Technology Process of (4aR,5aS,8S,10S,11aR,12aS)-10-((2R,3S,5R,6S)-5-Benzyloxy-6-benzyloxymethyl-3-hydroxy-tetrahydro-pyran-2-ylmethyl)-2,2-di-tert-butyl-4a,5a,8-trimethyl-octahydro-1,3,5,11-tetraoxa-2-sila-cycloocta[b]naphthalen-9-one
There total 16 articles about (4aR,5aS,8S,10S,11aR,12aS)-10-((2R,3S,5R,6S)-5-Benzyloxy-6-benzyloxymethyl-3-hydroxy-tetrahydro-pyran-2-ylmethyl)-2,2-di-tert-butyl-4a,5a,8-trimethyl-octahydro-1,3,5,11-tetraoxa-2-sila-cycloocta[b]naphthalen-9-one which
guide to synthetic route it.
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synthetic route:
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1054632-85-7
(4aR,5aS,8S,10S,11aR,12aS)-10-((2R,3S,5R,6S)-5-Benzyloxy-6-benzyloxymethyl-3-hydroxy-tetrahydro-pyran-2-ylmethyl)-2,2-di-tert-butyl-4a,5a,8-trimethyl-octahydro-1,3,5,11-tetraoxa-2-sila-cycloocta[b]naphthalen-9-one
- Guidance literature:
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Multi-step reaction with 13 steps
1.1: 92 percent / Sc(OTf)3 / benzene / 1.5 h
2.1: DDQ; H2O / CH2Cl2
3.1: NaHMDS; TBAI / tetrahydrofuran; dimethylformamide
4.1: Sc(OTf)3 / CH2Cl2 / 58 h / 20 °C
4.2: 89 percent / K2CO3; MeOH
5.1: Dess-Martin periodinane / CH2Cl2 / 2 h
6.1: NaHMDS / tetrahydrofuran / 0.67 h / 0 °C
7.1: 88 percent / DIBAL-H / CH2Cl2 / -78 °C
8.1: 80 percent / MeLi / tetrahydrofuran / -78 °C
9.1: Dess-Martin periodinane / CH2Cl2
9.2: 66 percent / Grubbs catalyst 2. generation / toluene / 3 h / 100 °C
10.1: 54 percent / DBU / toluene / 18 h / Heating
11.1: 85 percent / hydrogen / PtO2 / ethyl acetate / 4 h
12.1: 61 percent / LHMDS / tetrahydrofuran / 5 h / -78 - -20 °C
13.1: DDQ; H2O / CH2Cl2
With
water; methyllithium; hydrogen; sodium hexamethyldisilazane; tetra-(n-butyl)ammonium iodide; diisobutylaluminium hydride; Dess-Martin periodane; 1,8-diazabicyclo[5.4.0]undec-7-ene; 2,3-dicyano-5,6-dichloro-p-benzoquinone; lithium hexamethyldisilazane; scandium tris(trifluoromethanesulfonate);
platinum(IV) oxide;
In
tetrahydrofuran; dichloromethane; ethyl acetate; N,N-dimethyl-formamide; toluene; benzene;
6.1: Wittig olefination;
DOI:10.1016/j.tetlet.2005.04.040
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1054632-85-7
(4aR,5aS,8S,10S,11aR,12aS)-10-((2R,3S,5R,6S)-5-Benzyloxy-6-benzyloxymethyl-3-hydroxy-tetrahydro-pyran-2-ylmethyl)-2,2-di-tert-butyl-4a,5a,8-trimethyl-octahydro-1,3,5,11-tetraoxa-2-sila-cycloocta[b]naphthalen-9-one
- Guidance literature:
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Multi-step reaction with 14 steps
1.1: 81 percent / H2 / Pd/C / ethyl acetate; methanol
2.1: 92 percent / Sc(OTf)3 / benzene / 1.5 h
3.1: DDQ; H2O / CH2Cl2
4.1: NaHMDS; TBAI / tetrahydrofuran; dimethylformamide
5.1: Sc(OTf)3 / CH2Cl2 / 58 h / 20 °C
5.2: 89 percent / K2CO3; MeOH
6.1: Dess-Martin periodinane / CH2Cl2 / 2 h
7.1: NaHMDS / tetrahydrofuran / 0.67 h / 0 °C
8.1: 88 percent / DIBAL-H / CH2Cl2 / -78 °C
9.1: 80 percent / MeLi / tetrahydrofuran / -78 °C
10.1: Dess-Martin periodinane / CH2Cl2
10.2: 66 percent / Grubbs catalyst 2. generation / toluene / 3 h / 100 °C
11.1: 54 percent / DBU / toluene / 18 h / Heating
12.1: 85 percent / hydrogen / PtO2 / ethyl acetate / 4 h
13.1: 61 percent / LHMDS / tetrahydrofuran / 5 h / -78 - -20 °C
14.1: DDQ; H2O / CH2Cl2
With
water; methyllithium; hydrogen; sodium hexamethyldisilazane; tetra-(n-butyl)ammonium iodide; diisobutylaluminium hydride; Dess-Martin periodane; 1,8-diazabicyclo[5.4.0]undec-7-ene; 2,3-dicyano-5,6-dichloro-p-benzoquinone; lithium hexamethyldisilazane; scandium tris(trifluoromethanesulfonate);
platinum(IV) oxide; palladium on activated charcoal;
In
tetrahydrofuran; methanol; dichloromethane; ethyl acetate; N,N-dimethyl-formamide; toluene; benzene;
7.1: Wittig olefination;
DOI:10.1016/j.tetlet.2005.04.040
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(2R,3S,5R,6S)-5-Benzyloxy-6-benzyloxymethyl-2-((4aR,5aS,10aR,11aS)-2,2-di-tert-butyl-4a,5a-dimethyl-octahydro-1,3,5,8,10-pentaoxa-2-sila-cyclohepta[b]naphthalen-9-ylmethyl)-tetrahydro-pyran-3-ol
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1054632-85-7
(4aR,5aS,8S,10S,11aR,12aS)-10-((2R,3S,5R,6S)-5-Benzyloxy-6-benzyloxymethyl-3-hydroxy-tetrahydro-pyran-2-ylmethyl)-2,2-di-tert-butyl-4a,5a,8-trimethyl-octahydro-1,3,5,11-tetraoxa-2-sila-cycloocta[b]naphthalen-9-one
- Guidance literature:
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Multi-step reaction with 11 steps
1.1: NaHMDS; TBAI / tetrahydrofuran; dimethylformamide
2.1: Sc(OTf)3 / CH2Cl2 / 58 h / 20 °C
2.2: 89 percent / K2CO3; MeOH
3.1: Dess-Martin periodinane / CH2Cl2 / 2 h
4.1: NaHMDS / tetrahydrofuran / 0.67 h / 0 °C
5.1: 88 percent / DIBAL-H / CH2Cl2 / -78 °C
6.1: 80 percent / MeLi / tetrahydrofuran / -78 °C
7.1: Dess-Martin periodinane / CH2Cl2
7.2: 66 percent / Grubbs catalyst 2. generation / toluene / 3 h / 100 °C
8.1: 54 percent / DBU / toluene / 18 h / Heating
9.1: 85 percent / hydrogen / PtO2 / ethyl acetate / 4 h
10.1: 61 percent / LHMDS / tetrahydrofuran / 5 h / -78 - -20 °C
11.1: DDQ; H2O / CH2Cl2
With
water; methyllithium; hydrogen; sodium hexamethyldisilazane; tetra-(n-butyl)ammonium iodide; diisobutylaluminium hydride; Dess-Martin periodane; 1,8-diazabicyclo[5.4.0]undec-7-ene; 2,3-dicyano-5,6-dichloro-p-benzoquinone; lithium hexamethyldisilazane; scandium tris(trifluoromethanesulfonate);
platinum(IV) oxide;
In
tetrahydrofuran; dichloromethane; ethyl acetate; N,N-dimethyl-formamide; toluene;
4.1: Wittig olefination;
DOI:10.1016/j.tetlet.2005.04.040