(2S,3S,4S,5S,6R,9S,11S)-2-[(2S,3S)-2-(tert-Butyl-dimethyl-silanyloxy)-3-methyl-pent-4-enyl]-9-ethyl-3,5,11-trimethyl-4-triethylsilanyloxy-1-oxa-7-aza-spiro[5.5]undecan-8-one 在
臭氧 、
三苯基膦 作用下,
以
二氯甲烷 为溶剂,
反应 12.0h,
以92%的产率得到(2R,3S)-3-(tert-Butyl-dimethyl-silanyloxy)-4-((2S,3S,4S,5S,6R,9S,11S)-9-ethyl-3,5,11-trimethyl-8-oxo-4-triethylsilanyloxy-1-oxa-7-aza-spiro[5.5]undec-2-yl)-2-methyl-butyraldehyde