Inhibitors of blood platelet cAMP phosphodiesterase. 2. Structure-activity relationships associated with 1,3-dihydro-2H-imidazo[4,5-b]quinolin-2-ones substituted with functionalized side chains
作者:Nicholas A. Meanwell、Bradley C. Pearce、Herbert R. Roth、Edward C. R. Smith、Donald L. Wedding、J. J. Kim Wright、John O. Buchanan、Urzula M. Baryla、Marianne Gamberdella
DOI:10.1021/jm00092a019
日期:1992.7
platelet inhibitory properties did not always correlate with cAMP PDE inhibition across the series, probably due to variations in membrane permeability. Several compounds inhibited platelet aggregation measured ex vivo following oral administration to rats. Ester 11b, acid 12b, amide 13d, and sulfone 29c protected against thrombus formation in two different animal models following oral dosing and were found
合成了一系列在7位被官能化侧链取代的1,3-二氢-2H-咪唑并[4,5-b]喹啉-2-酮衍生物,并将其评估为人血小板cAMP磷酸二酯酶的抑制剂( PDE)以及ADP和胶原蛋白诱导的血小板聚集。结构修饰集中于侧链末端,侧链长度和侧链连接原子的变化。在侧链末端结合的官能团包括羧酸,酯和酰胺,醇,乙酸酯,腈,四唑和苯基砜部分。cAMP PDE抑制能力各不相同,并取决于侧链末端及其与杂环核的关系。杂环的N-1或N-3处的甲基化降低了cAMP PDE抑制能力。该结构类别的几个代表证明了对ADP和胶原蛋白诱导的血小板凝集的有效抑制作用,并且在低纳摩尔浓度下最大程度地发挥了最大作用。酰胺13d,13f,13h,13k,13m和13w比相对简单取代的化合物具有更大的效力。但是,血小板抑制特性在整个系列中并不总是与cAMP PDE抑制相关,这可能是由于膜通透性的变化所致。口服给予大鼠后,离体测量的几种化合物