Short and regiospecific synthesis of echinamine A--the pigment of sea urchin Scaphechinus mirabilis

Nat Prod Commun. 2011 Feb;6(2):217-22.

Abstract

New convenient two-step synthesis of natural pigment echinamine A by the condensation of 2,3-dichloro-6-ethyl-7-hydroxy-1,4-naphthoquinone with sodium nitrite and subsequent reduction of intermediate 7-ethyl-2,5,6,8-tetrahydroxy-3-nitro-1,4-naphthoquinone has been developed.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Naphthoquinones / chemical synthesis*
  • Pigments, Biological / chemical synthesis*
  • Sea Urchins / chemistry*

Substances

  • Naphthoquinones
  • Pigments, Biological
  • echinamine A