N-((2α,11bα)-1,3,4,6,7,11b-hexahydro-2H-benzoquinolizin-2-yl)ethylenediamine trihydrochloride 以57%的产率得到Ethanesulfonic acid (2-ethanesulfonylamino-ethyl)-(2R,11bS)-1,3,4,6,7,11b-hexahydro-2H-pyrido[2,1-a]isoquinolin-2-yl-amide; compound with (Z)-but-2-enedioic acid