Diazocoupling of dihydroquinolin-4-ones with aryldiazonium nitrates gave the corresponding diazo derivatives, which undergo facile (4+2) cycloaddition reactions with phenylpropiolic acid to afford 2-aryl-4a-methyl-10-oxo-4-phenyl-2,4a,5,10-tetrahydropyridazino[4,3-b]quinoline-3-carboxylic acid derivatives 3. However, with β-nitrostyrene a mixture of three isomeric products 4a–c was obtained.
将二氢喹啉-4-酮与硝酸芳基重氮进行重氮偶合,得到相应的重氮衍生物,将其与苯丙酸进行容易的(4 + 2)环加成反应,得到2-芳基-4a-甲基-10-氧代-4-苯基-2,4a ,5,10-四氢吡啶并[4,3- b ]喹啉-3-羧酸衍生物3。但是,使用β-硝基苯乙烯,可以得到三种异构体产物4a – c的混合物。
Synthesis and pharmacological evaluation of new cysLT1 receptor antagonists
This paper describes the synthesis and pharmacological evaluation of three series of compounds 4a-b, 13a-k and 19, structurally related to the known potent cysLT(1) receptor antagonists RG-12553, ICI-204219 and ONO-1078, respectively. The common structural feature of these new series is the presence of a 4-quinolone nucleus acting as a template for substitution of the aromatic nucleus present in the prototype antagonists. We describe the evolution of these series leading to antagonists with potency at nanomolar concentrations in vitro.
SHUKLA, J. S.;AGARWAL, V. K., CURR. SCI., INDIA, 1985, 54, N 20, 1066-1067
作者:SHUKLA, J. S.、AGARWAL, V. K.
DOI:——
日期:——
DESAI K.; DESAI C. M., J. INDIAN CHEM. SOC. <JICS-AH>, 1975, 52, NO 5, 448-449