4-(N-(Benzyloxycarbonyl)-N-(2-methylprop-1-yl)amino)piperidine hydrochloride 、 1-(SR)-Benzyloxy-3-(SR)-((4-(N-(benzyloxycarbonyl)-N-(ethyl)amino)piperidin-1-yl)methyl)-4-(SR)-phenylcyclopentane hydrochloride salt 生成 1-(RS)-Benzyloxy-3-(SR)-((4-(N-(benzyloxycarbonyl)-N-(2-methylpropyl)amino)piperidin-1-yl)methyl)-4-(SR)-phenylcyclopentane hydrochloride salt