Discovery of 2-Phenylamino-imidazo[4,5-<i>h</i>]isoquinolin-9-ones: A New Class of Inhibitors of Lck Kinase
作者:Roger J. Snow、Mario G. Cardozo、Tina M. Morwick、Carl A. Busacca、Yong Dong、Robert J. Eckner、Stephen Jacober、Scott Jakes、Suresh Kapadia、Susan Lukas、Maret Panzenbeck、Gregory W. Peet、Jeffrey D. Peterson、Anthony S. Prokopowicz、Rosemarie Sellati、Robert M. Tolbert、Matt A. Tschantz、Neil Moss
DOI:10.1021/jm020113o
日期:2002.8.1
An imidazo[4,5-h]isoquinolin-7,9-dione (1) was identified as an adenosine 5'-triphosphate competitive inhibitor of lck by high throughput screening. Initial structure-activity relationship studies identified the dichlorophenyl ring and the imide NH as important pharmacophores. A binding model was constructed to understand how 1 binds to a related kinase, lick. These results suggested that removing the gem-dimethyl group and flattening the ring would enhance activity. This was realized by converting 1 to the imidazo[4,5-h]isoquinolin-9-one (20), resulting in an 18-fold improvement in potency against lck and a 50-fold increase in potency in a cellular assay.