791856-35-4Relevant academic research and scientific papers
Tandem annulation strategy for the convergent synthesis of benzonaphthopyranones: total synthesis of chartarin and O-methylhayumicinone
Ray, Sutapa,Patra, Asit,Mal, Dipakranjan
, p. 3253 - 3267 (2008/09/19)
A Hauser-initiated tandem annulation has been developed for the rapid regiospecific synthesis of benzonaphthopyranones via formation of two rings in one-pot operation. This strategy has been generalized with benzonaphthopyranones 26, 29, 32, and 35. It has also been employed in a short synthesis of chartarin (3) and O-methylhayumicinone (67).
Convergent and rapid assembly of benzonaphthopyranone cores of chartreusin, chrymutasins and hayumicins
Mal, Dipakranjan,Patra, Asit,Roy, Haren
, p. 7895 - 7898 (2007/10/03)
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 (22b) and a facile entry to the chrymutasin scaffold (26).
