249570-27-2

Upstream product

• 58479-61-1 tert-butylchlorodiphenylsilane 
• 183559-12-8 (R)-6-(4-Methoxy-benzyloxy)-1-(S)-oxiranyl-hex-4-yn-2-ol 
• 4039-83-2 3-(4-methoxybenzyloxy)propyne 
• 109905-51-3 (2S,4S)-1,2:4,5-dianhydro-3-deoxypentitol 

Downstream Products

• 249570-28-3 1-[(5R,7S)-8-Benzenesulfinyl-5,7-bis-(tert-butyl-diphenyl-silanyloxy)-oct-2-ynyloxymethyl]-4-methoxy-benzene 
• 249570-31-8 (2S,4R)-2,4-Bis-(tert-butyl-diphenyl-silanyloxy)-8-(4-methoxy-benzyloxy)-oct-6-ynal 
• 249570-32-9 1-[(5R,7S)-5,7-Bis-(tert-butyl-diphenyl-silanyloxy)-non-8-en-2-ynyloxymethyl]-4-methoxy-benzene 
• 249570-30-7 Acetic acid (2S,4R)-2,4-bis-(tert-butyl-diphenyl-silanyloxy)-8-(4-methoxy-benzyloxy)-1-phenylsulfanyl-oct-6-ynyl ester 

Relevant academic research and scientific papers

Enantioselective syntheses of key a-ring precursors of 1α, 25- dihydroxyvitamin D3 and analogues

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-p