Triterpenoid saponins from Pterocephalus hookeri.

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作者信息

Tian J, Wu F E, Qiu M H, Nie R L

机构信息

Chengdu Institute of Biology, Academia Sinica, China.

出版信息

Phytochemistry. 1993 Apr;32(6):1535-8. doi: 10.1016/0031-9422(93)85174-p.

DOI:10.1016/0031-9422(93)85174-p

PMID:7763555

Abstract

Four new triterpenoid saponins, named hookerosides A-D, were isolated from Pterocephalus hookeri. Based on chemical and spectral evidence, their structures were determined as 3-O-beta-D-glucopyranosyl(1-->4)-beta-D-xylopyranosyl(1-->3)-alpha-L- Rhamnopyranosyl(1-->2)-beta-D-xylopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranoside, 3-O-beta-D-xylopyranosyl(1-->4)-beta-D-glucopyranosyl(1-->4)-beta-D- xylopyranosyl(1-->3)-alpha-L-rhamnopyranosyl(1-->2)-beta-D-xylopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl(1-->6)-beta-D-glucopyranoside, 3-O-alpha-L-rhamnopyranosyl(1-->2)-beta-D-xylopyranosyl(1-->4)-beta-D- glucopyranosyl(1-->4)-beta-D-xylopyranosyl(1-->3)-alpha-L-rhamnopyranosy l(1-->2 ) beta-D-xylopyranosyl oleanolic acid 28-O-beta-D-glucopyranosyl(1-->6)-beta-glucopyranoside and oleanolic acid 3-O-alpha-L-rhamnopyranosyl(1-->2)-beta-D- xylopyranosyl(1-->4)-beta-D-glucopyranosyl(1-->4)-beta-D-xylopyranosyl(1 -->3)- alpha-L-rhamnopyranosyl(1-->2)-beta-D-xylopyranoside, respectively.

摘要