(4R,5R,7R,8S)-4,8-bis(benzyloxy)-5,9-bis(t-butyldimethylsiloxy)-2,2-dichloro-7-(4-methoxybenzyloxy)-6,6-dimethylnonan-3-ol

Base Information

Chemical Name:(4R,5R,7R,8S)-4,8-bis(benzyloxy)-5,9-bis(t-butyldimethylsiloxy)-2,2-dichloro-7-(4-methoxybenzyloxy)-6,6-dimethylnonan-3-ol
CAS No.:333956-95-9
Molecular Formula:C₄₅H₇₀Cl₂O₇Si₂
Molecular Weight:850.124
Hs Code.:

Synonyms:(4R,5R,7R,8S)-4,8-bis(benzyloxy)-5,9-bis(t-butyldimethylsiloxy)-2,2-dichloro-7-(4-methoxybenzyloxy)-6,6-dimethylnonan-3-ol

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Chemical Property of (4R,5R,7R,8S)-4,8-bis(benzyloxy)-5,9-bis(t-butyldimethylsiloxy)-2,2-dichloro-7-(4-methoxybenzyloxy)-6,6-dimethylnonan-3-ol

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Technology Process of (4R,5R,7R,8S)-4,8-bis(benzyloxy)-5,9-bis(t-butyldimethylsiloxy)-2,2-dichloro-7-(4-methoxybenzyloxy)-6,6-dimethylnonan-3-ol

There total 18 articles about (4R,5R,7R,8S)-4,8-bis(benzyloxy)-5,9-bis(t-butyldimethylsiloxy)-2,2-dichloro-7-(4-methoxybenzyloxy)-6,6-dimethylnonan-3-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: 51.0%

: 75-34-3
1,1-dichloroethane

: 182265-34-5
(2R,3R,5R,6S)-2,6-Dibenzyloxy-3,7-bis(tert-butyldimethylsiloxy)-5-(p-methoxybenzyloxy)-4,4-dimethylheptanal

: 333956-95-9
(4R,5R,7R,8S)-4,8-bis(benzyloxy)-5,9-bis(t-butyldimethylsiloxy)-2,2-dichloro-7-(4-methoxybenzyloxy)-6,6-dimethylnonan-3-ol

Guidance literature:: With n-butyllithium; In tetrahydrofuran; hexane; at -100 - -78 ℃; for 1h;
DOI:10.1246/bcsj.74.113

Reference yield:

: 31600-43-8
methyl 2-(benzyloxy)acetate

: 333956-95-9
(4R,5R,7R,8S)-4,8-bis(benzyloxy)-5,9-bis(t-butyldimethylsiloxy)-2,2-dichloro-7-(4-methoxybenzyloxy)-6,6-dimethylnonan-3-ol

Guidance literature:: Multi-step reaction with 6 steps

1: 83 percent / hexamethyldisilazane; n-BuLi / hexane; tetrahydrofuran / -78 - 20 °C

2: 87 percent / MgBr₂*Et₂O / toluene / 1 h / -19 °C

3: 100 percent / 2,6-lutidine / CH₂Cl₂ / 0 °C

4: DIBAL / toluene / -78 °C

5: 94 percent / oxalyl chloride; DMSO / CH₂Cl₂ / -78 - 20 °C

6: 51 percent / n-BuLi / hexane; tetrahydrofuran / 1 h / -100 - -78 °C

With 2,6-dimethylpyridine; n-butyllithium; oxalyl dichloride; diisobutylaluminium hydride; dimethyl sulfoxide; 1,1,1,3,3,3-hexamethyl-disilazane; magnesium bromide; In tetrahydrofuran; hexane; dichloromethane; toluene; 5: Swern's oxidation;
DOI:10.1246/bcsj.74.113

Reference yield:

: 69739-34-0
t-butyldimethylsiyl triflate

: 333956-95-9
(4R,5R,7R,8S)-4,8-bis(benzyloxy)-5,9-bis(t-butyldimethylsiloxy)-2,2-dichloro-7-(4-methoxybenzyloxy)-6,6-dimethylnonan-3-ol

Guidance literature:: Multi-step reaction with 4 steps

1: 100 percent / 2,6-lutidine / CH₂Cl₂ / 0 °C

2: DIBAL / toluene / -78 °C

3: 94 percent / oxalyl chloride; DMSO / CH₂Cl₂ / -78 - 20 °C

4: 51 percent / n-BuLi / hexane; tetrahydrofuran / 1 h / -100 - -78 °C

With 2,6-dimethylpyridine; n-butyllithium; oxalyl dichloride; diisobutylaluminium hydride; dimethyl sulfoxide; In tetrahydrofuran; hexane; dichloromethane; toluene; 3: Swern's oxidation;
DOI:10.1246/bcsj.74.113