Development of a scaleable synthesis of a 3-aminopyrazinone acetamide thrombin inhibitor
A scaleable route to 2-{3-[(2,2-difluoro-2-(2-pyridyl)ethyl)-animo]-6- chloro-2-oxohydropyrazinyl}-N-(3-fluoro(2-pyridyl))-methyl]acetamide 1 is described in which various scaleup issues were addressed to provide a safe, efficient, and robust route for th
Ashwood, Michael S.,Alabaster, Ramon J.,Cottrell, Ian F.,Cowden, Cameron J.,Davies, Antony J.,Dolling, Ulf H.,Emerson, Khateeta M.,Gibb, Andrew D.,Hands, David,Wallace, Debra J.,Wilson, Robert D.
PROCESS FOR THE PREPARATION OF PYRAZINONE THROMBIN INHIBITOR AND ITS INTERMEDIATES
Improved process for the preparation of 3-fluoro-2-pyridylmethyl-3-(2,2-difluoro-2-(2-pyridyl)ethylamino)-6-chloropyrazin-2-one-1-acetamide of formula (I) and its intermediates is provided.
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(2011/05/08)
PROCESS FOR THE PREPARATION OF PYRAZINONE THROMBIN INHIBITOR AND ITS INTERMEDIATES
An improved process for the preparation of 3-fruoro-2-pyridylmethyl-3-(2,2- difluoro-2-(2-pyridyl)ethylamino)-6-chloropyrazin-2-one- 1 -acetamide and its intermediates.
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Page/Page column 10
(2011/06/11)
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