(4-dimethylamino-4-phenyl-cyclohexylmethyl)-carbamic acid phenyl ester 、
5-甲氧基-3-哌啶-4-基-1H-吲哚 在
silica gel 、
4-(5-methoxy-1H-indol-3-yl)-piperidine-1-carboxylic acid (4-dimethylamino-4-phenyl-cyclohexylmethyl)-amide 作用下,
以
1,4-二氧六环 为溶剂,
反应 0.9h,
以The non-polar diastereoisomer of 4-(5-methoxy-1H-indol-3-yl)piperidine-1-carboxylic acid-(4-dimethylamino-4-phenylcyclohexylmethyl)-amide [experiment 1 (116 mg, m.p. 106°-107° C., 32%) and experiment 2 (89 mg, m.p. 110°-112° C., 25%)], and the polar diastereoisomer of 4-(5-methoxy-1H-indol-3-yl)piperidine-1-carboxylic acid-(4-dimethylamino-4-phenylcyclohexylmethyl)-amide [experiment 1 (108 mg, m.p. 98°-100° C., 30%) and experiment 2 (92 mg, m.p. 92°-97° C., 26%)] were thereby obtained in pure form的产率得到4-(5-methoxy-1H-indol-3-yl)-piperidine-1-carboxylic acid (4-dimethylamino-4-phenyl-cyclohexylmethyl)-amide