ABSTRACT
A series of novel 4-aminobenzofuroxan derivatives containing aromatic/aliphatic amines fragments was achieved via aromatic nucleophilic substitution reaction of 4,6-dichloro-5-nitrobenzofuroxan. The quantum chemistry calculations were performed to identify the factors affecting the regioselectivity of the reaction. The formation of 4-substituted isomer is favored both by its greater stability and the lower activation barrier. Antimicrobial activity of the obtained compounds has been evaluated and some of them were found to suppress effectively bacterial biofilm growth. Fungistatic activity of 4-aminobenzofuroxans were tested on two genetically distinct isolates of M. nivale. The effect of some benzofuroxan derivatives is likely to be more universal against different varieties of M. nivale compared with benzimidazole and carbendazim. Additionally, their anti-cancer activity in vitro has been tested. 4-aminofuroxans possessing aniline moiety showed a high selectivity towards MCF-7 and M-HeLa tumor cell lines. Moreover, they exhibit a significantly lower toxicity towards normal liver cells compared to Doxorubicin and Tamoxifen. Thus, benzofuroxans containing aromatic amines fragments in their structure are promising candidates for further development both as anti-cancer and anti-microbial agents.
Subject(s)
Anti-Infective Agents/chemical synthesis , Antineoplastic Agents/chemical synthesis , Benzoxazoles/chemical synthesis , Drug Discovery , Anti-Infective Agents/chemistry , Anti-Infective Agents/pharmacology , Antineoplastic Agents/chemistry , Antineoplastic Agents/pharmacology , Benzoxazoles/chemistry , Dose-Response Relationship, Drug , Drug Design , Drug Discovery/methods , Drug Screening Assays, Antitumor , Drugs, Investigational/chemical synthesis , Drugs, Investigational/chemistry , HeLa Cells , Humans , Inhibitory Concentration 50 , MCF-7 Cells , Microbial Sensitivity Tests , Molecular Structure , Structure-Activity Relationship , Tumor Cells, CulturedABSTRACT
A library of novel 2-(het)arylpyrrolidine-1-carboxamides were obtained via a modular approach based on the intramolecular cyclization/Mannich-type reaction of N-(4,4-diethoxybutyl)ureas. Their anti-cancer activities both in vitro and in vivo were tested. The in vitro activity of some compounds towards M-Hela tumor cell lines was twice that of the reference drug tamoxifen, whereas cytotoxicity towards normal Chang liver cell did not exceed the tamoxifen toxicity. In vivo studies showed that the number of surviving animals on day 60 of observation was up to 83% and increased life span (ILS) was up to 447%. Additionally, some pyrrolidine-1-carboxamides possessing a benzofuroxan moiety obtained were found to effectively suppress bacterial biofilm growth. Thus, these compounds are promising candidates for further development both as anti-cancer and anti-bacterial agents.
Subject(s)
Anti-Infective Agents/chemical synthesis , Anti-Infective Agents/pharmacology , Antineoplastic Agents/chemical synthesis , Antineoplastic Agents/pharmacology , Pyrrolidines/chemical synthesis , Pyrrolidines/pharmacology , Animals , Anti-Infective Agents/chemistry , Antineoplastic Agents/chemistry , Biofilms/drug effects , Cell Line, Tumor , Chemistry Techniques, Synthetic , Dose-Response Relationship, Drug , Humans , Mice , Microbial Sensitivity Tests , Models, Molecular , Molecular Conformation , Molecular Structure , Pyrrolidines/chemistry , Structure-Activity RelationshipABSTRACT
The approach to the novel 1-[(2-aminoethyl)sulfonyl]-2-arylpyrrolidines via unique intramolecular cyclization/aza-Michael reactions of N-(4,4-diethoxybutyl)ethenesulfonamide have been developed, which benefits from high yields of target compounds, mild reaction conditions, usage of inexpensive and low-toxic reagents, and allows for wide variability in both amine and aryl moieties. Biotesting with whole-cell luminescent bacterial biosensors responding to DNA damage showed that all tested compounds are not genotoxic. Tested compounds differently affect the formation of biofilms by Vibrio aquamarinus DSM 26054. Some of the tested compounds were found to suppress the bacterial biofilms growth and thus are promising candidates for further studies.
