4-amino-N-[4-[C-hydroxy-N-[4-[C-hydroxy-N-(4-methoxycarbonyl-2-propan-2-yloxyphenyl)carbonimidoyl]-2-propan-2-yloxyphenyl]carbonimidoyl]-2-propan-2-yloxyphenyl]-3-propan-2-yloxybenzenecarboximidic acid 、
2,7-二叔丁基-9,9-二甲基呫吨-4,5-二羧酸 在
2-氯-1-甲基吡啶碘化物 、
三乙胺 作用下,
以
二氯甲烷 为溶剂,
反应 48.0h,
以65%的产率得到2,7-ditert-butyl-4-N,5-N-bis[4-[C-hydroxy-N-[4-[C-hydroxy-N-[4-[C-hydroxy-N-(4-methoxycarbonyl-2-propan-2-yloxyphenyl)carbonimidoyl]-2-propan-2-yloxyphenyl]carbonimidoyl]-2-propan-2-yloxyphenyl]carbonimidoyl]-2-propan-2-yloxyphenyl]-9,9-dimethylxanthene-4,5-dicarboximidic acid