Synthesis and Antifungal Activity of Some New Quinazoline and Benzoxazinone Derivatives
作者:Alyaa A. Shalaby、Abdel Momen A. El-Khamry、S.A. Shiba、Abdel Aal Alm Eldeen Abdalah Ahmed、Awaref A. Hanafi
DOI:10.1002/1521-4184(200011)333:11<365::aid-ardp365>3.0.co;2-2
日期:2000.11
condensation with either primary or secondary amines affording the benzamide derivatives (3—7), while with alcohols in presence of the base, corresponding esters were obtained (8 and 9). Acylation of the hydrazide (12) or its cyclized form (13) gave (14—17). The quinazolinone derivative (18) was obtained either when (12) was reacted with nitrous acid or via fusion of (2) with ammonium acetate. The thione
迄今为止未知的 2-isopropyl-6,8-dibromo-4H-3,1-benzoxazin-4-one (2) 与伯胺或仲胺缩合得到苯甲酰胺衍生物 (3-7),同时与醇缩合在碱存在下,得到相应的酯(8和9)。酰肼(12)或其环化形式(13)的酰化得到(14-17)。当 (12) 与亚硝酸反应或通过 (2) 与乙酸铵融合时,得到喹唑啉酮衍生物 (18)。通过(18)与劳森试剂反应获得的硫酮(20)进行烷基化产生(21-25)或用伯胺脱硫得到(26和27)。用氯化剂处理(18)和(20)分别提供了(29、30)和(28、29)混合物。我们的十种化合物在 PDA 培养基上针对 Sclerotium cepivorum 和 Botrytis allii 进行了检测。这些化合物显着减少了这些真菌的菌丝生长和菌核数量,这些真菌会导致洋葱的白腐病和颈部腐烂病。