we describe a convenient and general method for the preparation of 2,3-dihydro-2-niuo-3-phenyl-4H-furo[3,2-c][l]~~opy~-4-ones from cl-hydroxycoumarin and (2-chloro-2-nitroethenyl)benzenes in the presence of potassium fluoride. Using the same starting materials and by replacing potassium fluoride wit
A synthon for C-20 trideuterated eicosanoids: Preparation of [2H3]-arachidonic acid
✍ Scribed by Chandra Prakash; Samir Saleh; Brian J. Sweetman; Douglass F. Taber; Ian A. Blair
- Publisher
- John Wiley and Sons
- Year
- 1989
- Tongue
- French
- Weight
- 627 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0022-2135
No coin nor oath required. For personal study only.
✦ Synopsis
Starting from hex-5-yn-1-01 an efficient seven step synthesis of (Z)9-2H, triphenylphosphonium bromide is described. This Wittig reagent is a key intermediate for the synthesis of C-20 trideuterated eicosanoids. Introduction of deuterium at C-20 provides standards that are stable to a wide range of reagents and reaction conditions. The utility of the Wittig synthon was demonstrated by the preparation of C-20 trideutcrated arachidonic acid.
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## Abstract 3,4‐Dichloro‐2(5__H__)‐furanone, which has been prepared efficiently from mucochloric acid, has been transformed selectively into 4‐aryl‐3‐chloro‐2(5__H__)‐furanones either by Suzuki‐ or Stille‐type reactions. These monochloro derivatives have been used as precursors either to (__Z__)‐4