Novel stereocontrolled synthesis of the tricyclic lactone (1R,3R,6R,9S)-6,9-dimethyl-8-oxo-7-oxatricyclo[4.3.0.03,9]nonane
作者:Rosario Rico、Julián Zapico、Francisco Bermejo、S.Bamidele Sanni、Santiago Garcı́a-Granda
DOI:10.1016/s0957-4166(97)00641-1
日期:1998.1
The stereocontrolled synthesis of (1R,3R,6R,9S)-6,9-dimethyl-s-oxo-7-oxatricyclo[4.3.0.0(3,9)]nonane 1 from (R)-(-)-carvone has been accomplished by application of a 13-step sequence with 12% overall yield. The absolute stereochemistry of the unsaturated acid 8a has been established by X-ray analysis of the chiral amide 8c. (C) 1998 Elsevier Science Ltd. All rights reserved.