[GRAPHICS]The total synthesis of racemic clavubicyclone ( 1), which was isolated from Okinawan soft coral by our group, is described. The bicyclo[3.2.1]-octane skeleton was prepared by Cope rearrangement of a divinylcyclopropane derivative. Three functional groups on the skeleton were constructed by Barton decarboxylation, Wittig reaction, and alkylation.
[GRAPHICS]The total synthesis of racemic clavubicyclone ( 1), which was isolated from Okinawan soft coral by our group, is described. The bicyclo[3.2.1]-octane skeleton was prepared by Cope rearrangement of a divinylcyclopropane derivative. Three functional groups on the skeleton were constructed by Barton decarboxylation, Wittig reaction, and alkylation.