N21,N22-(Hydroxymethyletheno)-meso-tetraphenylporphin hydroperchlorate 在
sodium hydroxide 作用下,
以60%的产率得到(1Z,6Z)-2,7,12,21-tetraphenyl-13-oxa-16,25,27,28-tetrazaheptacyclo[13.9.2.13,6.18,11.012,17.016,20.022,25]octacosa-1,3(28),4,6,8,10,15(26),17,19,21,23-undecaene