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A convenient synthesis of a novel fused tetracyclic heterocoumarin
Author(s) -
Gharbi Rafik,
Romdhane Anis,
Mighri Zine,
Martin MarieThérèse
Publication year - 2005
Publication title -
journal of heterocyclic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.321
H-Index - 59
eISSN - 1943-5193
pISSN - 0022-152X
DOI - 10.1002/jhet.5570420128
Subject(s) - chemistry , condensation , stereochemistry , combinatorial chemistry , thermodynamics , physics
New tetracyclic 6 H ‐[1]benzopyrano[3,4‐ e ]pyrazolo[1,5‐ a ]pyrimidin‐6‐ones ( 4a‐e ) have been synthesized through the condensation under acidic conditions of [1]benzopyrano[4,3‐ c ][1,5]‐benzodiazepin‐7(8 H )‐one ( 1 ) and a series of 3,4‐disubsituted 5‐amino‐1 H ‐pyrazoles 3a‐e .