反应详情

A procedure similar to that described in Example 9(a) was repeated, except that 152 mg of (2S, 4S, 5S)- 5-(t-butoxycarbonylamino)-6-cyclohexyl-4-hydroxy-2-(1-hydroxy-1-methylethyl)-N,N-dimethylhexanamide (prepared as described in Preparation 25) were used instead of the (2S, 4S, 5S)-5-(t-butoxycarbonylamino)-6-cyclohexyl-4-hydroxy-2-(1-hydroxy-1-methylethyl)-N-methylhexanamide, and that 109 mg (0.4 mmoles) of N-(t-butoxycarbonyl)-3-(4-thiazolyl)-L-alanine, 0.23 ml (1.66 mmoles) of triethylamine, and 0.064 ml (0.4 mmoles) of diethyl cyanophosphate were also used, to obtain 150 mg of the title compound as a white amorphous substance.