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DITERPENOIDS FROM SIEGESBECKIA-PUBESCENS
被引:62
|作者:
JIANG, X
MA, YB
XU, YL
机构:
[1] The Laboratory of Phytochemistry, Kunming Institute of Botany, Academia Sinica, Kunming
关键词:
SIEGESBECKIA-PUBESCENS;
COMPOSITAE;
XI-XIAN;
ENT-KAURANE-TYPE DITERPENOIDS;
SIEGESBECKIOSIDE;
SIEGESBECKIOL;
SIEGESBECKI ACID;
D O I:
10.1016/0031-9422(92)80039-H
中图分类号:
Q5 [生物化学];
Q7 [分子生物学];
学科分类号:
071010 ;
081704 ;
摘要:
Three new ent-kaurane-type diterpenoids, siegesbeckioside, siegesbeckiol and siegesbeckic acid, were isolated together with five known diterpenes from Siegesbeckia pubescens (Xi-Xian). On the basis of chemical and spectral evidences, their structures were elucidated as.ent-16-beta,17,18-trihydroxy-kauran 18-O-beta-D-glucopyranoside, ent-kauran-2-alpha,16-beta,17-triol, ent-16-alpha-H,17,18-dihydroxy-kauran-19-oic acid, ent-kauran-16-beta,17,18-triol, ent-16-beta,17-dihydroxy-kauran-19-oic acid, ent-16-alpha-H,17-hydroxy-kauran-19-oic acid, grandifloric acid and kirenol, respectively.
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页码:917 / 921
页数:5
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