tert-butyl (R)-2,2-dimethyl-5-((S)-2-methyl-6-((R)-6-methyl-1,4-dioxaspiro[4.5]decan-6-yl)-4-oxohexyl)oxazolidine-3-carboxylate 在
溶剂黄146 作用下,
以
水 为溶剂,
反应 14.0h,
以70%的产率得到tert-butyl (1R,3S,5S)-3-methyl-5-(2-((R)-1-methyl-2-oxocyclohexyl)ethyl)-8-oxa-6-azabicyclo[3.2.1]octane-6-carboxylate