(3R,4S,5S,6S)-6-Diphenylmethyl-5-(-2-methoxy-5-methylsulfonyl-benzylamino)-1-azabicyclo[2.2.2]octane-3-carboxamidedihydrochloride 、
2-Methoxy-5-methanesulfonylbenzaldehyde 在
甲醇乙酸乙酯 作用下,
以
盐酸 为溶剂,
反应 15.0h,
以to give a titled compound (268.2 mg, 55.6%) as a white crystalline的产率得到(3R,4S,5S,6S)-6-Diphenylmethyl-5-(-2-methoxy-5-methylsulfonyl-benzylamino)-1-azabicyclo[2.2.2]octane-3-carboxylic acid dihydrochloride