New steroidal alkaloids from Sarcococca saligna

J Nat Prod. 2000 Oct;63(10):1364-8. doi: 10.1021/np990108w.

Abstract

Five new pregnane-type steroidal alkaloids (1-5) have been isolated from Sarcococca saligna. A combination of UV, IR, MS, and 1D and 2D NMR spectroscopic studies established their structures as salignarine A [(20S)-2beta-hydroxy-4beta-acetoxy-5alpha, 6alpha-epoxy-20-(dimethylamino)-3beta-(tigloylamino)pregnane ] (1), salignarine B [(20S)-2beta-hydroxy-20-(dimethylamino)-3beta-(tigloylamino) -pregn-5- ene] (2), salignarine C [(20S)-2beta-hydroxy-20-(dimethylamino)-3beta-(senecioylamino++ +)-pregn- 5-ene] (3), salignarine D [(20S)-20-(dimethylamino)-3beta-(senecioylamino)-5alpha-preg n-16-ene] (4), and salignarine E [(20S)-20-(dimethylamino)-3beta-(tigloylamino)-pregn-4-ene] (5), respectively.

MeSH terms

  • Alkaloids / chemistry
  • Alkaloids / isolation & purification*
  • Magnetic Resonance Spectroscopy
  • Magnoliopsida / chemistry*
  • Pakistan
  • Phytosterols / chemistry
  • Phytosterols / isolation & purification*

Substances

  • Alkaloids
  • Phytosterols