Convergent and rapid assembly of benzonaphthopyranone cores of chartreusin, chrymutasins and hayumicins

D Mal, A Patra, H Roy

Index: Mal, Dipakranjan; Patra, Asit; Roy, Haren Tetrahedron Letters, 2004 , vol. 45, # 42 p. 7895 - 7898

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Citation Number: 19

Abstract

A new methodology for the rapid regiospecific synthesis of benzonaphthopyranones has been developed, on the basis of a tactical extension of the Hauser–Kraus annulation. The prowess of the methodology has been illustrated by a short synthesis of chartarin () and a facile entry to the chrymutasin scaffold ().