Prehispanolone Analogs: Stereochemistry Control at C-5 in the Preparation of 1-Oxaspiro[4,5]decane Fused Systems and Related Compounds
作者:Pilar Basabe、Antonio Estrella、Isidro S. Marcos、David Díez、Anna M. Lithgow、A. J. P. White、David J. Williams、Julio G. Urones
DOI:10.1055/s-2001-9723
日期:——
A new strategy for acid-catalyzed intramolecular epoxide ring-opening is described for preparing grindelic acid derivatives. Proper functionalization of ring B allows stereochemical control for the epoxide and spiran carbons. The carbonyl group at C-7 allows the control of C-8 in the synthesis of prehispanolone analogues.