tert-butyl (2S,5R,6R,8S)-6,8-dimethyl-2-[(2S,4R)-4-methyl-6-oxooxan-2-yl]-3-oxo-1-oxa-10-azaspiro[4.5]decane-10-carboxylate 在
L-Selectride 作用下,
以
四氢呋喃 为溶剂,
反应 0.33h,
以84%的产率得到(2R,3S,5R,8S,10R)-3-Hydroxy-8,10-dimethyl-2-((2S,4R)-4-methyl-6-oxo-tetrahydro-pyran-2-yl)-1-oxa-6-aza-spiro[4.5]decane-6-carboxylic acid tert-butyl ester