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Design, synthesis and bioevaluation of novel 6-substituted aminoindazole derivatives as anticancer agents.

ABSTRACT: In the present study, a series of 6-substituted aminoindazole derivatives were designed, synthesized, and evaluated for bio-activities. The compounds were initially designed as indoleamine 2,3-dioxygenase 1 (IDO1) inhibitors based on the structural feature of five IDO1 inhibitors, which are currently on clinical trials, and the important anticancer activity of the indazole scaffold. One of them, compound N-(4-fluorobenzyl)-1,3-dimethyl-1H-indazol-6-amine (36), exhibited a potent anti-proliferative activity with an IC₅₀ value of 0.4 ± 0.3 μM in human colorectal cancer cells (HCT116). This compound also remarkably suppressed the IDO1 protein expression. In the cell-cycle studies, the suppressive activity of compound 36 in HCT116 cells was related to the G2/M cell cycle arrest. Altogether, the current findings demonstrate that compound 36 would be promising for further development as a potential anticancer agent.

SUBMITTER: Hoang NX

PROVIDER: S-EPMC9058813 | biostudies-literature | 2020 Dec

REPOSITORIES: biostudies-literature

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Design, synthesis and bioevaluation of novel 6-substituted aminoindazole derivatives as anticancer agents.

Hoang Ngo Xuan NX Hoang Van-Hai VH Luu Thi-Thu-Trang TT Luu Hung N HN Ngo Thien T Van Hieu Duong D Long Nguyen Huu NH Anh Le Viet LV Ngo Son Tung ST Nguyen Yen Thi Kim YTK Han Byung Woo BW Nguyen Thanh Xuan TX Hai Dinh Thi Thanh DTT Hien Tran Thi Thu TTT Tran Phuong-Thao PT

RSC advances 20201222 73

In the present study, a series of 6-substituted aminoindazole derivatives were designed, synthesized, and evaluated for bio-activities. The compounds were initially designed as indoleamine 2,3-dioxygenase 1 (IDO1) inhibitors based on the structural feature of five IDO1 inhibitors, which are currently on clinical trials, and the important anticancer activity of the indazole scaffold. One of them, compound <i>N</i>-(4-fluorobenzyl)-1,3-dimethyl-1<i>H</i>-indazol-6-amine (36), exhibited a potent an ...[more]

PMID: 35516257

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Project description:BackgroundThe amide derivatives of nonsteroidal anti-inflammatory drugs have been reported to possess antitumor activity. The present work describes the synthesis of dexibuprofen amide analogues (4a-j) as potential anticancer agents.MethodsThe title amides (4a-j) were obtained by simple nucleophilic substitution reaction of dexibuprofen acid chloride with substituted amines in good yield and chemical structures were confirmed by FTIR, 1H NMR, 13C NMR and mass spectral data.ResultsThe brine shrimp lethality assay results showed that all of the synthesized compounds are non-toxic to shrimp larvae. The inhibitory effects on tumor growth were evaluated and it was observed that N-(2,5-dichlorophenyl)-2-(4-isobutylphenyl) propionamide (4e) and N-(2-chlorophenyl)-2-(4-isobutylphenyl) propionamide (4g) exhibited excellent antitumor activity compared to all other derivatives. The compound 4e bearing 2,5-dichloro substituted phenyl ring and 4g possesses 2-chloro substituted phenyl ring exhibited 100% inhibition of the tumor growth. The anticancer activity was evaluated against breast carcinoma cell line (MCF-7) and it was observed that derivative 4e exhibited excellent growth inhibition of cancer cells with IC50 value of 0.01±0.002 µm, which is better than the standard drugs. The docking studies against breast cancer type 1 susceptibility protein BRCA1 (PDBID 3K0H) exhibited good binding affinities, which are in good agreement with the wet lab results. The compounds 4e and 4g showed the binding energy values of -6.39 and -6.34 Kcal/mol, respectively. The molecular dynamic (MD) simulation was also carried out to evaluate the residual flexibility of the best docking complexes of compounds 4e and 4g. The MD simulation analysis assured that the 4e formed a more stable complex with the target protein than the 4g. The synthesized amide derivatives exhibited were devoid of gastrointestinal side effects and no cytotoxic effects against human normal epithelial breast cell line (MCF-12A) were found.ConclusionBased upon our wet lab and dry lab findings we propose that dexibuprofen analogue 4e may serve as a lead structure for the design of more potent anticancer drugs.

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Design, synthesis and bioevaluation of novel 6-substituted aminoindazole derivatives as anticancer agents.

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Design, synthesis and bioevaluation of novel 6-substituted aminoindazole derivatives as anticancer agents.

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