Seven new steroidal glycosides from the roots of Cynanchum forrestii

Steroids. 2007 Apr;72(4):313-22. doi: 10.1016/j.steroids.2006.11.024. Epub 2007 Feb 14.

Abstract

Seven new steroidal glycosides, cynaforrosides K (1), L (2), M (3), N (4), and Q (7), based on a 13,14:14,15-disecopregnane-type aglycone, and cynaforrosides O (5) and P (6) with a 14,15-secopregnane-type aglycone, were isolated from the 95% ethanol extract of the roots of Cynanchum forrestii Schlechter. The structures of new compounds were determined on the basis of spectroscopic and chemical evidence. The sugar units of cynaforrosides K-P contained two moieties of glucoses with the mode of 1-->4 linkage and those of cynaforrosides K-O contained six moieties of sugars.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Carbohydrate Sequence
  • Cynanchum / chemistry*
  • Glycosides / chemistry*
  • Glycosides / isolation & purification
  • Molecular Sequence Data
  • Molecular Structure
  • Plant Roots / chemistry
  • Steroids / chemistry*
  • Steroids / isolation & purification

Substances

  • Glycosides
  • Steroids