Preparation and Reactions of 2-Methyl-7-(3-methyl-5-oxo-1-phenyl-2-pyrazolin-4-yl)-5-arylthiazolo[3,2-a]-pyrimido[4,5-d]oxazin-4(5H)-one
作者:Mohamed Salah K. Youssef、Mohamed S. Abbady、Ragaa A. Ahmed、Ahmed A. Omar
DOI:10.1002/cjoc.201180268
日期:2011.7
Ethyl 7‐amino‐3‐(3‐methyl‐5‐oxo‐1‐phenyl‐2‐pyrazolin‐4‐yl)‐5‐aryl‐5H‐thiazolo[3,2‐a]pyrimidine‐6‐carboxylate was hydrolyzed with an ethanolic sodium hydroxide and the sodium salt thus formed underwent cyclization with acetic anhydride to afford 2‐methyl‐7‐(3‐methyl‐5‐oxo‐1‐phenyl‐2‐pyrazolin‐4‐yl)‐5‐arylthiazolo[3,2‐a]pyrimido[4,5‐d]oxazin‐4(5H)‐one. This compound was transformed to related heterocyclic
乙基7-氨基-3-(3-甲基-5-氧代-1-苯基--2-吡唑啉-4-基)-5-芳基-5 H-噻唑啉[3,2 - a ]嘧啶-6-羧酸盐为用乙醇氢氧化钠水解,将形成的钠盐与乙酸酐环化,得到2-甲基-7-(3-甲基-5-氧代-1-苯基-2-吡唑啉-4-基)-5-芳基噻唑[3,2- a ]嘧啶[4,5 - d ]恶嗪-4(5 H)-一。该化合物通过与各种试剂反应转化为相关的杂环系统。测试了所制备化合物对革兰氏阳性和革兰氏阴性细菌以及酵母样和丝状真菌的生物活性。他们揭示了在某些情况下极好的杀生物特性。