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Issue 2, 2017
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Enantioselective chemoenzymatic synthesis of a key segment of neuronal nitric oxide synthase inhibitors and several related 3-aminopyridinylmethyl-4-hydroxypyrrolidines

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Abstract

The lipase catalyzed resolution of several cis and trans 3-aminopyridinylmethyl-4-hydroxypyrrolidines by acylation or hydrolysis has been studied. Some of these pryrrolidines are precursors in the synthesis of selective nNOS inhibitors; for this purpose, the best result is obtained in the resolution of (±)-trans-5via a CAL-A catalysed acylation. The high enantioselectivity of this process allows one to obtain in high yield the optically pure (3S,4R)-configured product that has the correct configuration to complete the synthesis of nNOS inhibitors. The study described here highlights the effect of structural variations remote from the stereogenic centers of the molecule on the reactivity and enantioselectivity of the enzymatic processes.

Graphical abstract: Enantioselective chemoenzymatic synthesis of a key segment of neuronal nitric oxide synthase inhibitors and several related 3-aminopyridinylmethyl-4-hydroxypyrrolidines

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Publication details

The article was received on 19 Jul 2016, accepted on 31 Aug 2016 and first published on 31 Aug 2016


Article type: Paper
DOI: 10.1039/C6GC01965J
Citation: Green Chem., 2017,19, 436-446
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    Enantioselective chemoenzymatic synthesis of a key segment of neuronal nitric oxide synthase inhibitors and several related 3-aminopyridinylmethyl-4-hydroxypyrrolidines

    Á. Villar-Barro, V. Gotor and R. Brieva, Green Chem., 2017, 19, 436
    DOI: 10.1039/C6GC01965J

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