Total Synthesis of Himachalene Sesquiterpenes of<i>Aphthona</i>and<i>Phyllotreta</i>Flea Beetles
作者:Robert J. Bartelt、David Weisleder、Frank A. Momany
DOI:10.1055/s-2003-36253
日期:——
A totalsynthesis is presented for himachalene-related norsesquiterpene ketone 1 (racemic), based on the Robinson annulation and other standard reactions. The route involved five steps from cycloheptanone. A favorable result was that the desired diastereomer of 1 was obtained preferentially (97:3) over the unwanted one. Molecular modeling (ab initio calculations) aided in confirming the assignment