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- Title
Steroidal Saponins from <i>Polygonatum cyrtonema</i>.
- Authors
Ma, Ke; Huang, Xuefeng; Kong, Lingyi
- Abstract
A study of the rhizomes of Polygonatum cyrtonema led to the isolation of three pairs of mixtures of 25 R and 25 S stereoisomeric spirostanol saponins: (25 R, 25 S) spirostan-5-en-12-one-3- O-β-D-glucopyranosyl-(1 → 2)- O-[β-D-glucopyranosyl-(1 → 3)]- O-β-D-glucopyranosyl-(1 → 4)-β-D-galactopyranoside ( 1a, 1b), (25 R, 25 S) spirostan-5-en-12-one-3- O-D-glucopyranosyl-(1 → 2)- O-[β-D-xylopyranosyl(1 → 3)]-O-β-Dglucopyranosyl(1 → 4)-β-D-galactopyranoside( 2a, 2b), and (25 R, 25 S)-3-β-hydroxyspirost-5-en-12-one ( 3a, 3b). Compound 1a is a new spirostanol saponin named cyrtonemoside A. The structures were determined by spectroscopic methods, mainly 1D and 2D NMR.
- Subjects
STEROID saponins; SOLOMON'S seal; GLUCOPYRANOSE; SPECTRUM analysis; SPIROSTAN
- Publication
Chemistry of Natural Compounds, 2013, Vol 49, Issue 5, p888
- ISSN
0009-3130
- Publication type
Article
- DOI
10.1007/s10600-013-0770-2