(1S)-1-((3aS,7aS,E)-4-((Z)-2-((3S,5R)-3,5-bis((tert-butyldimethysilyl)oxy)-2-methylenecyclohexylidene)ethylidene)-7a-methyloctahydro-1H-inden-1-yl)ethanol

Base Information

• Chemical Name: (1S)-1-((3aS,7aS,E)-4-((Z)-2-((3S,5R)-3,5-bis((tert-butyldimethysilyl)oxy)-2-methylenecyclohexylidene)ethylidene)-7a-methyloctahydro-1H-inden-1-yl)ethanol
• CAS No.: 204520-81-0
• Molecular Formula: C34H62O3Si2
• Molecular Weight: 561.009

Synonyms:

Chemical Property of (1S)-1-((3aS,7aS,E)-4-((Z)-2-((3S,5R)-3,5-bis((tert-butyldimethysilyl)oxy)-2-methylenecyclohexylidene)ethylidene)-7a-methyloctahydro-1H-inden-1-yl)ethanol

Chemical Property:

Purity/Quality:

99% ^*data from raw suppliers

Safty Information:

• Pictogram(s):  
• Hazard Codes: 

MSDS Files:

Useful:

Technology Process of (1S)-1-((3aS,7aS,E)-4-((Z)-2-((3S,5R)-3,5-bis((tert-butyldimethysilyl)oxy)-2-methylenecyclohexylidene)ethylidene)-7a-methyloctahydro-1H-inden-1-yl)ethanol

There total 2 articles about (1S)-1-((3aS,7aS,E)-4-((Z)-2-((3S,5R)-3,5-bis((tert-butyldimethysilyl)oxy)-2-methylenecyclohexylidene)ethylidene)-7a-methyloctahydro-1H-inden-1-yl)ethanol 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:

1-[1,3-bis-(tert-butyldimethylsilanyloxy)-10,13-dimethyl-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]ethanol (103909-74-6) → (1S,3R,20S)-1,3-bis(tert-butyldimethylsilyloxy)-9,10-secopregna-5Z,7E,10(19)-trien-20-ol (204520-81-0)

Guidance literature:

In tetrahydrofuran; at 0 ℃; for 3.125h; UV-irradiation; Heating / reflux;

Reference yield:

(1S,3R,20S)-1,3-bis(tert-butyldimethylsilyloxy)pregna-5,7-dien-20-ol → (1S,3R,20S)-1,3-bis(tert-butyldimethylsilyloxy)-9,10-secopregna-5Z,7E,10(19)-trien-20-ol (204520-81-0)

Guidance literature:

In tetrahydrofuran; for 3.5h; Inert atmosphere; Cooling with ice; Microwave irradiation; Reflux;

Reference yield:

C19H27Cl3O4Si + (1S,3R,20S)-1,3-bis(tert-butyldimethylsilyloxy)-9,10-secopregna-5Z,7E,10(19)-trien-20-ol (204520-81-0) → (1S,3R,20S)-20-(4-triethylsilyloxy-4-methylpentanoyloxy)-1,3-bis(tert-butyldimethylsilyloxy)-9,10-secopregna-5Z,7E,10(19)-triene (889453-41-2)

Guidance literature:

With dmap; In benzene; at 20 ℃; for 0.5h;

upstream raw materials:

1-[1,3-bis-(tert-butyldimethylsilanyloxy)-10,13-dimethyl-2,3,4,9,10,11,12,13,14,15,16,17-dodecahydro-1H-cyclopenta[a]phenanthren-17-yl]ethanol

Downstream raw materials:

(1S,3R,20S)-20-(4-triethylsilyloxy-4-methylpentanoyloxy)-1,3-bis(tert-butyldimethylsilyloxy)-9,10-secopregna-5Z,7E,10⁽¹⁹⁾-triene

(1S,3R,20S)-20-(5-triethylsilyloxy-5-ethylheptanoyloxy)-1,3-bis(t-butyldimethylsilyloxy)-9,10-secopregna-5Z,7E,10⁽¹⁹⁾-triene

(1S,3R,20S)-20-(4-hydroxy-4-methylpentanoyloxy)-9,10-secopregna-5Z,7E,10⁽¹⁹⁾-trien-1,3-diol

(1S,3R,20S)-20-(5-hydroxy-5-ethylheptanoyloxy)-9,10-secopregna-5Z,7E,10⁽¹⁹⁾-triene-1,3-diol

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