Synthesis of 6- or 4-functionalized indoles via a reductive cyclization approach and evaluation as aromatase inhibitors

Bioorganic & Medicinal Chemistry Letters
2008.0

Abstract

Two new series of benzonitrile derivatives on position 6 or 4 of indole ring were successfully synthesized via a Leimgruber-Batcho reaction. All the compounds were evaluated in vitro on the inhibition of aromatase (CYP19) and 17alpha-hydroxylase-C17,20-lyase (CYP17). The racemate, 4-[(1H-imidazol-1-yl)(1H-indol-4-yl)methyl]benzonitrile 9, showed high level of inhibitory activity towards CYP19 (IC(50)=11.5 nM).

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