Abstract:
:Three new triterpene saponins, ilekudinosides T-V (1-3), along with six known saponins were isolated from the 70% ethanolic extract of the leaves of Ilex kudingcha. The new saponins were characterized as 3-O-beta-d-glucopyranosyl-(1 --> 3)-[alpha-l-rhamnopyranosyl-(1 --> 2)]-alpha-l-arabinopyranosyl-3beta,19alpha-dihydroxy-urs-12(13)-en-28,20beta-lactone (1), 3-O-beta-d-glucopyranosyl-(1 --> 3)-[alpha-l-rhamnopyranosyl-(1 --> 2)]-alpha-l-arabinopyranosyl-3beta,19alpha-dihydroxy-12-ethoxy-urs-13(18)-ene-28,20beta-lactone (2), 3-O-beta-d-glucopyranosyl-(1 --> 3)-[alpha-l-rhamnopyranosyl-(1 --> 2)]-alpha-l-arabinopyranosyl-3beta,19alpha-dihydroxy-11-oxo-urs-13(18)-ene-28,20beta-lactone (3), respectively. The structures of compounds 1-3 were elucidated on the basis of the chemical and spectroscopic evidence, and the structures of known compounds were identified by comparison of their spectroscopic data with those reported in the literature.
journal_name
J Asian Nat Prod Resjournal_title
Journal of Asian natural products researchauthors
Tang L,Jiang Y,Tian XM,Zhou SX,Tu PFdoi
10.1080/10286020902937491subject
Has Abstractpub_date
2009-06-01 00:00:00pages
554-61issue
6eissn
1028-6020issn
1477-2213pii
912061654journal_volume
11pub_type
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