Derivatives of imidazopyrroloquinoline (IPQ) and its esters were synthesized. Some of these compounds potently inhibited aldose reductases of rabbit lens and dog kidney, as well as the human recombinant enzyme, though the coenzyme pyrroloquinoline quinone (PQQ) was a relatively poor inhibitor. The IPQ esters with a methyl substituent at the C-3 carboxyl group were less potent inhibitors than the analogs without esterification at this position. An IPQ ester with the free carboxyl group at C-3 inhibited sorbitol accumulation in rat red blood cells.
合成了
咪唑并
吡咯喹啉(IPQ)的衍
生物及其
酯类。其中一些化合物能有效抑制兔晶状体和狗肾脏的醛糖还原酶以及人类
重组酶,但辅酶
吡咯喹啉醌(
PQQ)的抑制效果相对较差。在 C-3 羧基上具有甲基取代基的 IPQ 酯的抑制效果不如在该位置没有酯化的类似物。C-3 位有游离羧基的 IPQ 酯可抑制
山梨醇在大鼠红细胞中的积累。