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    Suzhou Haiyu Biochem Industrial Co.,Ltd.
    Contact: Jason Li
    Tel: 0512-68097639
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    Email: sales@haiyubiochem.com,haiyubiochem@qq.com
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    Current position: Home >Data > Synthesis of the (3R,6S)-3-Amino-6-(2,3-difluorophenyl)azepan-2-one of Telcagepant (MK-0974), a Calcitonin Gene-Related Peptide Receptor Antagonist for the Treatment of Migraine Headache
    Data

    Synthesis of the (3R,6S)-3-Amino-6-(2,3-difluorophenyl)azepan-2-one of Telcagepant (MK-0974), a Calcitonin Gene-Related Peptide Receptor Antagonist for the Treatment of Migraine Headache

    Org. Lett., 2008, 10 (15), pp 3235–3238  2012/7/11 2:15:24
    Abstract Image

    Two novel routes have been developed to the (3R,6S)-3-amino-6-(2,3-difluorophenyl)-1-(2,2,2-trifluoroethyl)azepan-2-one 2 of the CGRP receptor antagonist clinical candidate telcagepant (MK-0974, 1). The first employs a ring-closing metathesis of the styrene 7 as the key reaction, while the second makes use of a highly diastereoselective Hayashi−Miyaura Rh-catalyzed arylboronic acid addition to nitroalkene 16. The latter route has been implemented to produce multigram quantities of telcagepant for extensive preclinical evaluation. 

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