5-Cyano-1-(3-trifluoromethoxybenzyl)-1H-indole-2-carboxylic acid (1-hydroxymethyicyclopentylmethyl)amide 、
5-cyano-1-(3-trifluoromethoxybenzyl)-1H-indole-2-carboxylic acid 、
racemic 3-amino-2-methyl-propionic acid ethyl ester hydrochloride 在
3-{[5-cyano-1-(3-trifluoromethoxybenzyl)-1H-indole-2-carbonyl]amino}-2-methyl-propionic acid ethyl ester 作用下,
以giving 3-{[5-cyano-1-(3-trifluoromethoxybenzyl)-1H-indole-2-carbonyl]amino}-2-methylpropionic acid ethyl ester (204 mg, 51%)的产率得到3-{[5-cyano-1-(3-trifluoromethoxybenzyl)-1H-indole-2-carbonyl]amino}-2-methyl-propionic acid ethyl ester