[6,8-Bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-3-methyl-2,4-dihydrothieno[3,4-b][1,4]dioxepin-3-yl]methanol 、
3N-(1,4-dioxo-1,4-dihydronaphthalen-2-yl)propanoic acid 在
4-二甲氨基吡啶 、
盐酸-N-乙基-Nˊ-(3-二甲氨基丙基)碳二亚胺 作用下,
以
四氢呋喃 为溶剂,
以65%的产率得到[6,8-Bis(2,3-dihydrothieno[3,4-b][1,4]dioxin-5-yl)-3-methyl-2,4-dihydrothieno[3,4-b][1,4]dioxepin-3-yl]methyl 3-[(1,4-dioxonaphthalen-2-yl)amino]propanoate