alexa Evaluation of antioxidant and antimicrobial activities of Bergenin and its derivatives obtained by chemoenzymatic synthesis.
Pharmaceutical Sciences

Pharmaceutical Sciences

Medicinal & Aromatic Plants

Author(s): Nazir N, Koul S, Qurishi MA, Najar MH, Zargar MI

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Abstract Bergenin pentacetate (2), a peracetate derivative of biologically active lead compound Bergenin (1) isolated from Bergenia stracheyi was subjected to lipase catalyzed regioselective alcoholysis to obtain 3,4,10,11-tetracetate of Bergenin (3). The free hydroxyl group of 3 was derivatised using higher carboxylic acids to obtain acyl derivatives (4-7). These compounds synthesized via chemoenzymatic route were characterized using 1H NMR, 13C NMR and mass spectral data and evaluated for DPPH radical scavenging, antimicrobial and xanthine oxidase inhibitory activities. The studies revealed that biological activity of Bergenin can be optimized by selective modification of its structure. Copyright © 2011 Elsevier Masson SAS. All rights reserved. This article was published in Eur J Med Chem and referenced in Medicinal & Aromatic Plants

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