上游原料
Ethyl isonipecotate; ethyl 4-piperidinecarboxylate4-piperidinylmethanol3-ethoxybenzoyl chloride(3-ethoxyphenyl)[4-(hydroxymethyl)-1-piperidinyl]methanone[1-(3-ethoxybenzoyl)-4-piperidinyl]methyl 4-methylbenzenesulfonate5,8-dimethoxy-1,2,3,4-tetrahydroisoquinoline; 5-methoxy-1,2,3,4-tetrahydro-8-isoquinolinyl methyl ether
