1,4-bis(3-hydroxycarbonylphenyl)-butadiyne 、 2-hydroxy-3,7,8,12,13-pentamethoxy-10,15-dihydro-5H-tribenzo[a,d,g]cyclononene 在
4-二甲氨基吡啶 、
N,N'-二环己基碳二亚胺 作用下,
以33%的产率得到(6,12,13,19,20-Pentamethoxy-5-tetracyclo[15.4.0.03,8.010,15]henicosa-1(21),3,5,7,10,12,14,17,19-nonaenyl) 3-[4-[3-[(6,12,13,19,20-pentamethoxy-5-tetracyclo[15.4.0.03,8.010,15]henicosa-1(21),3,5,7,10,12,14,17,19-nonaenyl)oxycarbonyl]phenyl]buta-1,3-diynyl]benzoate