Technology Process of (2R,3S,4S,5R,6R,8R,9S,10S,11R,12R,13R)-3,5:9,11-bis(isopropylidenedioxy)-6,12-bis(methoxymethoxy)-2,4,6,8,10,12-hexamethyl-13-(4-methoxybenzyloxy)pentadecan-1-ol
There total 34 articles about (2R,3S,4S,5R,6R,8R,9S,10S,11R,12R,13R)-3,5:9,11-bis(isopropylidenedioxy)-6,12-bis(methoxymethoxy)-2,4,6,8,10,12-hexamethyl-13-(4-methoxybenzyloxy)pentadecan-1-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:
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114811-29-9
(2R,3S,4S,5R,6R,8R,9S,10S,11R,12R,13R)-3,5:9,11-bis(isopropylidenedioxy)-6,12-bis(methoxymethoxy)-1-tert-butyldiphenylsilyloxy-2,4,6,8,10,12-hexamethyl-13-(4-methoxybenzyloxy)pentadecane
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114811-30-2
(2R,3S,4S,5R,6R,8R,9S,10S,11R,12R,13R)-3,5:9,11-bis(isopropylidenedioxy)-6,12-bis(methoxymethoxy)-2,4,6,8,10,12-hexamethyl-13-(4-methoxybenzyloxy)pentadecan-1-ol
- Guidance literature:
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With
tetrabutyl ammonium fluoride;
In
tetrahydrofuran;
at 55 - 60 ℃;
DOI:10.1016/S0040-4039(00)96566-3
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114811-30-2
(2R,3S,4S,5R,6R,8R,9S,10S,11R,12R,13R)-3,5:9,11-bis(isopropylidenedioxy)-6,12-bis(methoxymethoxy)-2,4,6,8,10,12-hexamethyl-13-(4-methoxybenzyloxy)pentadecan-1-ol
- Guidance literature:
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Multi-step reaction with 11 steps
1: 86 percent / 1.5M n-BuLi / hexane; tetrahydrofuran / -50 deg C, -23/-20 deg C, 2.5 h, -80 deg C, 40 min
2: 92 percent / 4N HCl / tetrahydrofuran / 11 h / Ambient temperature
3: 93 percent / imidazole / CH2Cl2 / 2 h / Ambient temperature
4: 79 percent / PPTS / CH2Cl2 / 2.5 h / Ambient temperature
5: 88 percent / MeI, NaHCO3 / acetonitrile / 1.5 h / 70 °C
6: 86 percent / 1.5M n-BuLi, diisopropylamine / hexane; tetrahydrofuran / -15 deg C, 30 min, -80 deg C, 1 h
7: 71 percent / H2 / Raney Ni(W-2) / ethanol / 0.5 h / Ambient temperature
8: 92 percent / oxalyl chloride, DMSO / CH2Cl2 / -60 °C
9: 82.9 percent / diethyl ether; tetrahydrofuran / 1 h / -85 °C
10: diisopropylethylamine / CH2Cl2 / RT, 50/55 deg C, 11 h
11: 94 percent / 1.0M n-Bu4NF / tetrahydrofuran / RT, 55/60 deg C, 2 h
With
1H-imidazole; hydrogenchloride; n-butyllithium; oxalyl dichloride; tetrabutyl ammonium fluoride; hydrogen; pyridinium p-toluenesulfonate; sodium hydrogencarbonate; dimethyl sulfoxide; diisopropylamine; N-ethyl-N,N-diisopropylamine; methyl iodide;
Raney Ni(W-2);
In
tetrahydrofuran; diethyl ether; ethanol; hexane; dichloromethane; acetonitrile;
DOI:10.1248/cpb.37.1167
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114811-30-2
(2R,3S,4S,5R,6R,8R,9S,10S,11R,12R,13R)-3,5:9,11-bis(isopropylidenedioxy)-6,12-bis(methoxymethoxy)-2,4,6,8,10,12-hexamethyl-13-(4-methoxybenzyloxy)pentadecan-1-ol
- Guidance literature:
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Multi-step reaction with 9 steps
1: Et3N, DMAP / CH2Cl2 / 23 h / Heating
2: 90 percent / 60percent NaH / ethanol; 1,2-dimethoxy-ethane / 2 h / Heating
3: NaIO4 / H2O; methanol / 8.5 h / Ambient temperature
4: 86 percent / 1.5M n-BuLi, diisopropylamine / hexane; tetrahydrofuran / -15 deg C, 30 min, -80 deg C, 1 h
5: 71 percent / H2 / Raney Ni(W-2) / ethanol / 0.5 h / Ambient temperature
6: 92 percent / oxalyl chloride, DMSO / CH2Cl2 / -60 °C
7: 82.9 percent / diethyl ether; tetrahydrofuran / 1 h / -85 °C
8: diisopropylethylamine / CH2Cl2 / RT, 50/55 deg C, 11 h
9: 94 percent / 1.0M n-Bu4NF / tetrahydrofuran / RT, 55/60 deg C, 2 h
With
dmap; sodium periodate; n-butyllithium; oxalyl dichloride; tetrabutyl ammonium fluoride; hydrogen; sodium hydride; dimethyl sulfoxide; triethylamine; diisopropylamine; N-ethyl-N,N-diisopropylamine;
Raney Ni(W-2);
In
tetrahydrofuran; methanol; 1,2-dimethoxyethane; diethyl ether; ethanol; hexane; dichloromethane; water;
DOI:10.1248/cpb.37.1167