(2R)-2-amino-4-methyl-N-[2-oxo-8-(2-oxopyrrolidin-1-yl)-1-(thiophen-3-ylmethyl)-1,2,3,4-tetrahydroquinolin-3-yl]pentanamide 、
N-叔丁氧羰基-L-丙氨酸 以whereby tert-butyl (2S)-1-[(2R)-4-methyl-1-oxo-1-[2-oxo-8-(2-oxopyrrolidin-1-yl)-1-(thiophen-3-ylmethyl)-1,2,3,4-tetrahydroquinolin-3-ylamino]pentan-2-ylamino]-1-oxopropan-2-ylcarbamate (688 mg) was yielded的产率得到tert-butyl (2S)-1-[(2R)-4-methyl-1-oxo-1-[2-oxo-8-(2-oxopyrrolidin-1-yl)-1-(thiophen-3-ylmethyl)-1,2,3,4-tetrahydroquinolin-3-ylamino]pentan-2-ylamino]-1-oxopropan-2-ylcarbamate