(22R,24R)-23,25-bis(phenylsulfonyl)-6β-methoxy-24-methyl-3α,5-cyclo-5α-cholestan-22-ol

Base Information

• Chemical Name: (22R,24R)-23,25-bis(phenylsulfonyl)-6β-methoxy-24-methyl-3α,5-cyclo-5α-cholestan-22-ol
• CAS No.: 1188379-35-2
• Molecular Formula: C₄₁H₅₈O₆S₂
• Molecular Weight: 711.04
• Mol file: 1188379-35-2.mol

Synonyms:(22R,24R)-23,25-bis(phenylsulfonyl)-6β-methoxy-24-methyl-3α,5-cyclo-5α-cholestan-22-ol

Chemical Property of (22R,24R)-23,25-bis(phenylsulfonyl)-6β-methoxy-24-methyl-3α,5-cyclo-5α-cholestan-22-ol

Chemical Property:

Purity/Quality:

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (22R,24R)-23,25-bis(phenylsulfonyl)-6β-methoxy-24-methyl-3α,5-cyclo-5α-cholestan-22-ol

There total 1 articles about (22R,24R)-23,25-bis(phenylsulfonyl)-6β-methoxy-24-methyl-3α,5-cyclo-5α-cholestan-22-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: 43.0%

(2R)-2,3-dimethyl-1,3-bis(phenylsulfonyl)butane (1188379-32-9) + (20S)-6β-methoxy-3α,5-cyclo-5α-pregnane-20-carbaldehyde (25819-77-6) → (22R,24R)-23,25-bis(phenylsulfonyl)-6β-methoxy-24-methyl-3α,5-cyclo-5α-cholestan-22-ol (1188379-35-2)

Guidance literature:

(2R)-2,3-dimethyl-1,3-bis(phenylsulfonyl)butane; With n-butyllithium; In tetrahydrofuran; hexane; at -50 ℃; for 0.5h; Inert atmosphere;

(20S)-6β-methoxy-3α,5-cyclo-5α-pregnane-20-carbaldehyde; In tetrahydrofuran; hexane; at -78 ℃; for 3h; Inert atmosphere;

With water; ammonium chloride; In tetrahydrofuran; hexane;

DOI:10.1134/S1068162009020137

Reference yield: 81.0%

(22R,24R)-23,25-bis(phenylsulfonyl)-6β-methoxy-24-methyl-3α,5-cyclo-5α-cholestan-22-ol (1188379-35-2) + acetyl chloride (75-36-5) → (22R,24R)-23,25-bis(phenylsulfonyl)-22-acetoxy-6β-methoxy-24-methyl-3α,5-cyclo-5α-cholestane (1188379-37-4)

Guidance literature:

With pyridine; dmap; In dichloromethane; at 20 ℃; for 24h;

DOI:10.1134/S1068162009020137

upstream raw materials:

(2R)-2,3-dimethyl-1,3-bis(phenylsulfonyl)butane

(20S)-6β-methoxy-3α,5-cyclo-5α-pregnane-20-carbaldehyde

Downstream raw materials:

(22R,24R)-23,25-bis(phenylsulfonyl)-22-acetoxy-6β-methoxy-24-methyl-3α,5-cyclo-5α-cholestane