A number of tetrahydroprotoberberines with electron-withdrawing groups on ring D have been synthesized via photocyclization of 2-formyl-1-benzylideneisoquinorine enamides as the key step.
文摘A number of tetrahydroprotoberberines with electron-withdrawing groups on ring D have been synthesized via photocyclization of 2-formyl-1-benzylideneisoquinorine enamides as the key step.
