A highly efficient and versatile synthetic approach to the synthesis of annelated quinazoline derivatives viz. 3,4,9,10a-tetraazaphenanthrenes 5 - 7, thiazolidinylquinazoline 9, 2,4,9,10a-tetraazaphenanthrene 11, quinazolino[4,3-b]quinazolin-8-one 12 and imidazoquinazolines 14a,b, 15. Also, a variety of pyrazolylquinazolines 19 - 21, pyrimidinylquinazolines 22a,b were obtained via a sequence of heterocyclization reactions of 4-methyl-N-[4-(4-oxo-3,4-dihydroquinazolin-2-yl)phenyl]benzenesulfonamide (2) with different reagents. The new compounds were synthesized with the objective of study their antimicrobial activity
一种高效且多功能的合成方法用于合成环状喹唑啉衍生物,包括3,4,9,10a-四氮杂菲5-7,噻唑啉基喹唑啉9,2,4,9,10a-四氮杂菲11,喹唑啉并[4,3-b]喹唑啉-8-酮12和咪唑喹唑啉14a,b,15。 同时,通过4-甲基-N-[4-(4-氧代-3,4-二氢喹唑啉-2-基)苯基]苯磺酰胺(2)与不同试剂的杂环化反应序列,得到各种吡唑基喹唑啉19-21,嘧啶基喹唑啉22a,b。这些新合成的化合物旨在研究它们的抗微生物活性。