methyl (1R,2S,5S)-3-[(2S)-2-[[(2S)-3,3-dimethyl-1-(5-methyl-1,1-dioxo-1,2,5-thiadiazolidin-2-yl)butan-2-yl]carbamoylamino]-3,3-dimethylbutanoyl]-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylate 在
lithium hydroxide 、
水 、
盐酸 作用下,
以
1,4-二氧六环 、
水 为溶剂,
以90%的产率得到(1R,2S,5S)-3-[(2S)-2-[[(2S)-3,3-dimethyl-1-(5-methyl-1,1-dioxo-1,2,5-thiadiazolidin-2-yl)butan-2-yl]carbamoylamino]-3,3-dimethylbutanoyl]-6,6-dimethyl-3-azabicyclo[3.1.0]hexane-2-carboxylic acid