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  • Title: Synthesis and in vitro antitumor and antimicrobial activity of some 2,3-diaryl-7-methyl-4,5,6,7-tetrahydroindazole and 3,3a,4,5,6,7-hexahydroindazole derivatives.
    Author: Faidallah HM, Khan KA, Rostom SA, Asiri AM.
    Journal: J Enzyme Inhib Med Chem; 2013 Jun; 28(3):495-508. PubMed ID: 22329488.
    Abstract:
    The synthesis of a series of 2,3-diaryl-7-methyl-4,5,6,7-tetrahydroindazole and 3,3a,4,5,6,7-hexahydroindazole derivatives substituted with various biologically-active function groups with anticipated chemotherapeutic activity is described. 4-(7-methyl-3-aryl-3,3a,4,5,6,7-hexahydro-indazol-2-yl)benzenesulfonamides 2a-c, which were employed as key intermediates in this study, were synthesized by cyclocondensation of 6-arylidene-2-methylcyclohexanones 1a-c with 4-hydrazinobenzenesulfonamide hydrochloride. A detailed discussion of the reactions utilized in the preparation of the intermediate and target compounds is reported, and the structures of the newly synthesized compounds were substantiated with IR, (1)H and (13)C NMR spectral data and elementary microanalyses. Twenty of the newly synthesized compounds were selected by National Cancer Institute (NCI), Maryland, USA, to be evaluated for their antitumor activity and the results revealed that six compounds 3c, 4d,e, 5a,d and 8c exhibited broad spectrum of antitumor activity against most of the tested tumor cell lines. In addition, the in vitro antibacterial and antifungal activities of a number of the target compounds were also tested using the Agar-diffusion method. Some of these compounds have shown significant antibacterial and mild to moderate antifungal activities.
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