Download PDF Opens in a new window. Article suggestions will be shown in a dialog on return to ScienceDirect. ... Please enable JavaScript to use all the features on this page. ... A concise asymmetric synthesis of (R)-(+)-methyl 3-amino-3-(5-hydroxy-2-pyridinyl)propanoate 2, a β-amino acid analog of l-azatyrosine 1 starting from the commercially available (−)-Andersen reagent (−)-3 in good overall yield is described. ... A concise asymmetric synthesis of (R)-(+)- ...