Xanthines with C8 chiral substituents as potent and selective adenosine A1 antagonists
作者:Norton P. Peet、Nelsen L. Lentz、Mark W. Dudley、Ann Marie L. Ogden、Deborah R. McCarty、Margaret M. Racke
DOI:10.1021/jm00077a004
日期:1993.12
Several 8-substituted 1,3-dipropylxanthines were synthesized, and their receptor binding affinities at adenosine A1 and A2 receptors were measured. When enantiomeric pairs of compounds were examined, the R enantiomers were significantly more potent than the corresponding S enantiomers. The most potent compound at the A1 receptor was (R)-3,7-dihydro-8-(1-methyl-2-phenylethyl)-1,3-dipropyl-1H-purine-2,6-di
合成了几种8-取代的1,3-二丙基黄嘌呤,并测量了它们在腺苷A1和A2受体上的受体结合亲和力。当检查化合物的对映异构体对时,R对映异构体比相应的S对映异构体显着更有效。在A1受体上最有效的化合物是(R)-3,7-二氢-8-(1-甲基-2-苯乙基)-1,3-二丙基-1H-嘌呤-2,6-di one(5a; MDL 102,503),其在A1受体处的Ki值为6.9 nM。但是,更具选择性的化合物是(R)-3,7-二氢-8-(1-苯丙基)-1,3-二丙基-1H-嘌呤-2,6-二酮(5d; MDL 102,234), A1受体的Ki值为23.2 nM,A2 / A1的比率为153。