Ordóñez M, Lagunas-Rivera S, Hernández-Núñez E, Labastida-Galván V. Synthesis of syn-gamma-amino-beta-hydroxyphosphonates by reduction of beta-ketophosphonates derived from L-proline and L-serine.
Molecules 2010;
15:1291-301. [PMID:
20335981 PMCID:
PMC6257292 DOI:
10.3390/molecules15031291]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2010] [Revised: 02/05/2010] [Accepted: 03/02/2010] [Indexed: 12/02/2022] Open
Abstract
The reduction of γ-N-benzylamino-β-ketophosphonates 6 and 10, readily available from L-proline and L-serine, respectively, can be carried out in high diastereoselectivity with catecholborane (CB) in THF at -78 °C to produce the syn-γ-N-benzylamino-β-hydroxyphosphonates 11 and 13 as a single detectable diastereoisomer, under non-chelation or Felkin-Anh model control.
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