N1-(2R,11bS)-1,3,4,6,7,11b-Hexahydro-2H-pyrido[2,1-a]isoquinolin-2-yl-2-methyl-propane-1,2-diamine; hydrochloride 以68.9%的产率得到N-(2R,11bS)-1,3,4,6,7,11b-Hexahydro-2H-pyrido[2,1-a]isoquinolin-2-yl-N-(2-methanesulfonylamino-2-methyl-propyl)-methanesulfonamide; compound with (Z)-but-2-enedioic acid