A facile synthesis and fungicidal activities of novel fluorine-containing pyrido[4,3-d]pyrimidin-4(3H)-ones
作者:Qingyun Ren、Zeping Cui、Hongwu He、Yucheng Gu
DOI:10.1016/j.jfluchem.2007.06.007
日期:2007.11
Sixteen novel 2-substituted-5,8,9-trimethyl-3-(4-fluoro-substituted)phenyl-thieno[3′,2′-5,6] pyrido[4,3-d]pyrimidin-4(3H)-ones 5a–5p were designed and have been successfully synthesized via tandem aza-Wittig and annulation reactions of the corresponding iminophosphorances 1, para-fluoro phenyl isocyanate, and substituted phenols or amines in 73–90% isolated yields. Their structures were clearly verified
十六种新颖的2-取代的5,8,9-三甲基-3-(4-氟取代的)苯基-硫代[3',2'-5,6]吡啶基[4,3 - d ]嘧啶-4(3设计了H)-ones 5a-5p,并已通过串联aza-Wittig和相应亚氨基磷1,对氟苯基异氰酸酯和取代酚或胺的环化反应成功合成,分离出产率为73-90%。通过IR,1 H NMR,EI-MS光谱和元素分析,以及在化合物5a的情况下,清楚地验证了它们的结构。,通过单晶X射线衍射进一步分析。初步生物测定的结果表明,某些化合物在50 mg / L的剂量下具有对茄状枯萎病菌和灰葡萄孢菌的抑制活性。