ), respectively, by extensive spectral analyses. Conclusion Cypritibetquinones A and B are two new phenanthraquinones.
