溴丁基-镁 、 dibenzyl (3R,8R)-3,8-di(3-iodopropyl)-1,3,4,6,8,9-hexahydrodipyrido(3,4-b:3,4-e)pyrazine-2,7-dicarboxylate 在
copper(I) bromide dimethylsulfide complex 作用下,
以
四氢呋喃 为溶剂,
以88%的产率得到dibenzyl (3R,8R)-3,8-diheptyl-1,3,4,6,8,9-hexahydrodipyrido(3,4-b:3',4'-e)pyrazine-2,7-dicarboxylate