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    • 54. 发明授权
    • Process for the preparation of imidazoles useful in angiotensin II
antagonism
    • 用于制备用于血管紧张素II拮抗作用的咪唑的方法
    • US5294722A
    • 1994-03-15
    • US869971
    • 1992-04-16
    • Kyoung S. Kim
    • Kyoung S. Kim
    • C07D233/54C07D233/90C07D403/06C07D403/14C07D235/30C07D233/00C07D235/04
    • C07D233/54C07D233/90C07D403/06C07D403/14
    • Imidazoles of the formula ##STR1## are prepared by treating a ketone ##STR2## with a nitrogenic acid, nitrite or nitrate in the presence of an acid to form a hydroxynitrile ##STR3## which is treated with R.sup.2 --CHO and an ammonium to form an N-hydroxyimidazole ##STR4## which is reduced in the presence of a buffer. In these compounds, R.sup.1 is hydrogen, alkyl, haloalkyl, cycloalkyl, cycloalkylalkyl, aryl or aralkyl;R.sup.2 is alkyl, alkenyl, alkynyl, cycloalkyl, cycloalkylalkyl, cycloalkylalkenyl, cycloalkylalkynyl, or --(CH.sub.2).sub.m Z(CH.sub.2).sub.n R.sup.3, each of which is optionally substituted with F or --CO.sub.2 R.sup.1 ; or aryl or aralkyl, each of which is optionally substituted with 1 or 2 groups selected from halogen, lower alkoxy, lower alkyl, or nitro;R.sup.3 is hydrogen, alkyl, cycloalkyl, lower alkenyl, or lower alkynyl;and the remaining symbols are as defined in the specification.
    • 通过在酸存在下用氮酸,亚硝酸盐或硝酸盐处理酮,制备式“IMAGE”的咪唑,以形成羟基腈,其用R2-CHO和铵处理形成 在缓冲液存在下还原的N-羟基咪唑。 在这些化合物中,R 1是氢,烷基,卤代烷基,环烷基,环烷基烷基,芳基或芳烷基; R2是烷基,烯基,炔基,环烷基,环烷基烷基,环烷基烯基,环烷基炔基或 - (CH2)mZ(CH2)nR3,其各自任选被F或-CO 2 R 1取代; 或芳基或芳烷基,其各自任选被1或2个选自卤素,低级烷氧基,低级烷基或硝基的基团取代; R3是氢,烷基,环烷基,低级烯基或低级炔基; 其余符号如说明书中所定义。