lipolysis was stimulated by five inhibitors of cyclic 3',5'-adenosine monophosphate phosphodiesterase : caffeine , theophylline , 1-methyl-3-isobutyl xanthine , 1-ethyl-4- ( isopropylidenehydrazine ) -1h-pyrazolo- ( 3,4 , -b ) -pyridine-5-carboxylic acid ethyl ester ( sq 20009 ) , and 4- ( 3,4-dimethoxybenzyl ) -2-imidazolidinone ( ro 7-2956 ) .
C0039771
theophylline
C0000096
1-methyl-3-isobutyl xanthine