(2S,4S)-4-(4-methoxybenzylthio)-1-(4-nitrobenzyloxycarbonyl)-2-pyrrolidinecarboxylic acid 、 、
2-(4-Nitrobenzyloxycarbonyl)-1-(4-nitrobenzyloxycarbonyl)piperazine 以270 mg of the title compound were obtained as an amorphous solid的产率得到(2S,4S)-4-Mercapto-2-[3-(4-nitrobenzyloxycarbonyl)-4-(4-nitrobenzyloxycarbonyl)-1-piperazinylcarbonyl]-1-(4-nitrobenzyloxycarbonyl)pyrrolidine