Technology Process of (2S,3S,3aS,8aR)-2-Benzyloxymethyl-2,6,6-trimethyl-2,3,6,7,8,8a-hexahydro-5H-furo[2,3,4-de]chromene-3,3a-diol
There total 17 articles about (2S,3S,3aS,8aR)-2-Benzyloxymethyl-2,6,6-trimethyl-2,3,6,7,8,8a-hexahydro-5H-furo[2,3,4-de]chromene-3,3a-diol which
guide to synthetic route it.
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synthetic route:
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444809-24-9
(2S,3S,8aR)-2-Benzyloxymethyl-5-(3,4-dimethoxy-benzyloxymethyl)-3-hydroxy-2,6,6-trimethyl-2,3,6,7,8,8a-hexahydro-chromen-4-one
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444809-25-0
(2S,3S,3aS,8aR)-2-Benzyloxymethyl-2,6,6-trimethyl-2,3,6,7,8,8a-hexahydro-5H-furo[2,3,4-de]chromene-3,3a-diol
- Guidance literature:
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With
2,3-dicyano-5,6-dichloro-p-benzoquinone;
In
dichloromethane; water;
at 0 - 20 ℃;
for 0.333333h;
DOI:10.1021/ol026159t
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444809-25-0
(2S,3S,3aS,8aR)-2-Benzyloxymethyl-2,6,6-trimethyl-2,3,6,7,8,8a-hexahydro-5H-furo[2,3,4-de]chromene-3,3a-diol
- Guidance literature:
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Multi-step reaction with 12 steps
1.1: 78 percent / n-BuLi / tetrahydrofuran / 0.5 h / -78 °C
2.1: 90 percent / PCC / CH2Cl2 / 12 h / 20 °C
3.1: 60 percent / pyridinium tribromide; pyridine / CH2Cl2 / 20 h / 20 - 40 °C
4.1: 92 percent / (S)-CBS; BH3*THF / tetrahydrofuran / 2 h / 20 °C
5.1: 85 percent / imidazole / dimethylformamide / 2 h / 20 - 40 °C
6.1: 70 percent / MgBr2*Et2O; BuSH / diethyl ether / 12 h / 20 °C
7.1: 95 percent / NaH / tetrahydrofuran / 8 h / 20 °C
8.1: t-BuLi / diethyl ether / 0.5 h / -78 °C
8.2: 60 percent / TMEDA / 0.5 h / -78 °C
9.1: 90 percent / Dess-Martin periodinane; NaHCO3 / CH2Cl2 / 2 h / 20 °C
10.1: 90 percent / TBAF / tetrahydrofuran / 0.5 h / 0 °C
11.1: 77 percent / aq. HCl / propan-2-ol / 3 h / 0 - 20 °C
12.1: 60 percent / DDQ / CH2Cl2; H2O / 0.33 h / 0 - 20 °C
With
pyridine; 1H-imidazole; hydrogenchloride; n-butyllithium; borane-THF; (S)-diphenylprolinol; n-butanethiol; tetrabutyl ammonium fluoride; tert.-butyl lithium; sodium hydride; sodium hydrogencarbonate; Dess-Martin periodane; pyridinium hydrobromide perbromide; pyridinium chlorochromate; 2,3-dicyano-5,6-dichloro-p-benzoquinone; magnesium bromide;
In
tetrahydrofuran; diethyl ether; dichloromethane; water; N,N-dimethyl-formamide; isopropyl alcohol;
DOI:10.1021/ol026159t
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444809-25-0
(2S,3S,3aS,8aR)-2-Benzyloxymethyl-2,6,6-trimethyl-2,3,6,7,8,8a-hexahydro-5H-furo[2,3,4-de]chromene-3,3a-diol
- Guidance literature:
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Multi-step reaction with 7 steps
1.1: 92 percent / TBHP; (-)-DIPT; Ti(O-i-Pr)4 / CH2Cl2 / 3 h / -18 °C
2.1: 75 percent / Pyr*SO3; Et3N; DMSO / CH2Cl2 / 1 h / 0 °C
3.1: t-BuLi / diethyl ether / 0.5 h / -78 °C
3.2: 60 percent / TMEDA / 0.5 h / -78 °C
4.1: 90 percent / Dess-Martin periodinane; NaHCO3 / CH2Cl2 / 2 h / 20 °C
5.1: 90 percent / TBAF / tetrahydrofuran / 0.5 h / 0 °C
6.1: 77 percent / aq. HCl / propan-2-ol / 3 h / 0 - 20 °C
7.1: 60 percent / DDQ / CH2Cl2; H2O / 0.33 h / 0 - 20 °C
With
titanium(IV) isopropylate; hydrogenchloride; tert.-butylhydroperoxide; tetrabutyl ammonium fluoride; tert.-butyl lithium; sulfur trioxide pyridine complex; sodium hydrogencarbonate; D-(-)-diisopropyl tartrate; Dess-Martin periodane; dimethyl sulfoxide; triethylamine; 2,3-dicyano-5,6-dichloro-p-benzoquinone;
In
tetrahydrofuran; diethyl ether; dichloromethane; water; isopropyl alcohol;
DOI:10.1021/ol026159t