Reactions of vicinal aromatic dibromo derivatives Ia-d with the system copper(I) cyanide-tetramethylurea gave the vicinal dicyano derivatives IIa-d; products of partial substitution, Va-d, demethylation and deacetylation, IIIa-c, were also formed. The compounds IIIa-c were also prepared by direct demethylation of compounds IIa-c with the system anhydrous aluminium chloride-dichloroethane. The structures of selected compounds were determined by spectral methods. Compounds IIa-d have proved to have a moderate antineoplastic effect in animals with some transplantable experimental tumours.
Alkylation of phenols IIa-IIc with ω-(N,N-dialkylamino)alkyl chlorides IIIa-IIId in an aqueous and/or a two-phase (toluene and aqueous potassium hydroxide) medium, and reactions of phenols IId-IIf with isopropylamine, gave rise to ethers IV-XIX. Compounds IV and V were used to prepare derivatives XX-XXVI. Reduction of the 7-oxo group in the compound V by the action of sodium borohydride produced the 7-hydroxy derivatives XXIV-XXVI, whereas reduction under conditions of the Wolf-Kishner reaction led to derivatives XXVII and XXVIII, respectively, which were also obtained by alkylation of XXIX with IIIa in an anhydrous medium. The compound XXIX was prepared by reduction of compound IIa. Most the of compounds prepared had marked antineoplastic effects, particularly compounds IV and V. Compounds V, VII, IX and XVIII exhibited antibacterial effects, and compounds XVI, XVIII and XXIII were as efficacious in subcutaneous application against encephalomyocarditis virus as Tiloron, used as standard.
Depending on the conditions of hydrolysis, vicinal aromatic dicyano derivatives Ia-Ic gave anhydrides IIa-IIe and imides of 4-aryl-1-alkoxynaphthalene-2,3-dicarboxylic acids, IIIa,b, along with products of partial hydrolysis, decarboxylation and demethylation, IVa-IVd, IVf-IVg, and derivatives of benzo(c)fluorene, Va-Vc. The derivatives Va-Vc were also obtained by acid hydrolysis of dicyano derivatives Id-Ig. Methanolysis of the anhydride IId gave a mixture of positional isomers, IVh, which was esterified to the diester IVe. Intramolecular ring closure of the isomers IVh afforded derivatives of benzo(c)fluorene, VIa-VIb. The structures of the selected compounds were corroborated by IR and 1H NMR spectra. The compounds Va-Vc exhibited antiviral effects and interferonogenic activities in vivo.
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