1-methyl-4-(2-methyl-10H-benzo[b]thieno[2,3-e][1,4]diazepin-4-yl)-1-(((2-octyldecanoyl)oxy)methyl)piperazin-1-ium iodide 、
Iodomethyl 2-hexyloctanoate 以to give Compound 52 (1.31 g, 75%)的产率得到1-(((2-hexyloctanoyl)oxy)methyl)-1-methyl-4-(2-methyl-10H-benzo[b]thieno[2,3-e][1,4]diazepin-4-yl)piperazin-1-ium iodide