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Synlett 1999; 1999(9): 1435-1437
DOI: 10.1055/s-1999-2842
DOI: 10.1055/s-1999-2842
letter
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Enantioselective Syntheses of Key A-ring Precursors of 1α, 25-Dihydroxyvitamin D3 and Analogues
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Publication History
Publication Date:
31 December 1999 (online)
A practical synthesis of (3S,5R) oct-1-en-7-yne-3,5-diol derivatives 7 involving a catalytic enantioselective aldol reaction is described. Also a new synthesis of (3S,5R) non-1-en-7-yne-3,5,9-triol derivatives 3, starting from (2S,4S)-1,2 : 4,5-diepoxy-pentane 2 is reported.
1α,25-dihydroxyvitamin D3 - catalytic enantioselective aldol - 1,3-anti-diol - Pummerer reaction - Tebbe reaction