The reduction of various hydantoins with sodium borohydride gave the corresponding 4-hydroxy- 2-imidazolidinones in high yields. In contrast, reduction employin
The reaction of picoline derivatives 3-6 with hydrazonoylhalide 1a produced imidazo[1,2-a]pyridines 7-10, while the reaction of the same picoline derivatives wi
Sessiline is an alkaloid which is recently isolated from the fruits of Acanthopanax sessiliflorus. The molecule contains two five-membered heterocyclic units jo