Technology Process of (2S,3R,4R,5S,8R,9S)-2-{(3R,4R)-3-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-4-hydroxy-tetrahydro-thiophen-2-yl}-9-(2-methoxy-ethoxymethoxy)-8-methyl-4-(2-trimethylsilanyl-ethoxymethoxy)-1,6-dioxa-spiro[4.5]decan-3-ol
There total 32 articles about (2S,3R,4R,5S,8R,9S)-2-{(3R,4R)-3-[2-(tert-Butyl-diphenyl-silanyloxy)-ethyl]-4-hydroxy-tetrahydro-thiophen-2-yl}-9-(2-methoxy-ethoxymethoxy)-8-methyl-4-(2-trimethylsilanyl-ethoxymethoxy)-1,6-dioxa-spiro[4.5]decan-3-ol which
guide to synthetic route it.
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synthetic route:
- Guidance literature:
-
Multi-step reaction with 8 steps
1: 85 percent / L-diethyl tartrate (L-DET), Ti(O-iPr)4, t-BuOOH, 4-A sieves / CH2Cl2 / 20 h / -20 °C
2: 65 percent / toluene; hexane / Ambient temperature
3: 1.) TsCl, Et3N, 2.) Triton B / 1.) CH2Cl2, 0 deg C, 24 h, 2.) methanol, RT, 2 h
4: 1.) n-butyllithium / 1.) THF, -78 deg C, 1 h, 2.) -78 deg C, 20 min
5: 89 percent / H2 / 20percent Pd/CaCO3 / ethyl acetate / 8 h / Ambient temperature
6: 97 percent / m-chloroperbenzoic acid (m-CPBA), NaHCO3 / CH2Cl2 / 10 h / Ambient temperature
7: 88 percent / 20percent NaSH*xH2O / ethanol / 2 h / Ambient temperature
8: TsOH / CH2Cl2 / 1 h / -20 °C
With
titanium(IV) isopropylate; tert.-butylhydroperoxide; sodium hydrogensulfide; n-butyllithium; diethyl (2R,3R)-tartrate; 4 A molecular sieve; hydrogen; N-benzyl-trimethylammonium hydroxide; sodium hydrogencarbonate; toluene-4-sulfonic acid; triethylamine; p-toluenesulfonyl chloride; 3-chloro-benzenecarboperoxoic acid;
Lindlar's catalyst;
In
ethanol; hexane; dichloromethane; ethyl acetate; toluene;
DOI:10.1021/ja00167a068
- Guidance literature:
-
Multi-step reaction with 8 steps
1: 85 percent / L-diethyl tartrate (L-DET), Ti(O-iPr)4, t-BuOOH, 4-A sieves / CH2Cl2 / 20 h / -20 °C
2: 65 percent / toluene; hexane / Ambient temperature
3: 1.) TsCl, Et3N, 2.) Triton B / 1.) CH2Cl2, 0 deg C, 24 h, 2.) methanol, RT, 2 h
4: 1.) n-butyllithium / 1.) THF, -78 deg C, 1 h, 2.) -78 deg C, 20 min
5: 89 percent / H2 / 20percent Pd/CaCO3 / ethyl acetate / 8 h / Ambient temperature
6: 97 percent / m-chloroperbenzoic acid (m-CPBA), NaHCO3 / CH2Cl2 / 10 h / Ambient temperature
7: 88 percent / 20percent NaSH*xH2O / ethanol / 2 h / Ambient temperature
8: TsOH / CH2Cl2 / 1 h / -20 °C
With
titanium(IV) isopropylate; tert.-butylhydroperoxide; sodium hydrogensulfide; n-butyllithium; diethyl (2R,3R)-tartrate; 4 A molecular sieve; hydrogen; N-benzyl-trimethylammonium hydroxide; sodium hydrogencarbonate; toluene-4-sulfonic acid; triethylamine; p-toluenesulfonyl chloride; 3-chloro-benzenecarboperoxoic acid;
Lindlar's catalyst;
In
ethanol; hexane; dichloromethane; ethyl acetate; toluene;
DOI:10.1021/ja00167a068
- Guidance literature:
-
Multi-step reaction with 5 steps
1: 1.) n-butyllithium / 1.) THF, -78 deg C, 1 h, 2.) -78 deg C, 20 min
2: 89 percent / H2 / 20percent Pd/CaCO3 / ethyl acetate / 8 h / Ambient temperature
3: 97 percent / m-chloroperbenzoic acid (m-CPBA), NaHCO3 / CH2Cl2 / 10 h / Ambient temperature
4: 88 percent / 20percent NaSH*xH2O / ethanol / 2 h / Ambient temperature
5: TsOH / CH2Cl2 / 1 h / -20 °C
With
sodium hydrogensulfide; n-butyllithium; hydrogen; sodium hydrogencarbonate; toluene-4-sulfonic acid; 3-chloro-benzenecarboperoxoic acid;
Lindlar's catalyst;
In
ethanol; dichloromethane; ethyl acetate;
DOI:10.1021/ja00167a068