ethyl 3,4-bis(benzyloxy)-1-(4-methoxyphenyl)-5-(pyridin-2-yl)-1H-pyrrole-2-carboxylate 在
钯 silica gel 、
甲醇 、
二氯甲烷 作用下,
以
tetrahydrofuran methanol 为溶剂,
以to afford ethyl 3,4-dihydroxy-1-(4-methoxyphenyl)-5-(pyridin-2-yl)-1H-pyrrole-2-carboxylate (UL1-083) (86 mg, 89%) as a pale orange solid的产率得到ethyl 3,4-dihydroxy-1-(4-methoxyphenyl)-5-(pyridin-2-yl)-1H-pyrrole-2-carboxylate