Efficient synthesis of 3,4-and4,5-dihydroxy-2-amino-cyclohexanecarboxylic acid enantiomers
An efficient method for the synthesis of (1S,2R,4R,5S)- and (1R,2R,4R,5S)-2-amino-4,5-dihydroxycyclohexanecarboxylic acids (-)-6 and (-)-9 and (1R,2R,3S,4R)- and (1S,2R,3S,4R)-2-amino- 3,4-dihydroxycyclohexanecarboxylic acids (-)-15 and (-)-18 was developed by using the OsO4-catalyzed oxidation o...
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Dokumentumtípus: | Cikk |
Megjelent: |
2009
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Sorozat: | TETRAHEDRON-ASYMMETRY
20 No. 19 |
doi: | 10.1016/j.tetasy.2009.09.001 |
mtmt: | 1286919 |
Online Access: | http://publicatio.bibl.u-szeged.hu/10393 |
Tartalmi kivonat: | An efficient method for the synthesis of (1S,2R,4R,5S)- and (1R,2R,4R,5S)-2-amino-4,5-dihydroxycyclohexanecarboxylic acids (-)-6 and (-)-9 and (1R,2R,3S,4R)- and (1S,2R,3S,4R)-2-amino- 3,4-dihydroxycyclohexanecarboxylic acids (-)-15 and (-)-18 was developed by using the OsO4-catalyzed oxidation of Boc-protected (1S,2R)-2-aminocyclohex-4-enecarboxylic acid (+)-2 and (1R,2S)-2-aminocyclohex-3-ene-carboxylic acid (+)-11. Good yields were obtained. The stereochemistry of the synthesized compounds was proven by NMR spectroscopy. (C) 2009 Elsevier Ltd. All rights reserved. |
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Terjedelem/Fizikai jellemzők: | 2220-2225 |
ISSN: | 0957-4166 |