Ypsilandrosides C-G, five new spirostanol saponins from Ypsilandra thibetica

Steroids. 2009 Nov;74(12):950-5. doi: 10.1016/j.steroids.2009.07.001. Epub 2009 Jul 10.

Abstract

A further phytochemical investigation on the whole plants of Ypsilandra thibetica yielded one sapogenin and 12 spirostanol saponins. Five of these are new compounds, designated as ypsilandrosides C-G (2-6). Their structures were determined by detailed spectroscopic analysis, including extensive 1D and 2D NMR data, and by the result of a hydrolytic reaction. Compounds 2-5 were rare steroidal saponins that an apiofuranosyl unit was directly linked at C-3 of the aglycone. Selected spirostanol saponins (2-6, 9) were tested for their cytotoxic activities against K562, SPC-A-1, BGC-823, Eca-109, and AGS cell lines. Compounds 6 and 9 showed moderate inhibitory activity against all five cell lines. The antifungal properties of the new spirostanol saponins (2-6) against Candida albicans were also determined.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Antifungal Agents / chemistry
  • Antifungal Agents / isolation & purification
  • Antifungal Agents / pharmacology
  • Antineoplastic Agents / chemistry
  • Antineoplastic Agents / isolation & purification
  • Antineoplastic Agents / pharmacology
  • Candida albicans / drug effects
  • Cell Line, Tumor
  • Humans
  • Magnoliopsida / chemistry*
  • Saponins / chemistry
  • Saponins / isolation & purification*
  • Saponins / pharmacology
  • Spirostans / chemistry*

Substances

  • Antifungal Agents
  • Antineoplastic Agents
  • Saponins
  • Spirostans
  • ypsilandroside C
  • ypsilandroside D
  • ypsilandroside E
  • ypsilandroside F
  • ypsilandroside G