Synthesis and antiallergic properties of some 4H,5H-pyrano[3,2-c][1]benzopyran-4-one, 4H,5H-[1]benzothiopyrano[4,3-b]pyran-4-one, and 1,4-dihydro-5H-[1]benzothiopyrano[4,3-b]pyridin-4-one derivatives
作者:Adolf Philipp、Ivo Jirkovsky、Rene R. Martel
DOI:10.1021/jm00186a016
日期:1980.12
A series of novel 2-carboxylic acids of the title ring systems has been synthesized from the corresponding 3-acetyl-4H-[1]benzopyran-4-one and benzothiopyran-4-one. These acids were examined for their ability to inhibit the rat passive cutaneous anaphylaxis; the pyridinone carboxylic acids 6 displayed a higher degree of iv and ip anaphylactic activities than their pyranone analogues 5. The potassium
由相应的3-乙酰基-4H- [1]苯并吡喃-4-酮和苯并噻喃-4-酮合成了一系列标题环系统的新型2-羧酸。检查了这些酸抑制大鼠被动皮肤过敏反应的能力。吡啶酮羧酸6表现出比吡喃酮类似物5高的iv和ip过敏活性。钾盐5a(R6 = K)是唯一表现出中等口服活性的化合物。