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Methyl (2R,3S)-3-(tert-butoxycarbonylamino)-2-hydroxy-3-phenylpropionate Methyl (2R,3S)-3-(benzoylamino)-2-hydroxy-3-phenylpropanoate DL-Isoserine DL-Serine (2S,3R)-3-AMINO-2-HYDROXY-4-PHENYLBUTYRIC ACID HYDROCHLORIDE BOC-(2S,3R)-3-AMINO-2-HYDROXY-5-METHYLHEXANOIC ACID (2S,3R)-3-PHENYLISOSERINE N-Cbz-(2R,3R)-3-amino-2-hydroxy-4-phenylbutyric acid BOC-(2R,3R)-3-AMINO-2-HYDROXY-5-METHYLHEXANOIC ACID N-(T-BOC)-3-PHENYL ISOSERINE ETHYL ESTER