89471-82-9

Upstream product

• 89471-83-0 6-Benzyloxy-8-methyl-1-(tetrahydro-pyran-2-yloxy)-non-3-yn-5-one 
• 89471-84-1 (+/-)-2-benzyloxy-N,N,4-trimethyl-pentanamide 
• 40365-61-5 2-(but-3-yn-1-yloxy)tetrahydropyran 

Downstream Products

• 101039-13-8 (R)-4-((E)-(R)-3-Benzyloxy-5-methyl-hex-1-enyl)-3-but-3-enyl-3-methyl-tetrahydro-pyran-2-one 
• 89471-89-6 (2R,3S)-3-((E)-(S)-3-Benzyloxy-5-methyl-hex-1-enyl)-2-but-3-enyl-2-methyl-pentane-1,5-diol 
• 89471-89-6 (2R,3R)-3-((E)-(R)-3-Benzyloxy-5-methyl-hex-1-enyl)-2-but-3-enyl-2-methyl-pentane-1,5-diol 
• 89494-17-7 Toluene-4-sulfonic acid (E)-(3S,6S)-6-benzyloxy-3-((S)-1-formyl-1-methyl-pent-4-enyl)-8-methyl-non-4-enyl ester 
• 101039-12-7 (E)-(3R,6R)-6-Benzyloxy-2-but-3-enyl-8-methyl-3-[2-(tetrahydro-pyran-2-yloxy)-ethyl]-non-4-enoic acid ethyl ester 
• 89471-91-0 (2R,3R)-3-((E)-(R)-3-Benzyloxy-5-methyl-hex-1-enyl)-2-but-3-enyl-1-(1-ethoxy-ethoxy)-2-methyl-cyclopentanecarbonitrile 
• 89471-87-4 (R)-4-((E)-(R)-3-Benzyloxy-5-methyl-hex-1-enyl)-3-but-3-enyl-tetrahydro-pyran-2-one 
• 89471-92-1 (2S,3S)-3-((E)-(S)-3-Benzyloxy-5-methyl-hex-1-enyl)-2-but-3-enyl-2-methyl-cyclopentanone 
• 89471-85-2 (E)-(5R,6S)-6-Benzyloxy-8-methyl-1-(tetrahydro-pyran-2-yloxy)-non-3-en-5-ol 

Relevant academic research and scientific papers

STEREOSELECTIVE SYNTHESIS OF STEROID SIDE CHAIN AND CD-RINGS. A ROUTE TO (+/-)-DE-AB-CHOLESTA-8(14),22-DIEN-9-ONE.

The stereoselective synthesis of (+/-)-de-AB-cholesta-8(14),22-dien-9-one from (+/-)-erythro-6-benzyloxy-5-hydroxy-8-methyl-1-tetrahydropyranyloxy-3(Z)-nonene by two Claisen rearrangements as a precursor of vitamin D3 is presented.

STEREOSELECTIVE REDUCTION OF α-ALKOXY ACETYLENIC KETONES WITH ZINC BOROHYDRIDE AND K-SELECTRIDE.

Reduction of α-benzyloxy acetylenic ketones with zinc borohydride afforded the erythro-acetylenic vicinal diols in 95percent stereoselectivity, while reduction with K-selectride gave the isomeric threo-diols in 90percent stereoselectivity.