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Hyperconjugation with lone pair of morpholine nitrogen stabilizes transition state for phenyl hydroxylation in CYP3A4 metabolism of ( S)- N-[1-(3-morpholin-4-yl phenyl) ethyl]-3-phenylacrylamide
Journal article   Peer reviewed

Hyperconjugation with lone pair of morpholine nitrogen stabilizes transition state for phenyl hydroxylation in CYP3A4 metabolism of ( S)- N-[1-(3-morpholin-4-yl phenyl) ethyl]-3-phenylacrylamide

Abdul Rajjak Shaikh, Ewa Broclawik, Mohamed Ismael, Hideyuki Tsuboi, Michihisa Koyama, Momoji Kubo, Carlos A. Del Carpio and Akira Miyamoto
Chemical physics letters, Vol.419(4), pp.523-527
26/02/2006
DOI: https://doi.org/10.1016/j.cplett.2005.12.015

Abstract

Using quantum chemical modelling we describe a novel effect in the mechanism of CYP3A4 metabolism for the arene substrate with o-substituent yielding a lone pair donation to conjugate π system; this will compensate for the loss of aromaticity on formation of the tetrahedral complex and lower the rate-determining energy barrier.

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