(3S,5R,7S)-3-benzyloxy-9-tert-butyldimethylsilyloxy-2,2-dimethyl-5,7-O-isopropylidenenonane-1,5,7-triol

Base Information

Chemical Name:(3S,5R,7S)-3-benzyloxy-9-tert-butyldimethylsilyloxy-2,2-dimethyl-5,7-O-isopropylidenenonane-1,5,7-triol
CAS No.:1352746-49-6
Molecular Formula:C₂₇H₄₈O₅Si
Molecular Weight:480.761
Hs Code.:

Synonyms:(3S,5R,7S)-3-benzyloxy-9-tert-butyldimethylsilyloxy-2,2-dimethyl-5,7-O-isopropylidenenonane-1,5,7-triol

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Chemical Property of (3S,5R,7S)-3-benzyloxy-9-tert-butyldimethylsilyloxy-2,2-dimethyl-5,7-O-isopropylidenenonane-1,5,7-triol

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Technology Process of (3S,5R,7S)-3-benzyloxy-9-tert-butyldimethylsilyloxy-2,2-dimethyl-5,7-O-isopropylidenenonane-1,5,7-triol

There total 8 articles about (3S,5R,7S)-3-benzyloxy-9-tert-butyldimethylsilyloxy-2,2-dimethyl-5,7-O-isopropylidenenonane-1,5,7-triol 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: 94.0%

: 1352746-48-5
(3S,5R,7S)-7-benzyloxy-8,8-dimethyl-3,5-O-isopropylidenenonane-1,3,5,9-tetraol

: 18162-48-6
tert-butyldimethylsilyl chloride

: 1352746-49-6
(3S,5R,7S)-3-benzyloxy-9-tert-butyldimethylsilyloxy-2,2-dimethyl-5,7-O-isopropylidenenonane-1,5,7-triol

Guidance literature:: With 1H-imidazole; In dichloromethane; at 0 ℃;
DOI:10.1016/j.tet.2011.09.064

Reference yield:

: 1352746-46-3
(3S,5R,7S)-7-benzyloxy-9-tert-butyldimethylsilyloxy-1-tert-butyldiphenylsilyloxy-8,8-dimethylnonane-3,5-diol

: 1352746-49-6
(3S,5R,7S)-3-benzyloxy-9-tert-butyldimethylsilyloxy-2,2-dimethyl-5,7-O-isopropylidenenonane-1,5,7-triol

Guidance literature:: Multi-step reaction with 3 steps

1: pyridinium p-toluenesulfonate / 18 h / 20 °C / Inert atmosphere

2: tetrabutyl ammonium fluoride / tetrahydrofuran / 18 h / 20 °C / Inert atmosphere

3: 1H-imidazole / dichloromethane / 0 °C

With 1H-imidazole; tetrabutyl ammonium fluoride; pyridinium p-toluenesulfonate; In tetrahydrofuran; dichloromethane;
DOI:10.1016/j.tet.2011.09.064

Reference yield:

: 470470-80-5
(5S,7S)-7-benzyloxy-9-tert-butyldimethylsilyloxy-1-tert-butyldiphenylsilyloxy-5-hydroxy-8,8-dimethylnonan-3-one

: 1352746-49-6
(3S,5R,7S)-3-benzyloxy-9-tert-butyldimethylsilyloxy-2,2-dimethyl-5,7-O-isopropylidenenonane-1,5,7-triol

Guidance literature:: Multi-step reaction with 4 steps

1: lithium tri-t-butoxyaluminum hydride; lithium iodide / tetrahydrofuran; diethyl ether / 18 h / -78 °C / Inert atmosphere

2: pyridinium p-toluenesulfonate / 18 h / 20 °C / Inert atmosphere

3: tetrabutyl ammonium fluoride / tetrahydrofuran / 18 h / 20 °C / Inert atmosphere

4: 1H-imidazole / dichloromethane / 0 °C

With 1H-imidazole; tetrabutyl ammonium fluoride; pyridinium p-toluenesulfonate; lithium tri-t-butoxyaluminum hydride; lithium iodide; In tetrahydrofuran; diethyl ether; dichloromethane;
DOI:10.1016/j.tet.2011.09.064