Treatment of 1-nitroso-1-phenyl- and 1-nitroso-1-(4-tolyl)-3-(4-pyridylmethyl)ureas (Ia, b) with methanol and ethanol at room temperature gave methyl and ethyl N-(4-pyridylmethyl)-carbamates (IIIa, b) in almost quantitative yields, together with benzene (IVa) and toluene (IVb), respectively. Treatment of Ia, b with benzene at 70°C gave 4-pyridylmethylamine (V) with biphenyl (VIa) and its 4-methyl derivative (VIb), respectively. Treatment of Ia, b with sodium azide in aqueous acetone at -5°C gave 1, 3-bis(4-pyridylmethyl)urea (VII) and phenylazides (VIIIa, b) in more than 90% yields.Compound Ia showed antitumor activity against rat ascites hepatoma AH13, but not against mouse lymphoid leukemia L1210. The mechanisms of these reactions and the mechanism of antitumor action of Ia are discussed
将1-硝基-1-苯基和1-硝基-1-(4-甲基苯基)-3-(4-
吡啶甲基)
脲(Ia, b)在室温下用
甲醇和
乙醇处理,几乎定量产出N-(4-
吡啶甲基)的甲基和乙基
碳酸酯(IIIa, b),同时分别生成苯(IVa)和
甲苯(IVb)。在70°C下用苯处理Ia, b,分别得到了4-
吡啶甲基胺(V)和
联苯(VIa)及其4-甲基衍
生物(VIb)。在-5°C下用
水相
醋酸钠处理Ia, b,得到了1, 3-双(4-
吡啶甲基)
脲(VII)和苯基
叠氮化物(VIIIa, b),产率超过90%。化合物Ia对大鼠腹
水肝癌AH13表现出抗肿瘤活性,但对小鼠淋巴细胞白血病L1210无效。讨论了这些反应的机制以及Ia的抗肿瘤作用机制。