Trialkylsilyl esters of 6-(substituted amino)phenyl-1,2-dihydro-2-oxonicotinic acid and acid addition salts thereof are disclosed. The compounds are useful intermediates in the preparation of pharmacological agents, especially antimicrobials of the penicillin or cephalosporin type. The compounds can be produced by reacting a 6-(substituted amino)phenyl-1,2-dihydro-2-oxonicotinic acid with a silylating agent and are converted to the useful corresponding acid chloride by reaction with thionyl chloride.
披露了6-(取代
氨基)苯基-1,2-二氢-2-氧基
烟酸的三烷基
硅酯及其酸盐。这些化合物是制备药理学药剂,特别是
青霉素或
头孢菌素类抗菌剂的有用中间体。这些化合物可以通过将6-(取代
氨基)苯基-1,2-二氢-2-氧基
烟酸与
硅化剂反应而制得,并通过与亚砜
氯反应转化为有用的相应酸
氯化物。