Add time:08/25/2019         Source:sciencedirect.com

Methyl (S)-3-amino-3-(3-pyridyl)propanoate (2) is a key starting material in the synthesis of RWJ-53308 (1), an orally active antagonist of the platelet fibrinogen receptor (GP IIb/IIIa antagonist). Herein, we describe an efficient stereoselective synthesis of 2 by the hydrogenation of enantiomeric enamine 8 with Pd(OH)2C, followed by the removal of the chiral auxiliary under mild conditions, a novel procedure that employs the combination of formic acid and triethylsilane.

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