Synthesis, Characterization, and Fungicidal Activity of New Thienopyridopyrimidine Derivatives
作者:Jian-Chao Liu、Hong-Wu He
DOI:10.1080/00397911.2011.552154
日期:2012.7.15
Abstract Iminophosphorane 3 is a important intermediate in organic synthesis. A series of new 2-substituted tetrahydrobenzo[4′,5′]thieno[3′,2′:5,6]pyrido[4,3-d]pyrimidin-4(3H)-ones 5 have been designed and synthesized via the tandem aza-Wittig reaction in 58–92% yields. Iminophosphorane 3 reacted with phenyl isocyanate (or 4-chlorophenyl isocyanate, 4-fluorophenyl isocyanate) to give carbodiimide 4
摘要 亚氨基正膦3是有机合成中重要的中间体。设计并合成了一系列新的2-取代四氢苯并[4',5']噻吩并[3',2':5,6]吡啶并[4,3-d]嘧啶-4(3H)-ones 5串联 aza-Wittig 反应的产率为 58-92%。亚氨基正膦 3 与异氰酸苯酯(或 4-氯苯基异氰酸酯、4-氟苯基异氰酸酯)反应得到碳二亚胺 4,在催化量的 EtONa 存在下,将其进一步用胺处理以环化。化合物5的结构已通过1H NMR、电子轰击质谱、红外光谱和元素分析得到证实。初步生物测定结果表明,某些化合物在50mg/L的剂量下对立枯丝核菌和灰葡萄孢具有抑制活性。图形概要