Studies on saponins from seeds of Trigonella foenum-graecum Ⅲ. Isolation and structural elucidation for a new saponin D
- VernacularTitle:胡芦巴中皂苷成分的研究Ⅲ.新皂苷D的分离纯化及化学结构测定
- Author:
Xuemin XU
;
Jia WANG
;
Hong YANG
;
Weiping HUANG
;
Chongjun YUAN
- Publication Type:Journal Article
- Keywords:
Huluba (the seed of Trigonella foenum-graecum L.);
saponin D;
diosgenin
- From:
Chinese Traditional and Herbal Drugs
1994;0(06):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the saponins from the Chinese materia medica Huluba (the seeds of Trigonella foenum-graecum L.). Methods To isolate and purify the single saponin by the column chromatography and dry column chromatography of silica gel H. The structural elucidation was carried on by spectroscopic evidence of (()~(13)C-NMR), FAB-MS, DEPT and the results of the fraction-hydrolysis of acquiring the secondary glucosides. Results The newly isolated saponin D was consisted by six molecules of sugar with diosgenin. The chemical structure of saponin D is: diosgenin-3-O-?-L-rhamnopyranosyl (1→3)-?-D-glucopyranosyl (1→4)-?-L-rhamnopyranosyl [(1→3)-?-L-rhamnopyranosyl] (1→4)-?-D-glucopyranosyl (1→4)-?-D-glucopyranoside. Conclusion Saponin D is a new one consisted of six molecules of su-(gar) with diosgenin.
