Synthesis and antiallergic activity of some acidic derivatives of 4H-pyrimido[2,1-b]benzazol-4-ones
作者:James J. Wade、Cristeta B. Toso、Charles J. Matson、Vincent L. Stelzer
DOI:10.1021/jm00358a031
日期:1983.4
Reactions of 2-aminobenzothiazole, 2-aminobenzoxazole, and 2-amino-1-methylbenzimidazole with dimethyl aminofumarate (DMAF) or diethyl ethoxymethylenemalonate (DEEM) led to 2- or 3-carboxy-4H-pyrimido[2,1-b]-benzazol-4-ones, respectively. Subsequent derivatization of these carboxylic acids gave the corresponding tetrazolylcarboxamides and tetrazoles. These acidic compounds were tested in the rat passive
2-氨基苯并噻唑,2-氨基苯并恶唑和2-氨基-1-甲基苯并咪唑与富马酸二甲酯(DMAF)或乙氧基亚甲基丙二酸二乙酯(DEEM)的反应导致生成2-或3-羧基-4H-嘧啶[2,1-b]-分别为苯并四唑。随后将这些羧酸衍生化,得到相应的四唑基羧酰胺和四唑。这些酸性化合物已在大鼠被动性皮肤过敏反应(PCA)分析中作为潜在的抗过敏剂进行了测试。当通过腹膜内途径测试时,许多化合物显示出的活性与色甘酸二钠(DSCG)相当,并且与DSCG不同,有些化合物在口服测试时也显示出活性。