((S)-1-Allyl-6-but-3-enyl-6-butylcarbamoyl-2-oxo-piperidin-3-yl)-carbamic acid tert-butyl ester 在
Grubbs catalyst first generation 作用下,
以81%的产率得到((S)-10a-Butylcarbamoyl-4-oxo-1,2,3,4,6,9,10,10a-octahydro-pyrido[1,2-a]azepin-3-yl)-carbamic acid tert-butyl ester