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Synthesis of some novel nitrogenous furocoumarin derivatives

Elgamal M.H.A., Shalaby N.M.M., Shaban M.A.

Polish Journal of Chemistry

1998

Vol. 72, nr 4

735-745

Reaction of 5-chloro-6-formylfurocoumarins (3 and 4) withheterocyclic amines and hydrazine derivatives yields corresponding 5-N-substituted and 5-chloro-6-hydrazine derivatives 7a-h and 8a-h, respectively. Bergapten (5,6-c)isoxazole (9) or 6-oxime derivative 10 were obtained by reaction of 3 and 4 with hydroxylamine hydrochloride. Also, reaction of 5-hydroxybergapten (1) and 5-hydroxyisopimpinellin (2) with aliphatic, heterocyclic and aromatic amines beside benzenesulphonamide derivatives affords some novel 5- and 6-substituted aminofurocoumarins 11a-o, 12 a-f, and 13 a-f.The antimiocrobial activity of all compounds was studied.