On reaction of phenylmagnesium bromide with ethyl ester of 5-chloro-2-methyl-, 5-chloro-2-methylthio-, 5-bromo-2-methylthio-4-pyrimidinecarboxylic acid and 2,4-dimethyl-5-pyrimidinecarboxylic acid (IIa, IIb, IIc, V) corresponding 4-pyrimidinyl- or 5-pyrimidinyl-diphenylmethanols (IIIa, IIIb, IIIc, VI) were obtained. On reaction of thionyl-bis-imidazole with these methanols (4- or 5-pyrimidinyl)-diphenyl-(1-imidazolyl)-methanes IVa, IVb, IVc and VII were prepared. Phenylmagnesium bromide reacted with ethyl 4-methyl-2-methylthio-5-pyrimidinecarboxylate (VIII) under formation of dihydro derivative IX. We were unable to prepare Grignard's reagent from 5-bromo-2-methylthiopyrimidine and magnesium; it reacted with ethylmagnesium bromide under formation of dihydro derivative I. 5-Chloro-2-methylthio-4-pyrimidinecarboxylic acid when heated with NaOH in dimethyl sulfoxide gave 5-hydroxy-2-methylsulfinyl-4-pyrimidinecarboxylic acid. Compounds IVb and IVc prevented the growth of Candida albicans in vitro at almost the same concentrations as clotrimazole.
苯基溴化镁与5-氯-2-甲基乙酯、5-氯-2-甲硫基、5-溴-2-甲硫基-4-嘧啶羧酸和2,4-二甲基-5-嘧啶羧酸(IIa、IIb、IIc、V)发生反应,得到相应的4-嘧啶基或5-嘧啶基二苯甲醇(IIIa、IIIb、IIIc、VI)。硫酰双咪唑与这些二苯甲醇(4-或5-嘧啶基)-二苯甲基-(1-咪唑基)-甲烷(IVa、IVb、IVc、VII)反应制备而成。苯基溴化镁与乙酸乙酯-4-甲基-2-甲硫基-5-嘧啶羧酸乙酯(VIII)反应生成脱氢衍生物(IX)。我们无法从5-溴-2-甲硫基嘧啶和镁中制备格氏试剂;它与溴化乙基镁反应生成脱氢衍生物(I)。当5-氯-2-甲硫基-4-嘧啶羧酸在二甲基亚砜中与NaOH加热时,生成5-羟基-2-甲基亚砜基-4-嘧啶羧酸。化合物IVb和IVc在体外抑制了念珠菌的生长,其浓度几乎与克霉唑相同。