common structure found in drug agents, natural products and fine chemicals. Reported herein is an alternative access to heteroarylamine via radical-radical cross-coupling pathway, powered by visible light catalysiswithout any aid of externaloxidant and reductant. Only by visible light irradiation of a photocatalyst such as a metal-free photocatalyst, a cascade single electron transfer event of amines
Mesoionic purinone analogs as inhibitors of cyclic-AMP phosphodiesterase: comparison of several ring systems
作者:Michael E. Rogers、Richard A. Glennon、J. Doyle Smith、Marvin R. Boots、Nitin Nanavati、Julie E. Maconaughey、Debbie Aub、Sheree Thomas、R. G. Bass、Godwin Mbagwu
DOI:10.1021/jm00143a004
日期:1981.11
hydrophobic substituent at the N8 position. The five-membered ring of 1 can be replaced by a pyridine or isoquinoline nucleus without untoward effects. Preliminary kinetic data suggest that the type of enzyme inhibition produced by the mesoionic derivatives is similar to that observed for theophylline. Thus, several novel mesoionicringsystems display activity as inhibitors of cyclic-AMP PDE and can serve