Comparative studies on conventional and microwave synthesis of some benzimidazole, benzothiazole and indole derivatives and testing on inhibition of hyaluronidase.
Molecules 2008;
13:736-48. [PMID:
18463575 PMCID:
PMC6245189 DOI:
10.3390/molecules13040736]
[Citation(s) in RCA: 50] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/12/2008] [Revised: 03/20/2008] [Accepted: 03/20/2008] [Indexed: 12/04/2022] Open
Abstract
We have synthesized twelve 2-substituted benzimidazole, benzothiazole and indole derivatives using on both microwave irradiation and conventional heating methods. The microwave method was observed to be more beneficial as it provides an increase of yield from 3% to 113% and a 95 to 98 % reduction in time. All compounds were tested by a stains-all assay at pH 7 and by a Morgan-Elson assay at pH 3.5 for hyaluronidase inhibitory activity at a concentration of 100 microM. The most potent compound was 2-(4-hydroxyphenyl)-3-phenylindole (12) with an IC(50) value of 107 microM at both pH 7 and 3.5.
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