反应详情

The procedure of (1-5) of Example 1 was repeated except for using 414 mg of (2S)-pyrrolidine-1,2-dicarboxylic acid-1-t-butylester instead of 2-t-butoxycarbonylamino-ethanoic acid and 368 mg of the compound obtained in (145-2) to obtain the title compound (200 mg, 35%).