Studies on the C-21 steroids from Asclepiadaceous plants part VII - Bisdesmosidic pregnane glycosides from Caralluma lasiantha

Authors
Qiu, SX Cordell, GA Kumar, BR Rao, YN Ramesh, M Kokate, C Rao, AVNA
Citation
Sx. Qiu et al., Studies on the C-21 steroids from Asclepiadaceous plants part VII - Bisdesmosidic pregnane glycosides from Caralluma lasiantha, PHYTOCHEM, 50(3), 1999, pp. 485-491
Citations number
11
Categorie Soggetti
Agricultural Chemistry","Animal & Plant Sciences
Journal title
PHYTOCHEMISTRY
ISSN journal
00319422 → ACNP
Volume
50
Issue
3
Year of publication
1999
Pages
485 - 491
Database
ISI
SICI code
0031-9422(199902)50:3<485:SOTCSF>2.0.ZU;2-V
Abstract
From the whole plant of Caralluma lasiantha, two new bisdesmosidic C-21 ste roidal (pregnane) glycosides, named as lasianthoside-A and -B, were isolate d and their structures elucidated solely based on extensive 2D-NMR and MS/M S spectral analysis as caralasigenin 3-O-beta-D-glucopyranosyl(1 -->4)-beta -D-digitalopyranoside-20-O-alpha-L-rhamnosyl(1-->6)-beta-D-glucopyranoside and caralumagenin 3-O-beta-D-glucopyranosyl(1-->4)-beta-D-digitalopyranosid e-20-O-alpha-L-rhamnosyl (1-->6)-beta-D-glucopyranoside. In addition, a kno wn flavonoid glycoside, luteolin neohesperidoside, was also isolated. (C) 1 998 Elsevier Science Ltd. All rights reserved.