Synthesis of sulfonamide derivatives of pyrido-[2,1-<Emphasis Type="Italic">b</Emphasis>]quinazolin-11-one and pyrido[1,2-<Emphasis Type="Italic">a</Emphasis>]quinazolin-6-one |
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Authors: | R M Shlenev S I Filimonov A V Tarasov A S Danilova P A Agat’ev |
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Abstract: | Methods were developed of indirect introduction of sulfonamide group in the structures of pyrido-2,1-b]quinazolin-11-one and pyrido1,2-a]quinazolin-6-one underlain by cyclocondensation of 2-halo-5-(Rsulfamoyl) benzoyl chlorides with derivatives of 2-aminopyridine. The fact of thermal rearrangement of 8-(morpholin-4-ylsulfonyl)pyrido1,2-a]quinazolin-6-one into isomeric 2-(morpholine-4-ylsulfonyl)pyrido2,1-b]-quinazolin-11-one was experimentally registered. |
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