(+)-Epimaritidine, an alkaloid from Zephyranthes rosea

  • Ghosal S
  • Ashutosh
  • Razdan S
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Abstract

The isolation and determination, by spectroscopic analyses and chemical correlation, of the structure and stereochemistry of (+)-epimaritidine, a new alkaloid from Zephyranthes rosea, is reported. A facile transformation of maritidine to (+)-epimaritidine is described and the mechanism is appraised in the light of the thermodynamic stability of the latter epimer. (+)-Epimaritidine comprises a missing link in the C-3 epimeric pairs of 5,10b-ethanophenanthridine alkaloids of the vittatine-haemanthamine type. © 1985.

Author-supplied keywords

  • (+)-epimaritidine
  • 5,10b-ethanophenanthridine alkaloid
  • C-3 epimerization.
  • Zephyranthes rosea, Amaryllidaceae

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Authors

  • Shibnath Ghosal

  • Ashutosh

  • Sushma Razdan

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