胡椒乙胺 、 4-(4-Chloro-5,6-dimethyl-thieno-[2,3-d]-pyrimidin-2-yl)-benzoic acid methylester 以yields 4-[4-(3,4-methylenedioxyphenethylamino)-5,6-dimethyl-thieno-[2,3-d]-pyrimidin-2-yl]-benzoic acid methylester的产率得到methyl 4-[4-(3,4-methylenedioxyphenethylamino)-5,6-dimethyl-thieno-[2,3-d]-pyrimidin-2-yl]-benzoate