4-{3-[(R)-((2S,5R)-2,5-dimethyl-piperazin-1-yl)-(3-hydroxy-phenyl)-methyl]-benzoyl}-piperazine-1-carboxylic acid ethyl ester 、
苯甲醛 以to give 0.42 g of the title compound as a light pink solid的产率得到4-{3-[(R)-((2S,5R)-4-benzyl-2,5-dimethylpiperazin-1-yl)(3-hydroxy-phenyl)methyl]benzoyl}piperazine-1-carboxylic acid ethyl ester