(1S)-1-[(4R)-2,2-dimethyl-1,3-dioxolan+-4-yl][-2-hydroxyethylamm onium benzoate, a versatile building block for chiral 2-aminoalkanols: concise synthesis and application to nelfinavir, a potent HIV-protease inhibitor |
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Authors: | Inaba T Yamada Y Abe H Sagawa S Cho H |
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Institution: | Central Pharmaceutical Research Institute, Japan Tobacco, Inc, Osaka, Japan. |
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Abstract: | A concise synthesis of a versatile chiral C4 building block for 2-aminoalkanols, (1S)-1-(4R)-2,2-dimethyl-1,3-dioxolan-4-yl]-2-hydroxyethylammo nium benzoate (1a), was described. 1 (1a and its enantiomer 1b) acted as four stereoisomers of optically active 2-amino-1,3,4-butanetriol. The versatility of 1 was demonstrated by its application to the practical synthesis of nelfinavir (2), a potent HIV-protease inhibitor, as well as by the stereospecific synthesis of three diastereomers of 2. |
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