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Two New C 21 Steroidal Glycosides from the Stems of Cynanchum paniculatum Kitag.
Author(s) -
Huang Xin,
Tan AiMin,
Yang ShiBao,
Zhang AnYuan,
Zhang Hua
Publication year - 2009
Publication title -
helvetica chimica acta
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.74
H-Index - 82
eISSN - 1522-2675
pISSN - 0018-019X
DOI - 10.1002/hlca.200800314
Subject(s) - chemistry , glycoside , stereochemistry
Two new glycosides, (3 β ,8 β ,9 α ,16 α ,17 α )‐14,16 β : 15,20 α :18,20 β ‐triepoxy‐16 α ,17 α ‐dihydroxy‐14‐oxo‐13,14 : 14,15‐disecopregna‐5,13(18)‐dien‐3‐yl α ‐cymaropyranosyl‐(1→4)‐ α ‐digitoxopyranosyl‐(1→4)‐ α ‐oleandropyranoside ( 1 ) and (3 β ,8 β ,9 α ,16 α ,17 α )‐14,16 β : 15,20 α : 18,20 β ‐triepoxy‐16 β : 17 α ‐dihydroxy‐14‐oxo‐13,14 : 14,15‐disecopregna‐5,13(18)‐dien‐3‐yl α ‐oleandropyranosyl‐(1→4)‐ α ‐digitoxopyranosyl‐(1→4)‐ α ‐oleandropyranoside ( 2 ) were isolated from the stems of Cynanchum paniculatum ( Bunge ) Kitag . The structures of the new compounds were elucidated by means of spectral data, including HR‐ESI‐MS, and 1D‐, and 2D‐NMR.