Nifurquinazol

{{Drugbox | IUPAC_name = 2,2'-{[2-(5-nitrofuran-2-yl)quinazolin-4-yl]imino}diethanol | image = Nifurquinazol.svg

| tradename = | pregnancy_category = | legal_status = Uncontrolled | routes_of_administration = ?

| bioavailability = | metabolism = | elimination_half-life = | excretion =

| C=16 | H=16 | N=4 | O=5 | molecular_weight = 344.32 g/mol | smiles = O=[N+]([O-])c3oc(c1nc(N(CCO)CCO)c2c(n1)cccc2)cc3 }}

Nifurquinazol (NF-1088) is an antibacterial agent of the nitrofuran class.^[1] It was never marketed.^[1]

Synthesis

Treatment of the amide from 5-nitrofuroic acid with phosphorus oxychloride leads to the corresponding nitrile (2). This intermediate is then converted to the iminoether (3) with ethanolic hydrogen chloride. Condensation of anthranilic acid with the iminoether in the presence of sodium methoxide represents another method for preparing quinazolones. The reaction can be visualized as proceeding through the formation of the amidine from addition-elimination of anthranilic acid; cyclization then affords the observed product (4). The amide function is then converted to the iminochloride with phosphorus oxychloride. Displacement of the newly introduced halogen by means of diethanolamine affords nifurquinazol chlorine with diethanolamine leads to the formation of nifurquinazol (5), one of the antibacterial nitrofurans.

References

^ ^a ^b Dictionary of organic compounds. London: Chapman & Hall. 1996. ISBN 0-412-54090-8.
^ Sherman, W. R.; Von Esch, Anne (1965). "Syntheses with 5-Nitro-2-furonitrile". Journal of Medicinal Chemistry. 8 (1): 25–28. doi:10.1021/jm00325a006. ISSN 0022-2623.
^ Burch, Homer A. (1966). "Nitrofuryl Heterocycles. IV1. 4-Amino-2-(5-nitro-2-furyl)quinazoline Derivatives". Journal of Medicinal Chemistry. 9 (3): 408–410. doi:10.1021/jm00321a034. ISSN 0022-2623.

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[isbn0-412-54090-8-1] Dictionary of organic compounds. London: Chapman & Hall. 1996. ISBN 0-412-54090-8.

[ShermanVon_Esch1965-2] Sherman, W. R.; Von Esch, Anne (1965). "Syntheses with 5-Nitro-2-furonitrile". Journal of Medicinal Chemistry. 8 (1): 25–28. doi:10.1021/jm00325a006. ISSN 0022-2623.

[Burch1966-3] Burch, Homer A. (1966). "Nitrofuryl Heterocycles. IV1. 4-Amino-2-(5-nitro-2-furyl)quinazoline Derivatives". Journal of Medicinal Chemistry. 9 (3): 408–410. doi:10.1021/jm00321a034. ISSN 0022-2623.

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