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ID: ALA1136875

Journal: Bioorg Med Chem Lett

Title: Regioselective preparation of 5-hydroxypropranolol and 4'-hydroxydiclofenac with a fungal peroxygenase.

Authors: Kinne M, Poraj-Kobielska M, Aranda E, Ullrich R, Hammel KE, Scheibner K, Hofrichter M.

Abstract: An extracellular peroxygenase of Agrocybe aegerita catalyzed the H(2)O(2)-dependent hydroxylation of the multi-function beta-adrenergic blocker propranolol (1-naphthalen-1-yloxy-3-(propan-2-ylamino)propan-2-ol) and the non-steroidal anti-inflammatory drug diclofenac (2-[2-[(2,6-dichlorophenyl)amino]phenyl]acetic acid) to give the human drug metabolites 5-hydroxypropranolol (5-OHP) and 4'-hydroxydiclofenac (4'-OHD). The reactions proceeded regioselectively with high isomeric purity and gave the desired 5-OHP and 4'-OHD in yields up to 20% and 65%, respectively. (18)O-labeling experiments showed that the phenolic hydroxyl groups in 5-OHP and 4'-OHD originated from H(2)O(2), which establishes that the reaction is mechanistically a peroxygenation. Our results raise the possibility that fungal peroxygenases may be useful for versatile, cost-effective, and scalable syntheses of drug metabolites.

CiteXplore: 19394224

DOI: 10.1016/j.bmcl.2009.04.015