NEW AND IMPROVED SYNTHESIS OF (±)-4-BROMO-7, 8-DIMETHOXY-ISOCHROMAN-3-ONE, A KEY INTERMEDIATE FOR THE ELABORATION OF (±)-cis- …

DOA Bianchi, TS Kaufman

Index: Bianchi, Dario A.; Kaufman, Teodoro S. Organic Preparations and Procedures International, 2004 , vol. 36, # 2 p. 195 - 199

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Abstract

The Rhoeadine-Papavermbine alkaloids constitutes a small family of natural products, elaborated almost exclusively by the Papaver genus; many of the members of this family have potentially useful biological activity.'In 1982, Ahmad and Snieckus2 reported a convergent entry into the rhoeadan skeleton and a formal total synthesis of (f)-cis- alpinigenine (1) and the related (*)-cis-alpinine (2), using bromolactone 3 as key ...