Abstract
| - In one step, the skeleton of cis-spirovetivanes wasconstructed with high stereoselectivity by the phosphine-catalyzed [3+2] cycloaddition reaction of tert-butyl 2,3-butadienoate or 2-butynoate with 3-methyl-2-methylenecyclohexanone (5). This method was exemplified by the firsthighly efficient total synthesis of natural product (−)-hinesol,which is an active ingredient of cerebral circulation andmetabolism improvers.
|