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(2S,3S)-3-(tert-butoxycarbonyl)amino-2-hydroxy-4-phenylbutanoic acid
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Ethyl (3R,5S)-6-hydroxy-3,5-O-isopropylidene-3,5-dihydroxyhexanoate
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(2R,3S)-3-amino-2-hydroxy-4-phenylbutanoic acid
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(R)-4-tert-butyldimethylsilyloxy-2-cyclopentenone
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(R)-(+)-4-Hydroxy-2-pyrrolidone
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