(5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-19-(2-hydroxyethyl)-9,10-secocholesta-5,7,10(19)-trien-1α-ol

Base Information

• Chemical Name: (5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-19-(2-hydroxyethyl)-9,10-secocholesta-5,7,10(19)-trien-1α-ol
• CAS No.: 881032-39-9
• Molecular Formula: C₃₅H₆₂O₃Si
• Molecular Weight: 558.961
• Mol file: 881032-39-9.mol

Synonyms:(5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-19-(2-hydroxyethyl)-9,10-secocholesta-5,7,10(19)-trien-1α-ol

Chemical Property of (5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-19-(2-hydroxyethyl)-9,10-secocholesta-5,7,10(19)-trien-1α-ol

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-19-(2-hydroxyethyl)-9,10-secocholesta-5,7,10(19)-trien-1α-ol

There total 3 articles about (5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-19-(2-hydroxyethyl)-9,10-secocholesta-5,7,10(19)-trien-1α-ol which guide to synthetic route it. The literature collected by LookChem mainly comes from the sharing of users and the free literature resources found by Internet computing technology. We keep the original model of the professional version of literature to make it easier and faster for users to retrieve and use. At the same time, we analyze and calculate the most feasible synthesis route with the highest yield for your reference as below:

synthetic route:

Reference yield: 98.0%

(5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-19a-homo-9,10-secocholesta-5,7,10(19)-triene-19a,1α-carbolactone (881032-36-6) → (5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-19-(2-hydroxyethyl)-9,10-secocholesta-5,7,10(19)-trien-1α-ol (881032-39-9)

Guidance literature:

With lithium aluminium tetrahydride; In tetrahydrofuran; at 0 - 5 ℃; for 1h;

DOI:10.1021/ol052856k

Reference yield:

(5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-9,10-secocholesta-5,7,10(19)-trien-1α-yl 3-butenoate (881032-35-5) → (5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-19-(2-hydroxyethyl)-9,10-secocholesta-5,7,10(19)-trien-1α-ol (881032-39-9)

Guidance literature:

Multi-step reaction with 2 steps

1: 70 percent / Hoveyda second generation catalyst / toluene / 4 h / 80 °C

2: 98 percent / LiAlH₄ / tetrahydrofuran / 0.5 h / 20 °C

With lithium aluminium tetrahydride; Hoveyda-Grubbs catalyst second generation; In tetrahydrofuran; toluene;

DOI:10.1016/j.steroids.2007.03.005

Reference yield:

(1S,5R)-5-(tert-Butyl-dimethyl-silanyloxy)-3-[2-[(1R,3aS,7aR)-1-((R)-1,5-dimethyl-hexyl)-7a-methyl-octahydro-inden-(4E)-ylidene]-eth-(E)-ylidene]-2-methylene-cyclohexanol → (5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-19-(2-hydroxyethyl)-9,10-secocholesta-5,7,10(19)-trien-1α-ol (881032-39-9)

Guidance literature:

Multi-step reaction with 3 steps

1: 85 percent / N,N-dicyclohexylcarbodiimide; 4-dimethylaminopyridine / CH₂Cl₂ / 2 h / 20 °C

2: 70 percent / Hoveyda second generation catalyst / toluene / 4 h / 80 °C

3: 98 percent / LiAlH₄ / tetrahydrofuran / 0.5 h / 20 °C

With dmap; lithium aluminium tetrahydride; dicyclohexyl-carbodiimide; Hoveyda-Grubbs catalyst second generation; In tetrahydrofuran; dichloromethane; toluene;

DOI:10.1016/j.steroids.2007.03.005

upstream raw materials:

(5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-19a-homo-9,10-secocholesta-5,7,10(19)-triene-19a,1α-carbolactone

(5E,7E)-(3S)-3β-t-butyldimethylsilyloxy-9,10-secocholesta-5,7,10(19)-trien-1α-yl 3-butenoate