Pyrroloquinoline quinone derivatives were synthesized as model compounds of a novel coenzyme PQQ. The 2-mono- and 2,9-dicarboxylic acid derivatives 1b and 1d and the 1-methylated derivative If were synthesized relatively easily from the intermediates 5 and 4 of the PQQ-synthesis. The 2, 7-dicarboxylic acid derivative 1e was also synthesized via a combination of the Japp-Klingemann reaction and Fischer indolization.
我们合成了
吡咯喹啉醌衍
生物,作为新型辅酶
PQQ 的模型化合物。2-mono- 和 2,9-二
羧酸衍
生物 1b 和 1d 以及 1-甲基化衍
生物 If 比较容易地从
PQQ 合成的中间产物 5 和 4 合成出来。2,7-二
羧酸衍
生物 1e 也是通过 Japp-Klingemann 反应和费歇尔
吲哚化反应合成的。