(R)-2-cyclohexylmethyl-4-morpholin-4-yl-4-oxo-butyric acid 、 (S)-2-amino-1-(5-trifluoromethyl-1,2,4-oxadiazol-3-yl)-butan-1-ol trifluoroacetate 、
O-(7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate 在
盐酸 、
羟基甲酸酯 、
水 、
Sodium sulfate-III 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
反应 16.0h,
以to give (R)-2-Cyclohexylmethyl-N-{(S)-1-[hydroxy-(5-trifluoromethyl-1,2,4-oxadiazol-3-yl)-methyl]-propyl}-4-morpholin-4-yl-4-oxo-butyramide as a yellow solid (324 mg)的产率得到(R)-2-Cyclohexylmethyl-N-{(S)-1-[hydroxy-(5-trifluoromethyl-1,2,4-oxadiazol-3-yl)-methyl]-propyl}-4-morpholin-4-yl-4-oxo-butyramide