Catalytic Activity Studies of Aminocarbonyl Group Containing Hoveyda-Grubbs-Type Complexes for the Syntheses of Herbarumin I and Stagonolide A
Résumé
The catalytic activity of four aminocarbonyl group containing 'boomerang'-type ring-closing metathesis catalysts have been studied for ten-membered lactone and compared well with the Grubbs I and II as well as the Hoveyda-Grubbs catalysts. The activity was found to be superior to the above three ring-closing metathesis catalysts and suggesting novel stereoselective total syntheses of herbarumin I and stagonolide A.