L-乳酸 、
(2R,5S)-5-(2-cyanoimidazol-1-ylmethyl)-4-{2-[6-(4-fluorobenzyl)-3,3-dimethyl-2,3-dihydro-pyrrolo[3,2-b]pyridin-1-yl]-2-oxo-ethyl}-2-methyl-piperazine-1-carboxylic acid tert-butyl ester 在
二氯甲烷 、
碳酸氢钠 作用下,
以
三氟乙酸 、
二氯甲烷 、
乙酸乙酯 为溶剂,
反应 2.0h,
以to give 1-{[(2R,5R)-1-(2-{6-[(4-fluorophenyl)methyl]-3,3-dimethyl-1H,2H,3H-pyrrolo[3,2-b]pyridin-1-yl}-2-oxoethyl)-5-methylpiperazin-2-yl]methyl}-1H-imidazole-2-carbonitrile L-lactate (Example 10; 0.11 g) as a colourless solid的产率得到1-{[(2R,5R)-1-(2-{6-[(4-fluorophenyl)methyl]-3,3-dimethyl-1H,2H,3H-pyrrolo[3,2-b]pyridin-1-yl}2-oxo-ethyl)-5-methylpiperazin-2-yl]methyl}-1H-imidazole-2-carbonitrile L-lactate