Cycloartane-type glycosides from Astragalus amblolepis
Küçük Resim Yok
Tarih
2009
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
Five cycloartane-type triterpene glycosides were isolated from the methanol extract of the roots of Astragalus amblolepis Fischer along with one known saponin, 3-O-beta-D-xylopyranosyl-16-O-beta-D-glucopyranosyl-3 beta,6 alpha,16 beta,24(S),25-pentahydroxy-cycloartane. Structures of the compounds were established as 3-O-beta-D-xylopyranosyl-25-O-beta-D-glucopyranosyl-3 beta,6 alpha,16 beta,24(S),25-pentahydroxy-cycloartane, 3-O-[beta-D-glucuronopyranosyl-(1 -> 2)-beta-D-xylopyranosyl]-25-O-beta-D-glucopyranosyl-3 beta,6 alpha, 16 beta,24(S),25-pentahydroxy-cycloartane, 3-O-beta-D-xylopyranosyl-24,25-di-O-beta-D-glucopyranosyl-3 beta,6 alpha,16 beta,24(S),25-pentahydroxy-cycloartane, 6-O-alpha-L-rhamnopyranosyl-16,24-di-O-beta-D-glucopyranosyl-3 beta, 6 alpha,16 beta,24(S),25-pentahydroxy-cycloartane, 6-O-alpha-L-rhamnopyranosyl-16,25-di-O-beta-D-glucopyranosyl-3 beta,6 alpha, 16 beta,24(S),25-pentahydroxy-cycloartane by using 1D and 2D-NMR techniques and mass spectrometry. To the best of our knowledge, the glucuronic acid moiety in cycloartanes is reported for the first time. (C) 2009 Elsevier Ltd. All rights reserved.
Açıklama
Anahtar Kelimeler
Astragalus amblolepis, Leguminosae, Cycloartane, Glucuronic acid, Saponin
Kaynak
Phytochemistry
WoS Q Değeri
Q1
Scopus Q Değeri
Q1
Cilt
70
Sayı
5
