Technology Process of (2S,3S,4S,5R,6S)-4,5-Bis-benzoyloxy-3-[(2R,4aR,6S,7R,8R,8aS)-8-(2-chloro-acetoxy)-2-phenyl-7-(2,2,2-trichloro-acetylamino)-hexahydro-pyrano[3,2-d][1,3]dioxin-6-yloxy]-6-(4-methoxy-phenoxy)-tetrahydro-pyran-2-carboxylic acid methyl ester
There total 6 articles about (2S,3S,4S,5R,6S)-4,5-Bis-benzoyloxy-3-[(2R,4aR,6S,7R,8R,8aS)-8-(2-chloro-acetoxy)-2-phenyl-7-(2,2,2-trichloro-acetylamino)-hexahydro-pyrano[3,2-d][1,3]dioxin-6-yloxy]-6-(4-methoxy-phenoxy)-tetrahydro-pyran-2-carboxylic acid methyl ester which
guide to synthetic route it.
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synthetic route:
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181584-00-9
(2S,3S,4S,5R,6S)-4,5-Bis-benzoyloxy-3-[(2R,4aR,6S,7R,8R,8aS)-8-(2-chloro-acetoxy)-2-phenyl-7-(2,2,2-trichloro-acetylamino)-hexahydro-pyrano[3,2-d][1,3]dioxin-6-yloxy]-6-(4-methoxy-phenoxy)-tetrahydro-pyran-2-carboxylic acid methyl ester
- Guidance literature:
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Multi-step reaction with 4 steps
1: 71 percent / p-toluenesulfonic acid monohydrate / 0.5 h / 110 °C
2: NaOMe / methanol / 1 h / Ambient temperature
3: 1.) dibutyltin oxide, 2.) triethylamine / 1.) benzene, reflux, 20 h, 2.) THF, room temperature, 1 h
4: 1.) molecular sieves 4A, 2.) trimethylsilyl triflate / 1.) CH2Cl2, room temperature, 30 min, 2.) CH2Cl2, toluene, room temperature, 30 min
With
trimethylsilyl trifluoromethanesulfonate; 4 A molecular sieve; sodium methylate; di(n-butyl)tin oxide; toluene-4-sulfonic acid; triethylamine;
In
methanol;
DOI:10.1016/0008-6215(96)00085-7
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181584-00-9
(2S,3S,4S,5R,6S)-4,5-Bis-benzoyloxy-3-[(2R,4aR,6S,7R,8R,8aS)-8-(2-chloro-acetoxy)-2-phenyl-7-(2,2,2-trichloro-acetylamino)-hexahydro-pyrano[3,2-d][1,3]dioxin-6-yloxy]-6-(4-methoxy-phenoxy)-tetrahydro-pyran-2-carboxylic acid methyl ester
- Guidance literature:
-
Multi-step reaction with 3 steps
1: NaOMe / methanol / 1 h / Ambient temperature
2: 1.) dibutyltin oxide, 2.) triethylamine / 1.) benzene, reflux, 20 h, 2.) THF, room temperature, 1 h
3: 1.) molecular sieves 4A, 2.) trimethylsilyl triflate / 1.) CH2Cl2, room temperature, 30 min, 2.) CH2Cl2, toluene, room temperature, 30 min
With
trimethylsilyl trifluoromethanesulfonate; 4 A molecular sieve; sodium methylate; di(n-butyl)tin oxide; triethylamine;
In
methanol;
DOI:10.1016/0008-6215(96)00085-7
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-
181584-00-9
(2S,3S,4S,5R,6S)-4,5-Bis-benzoyloxy-3-[(2R,4aR,6S,7R,8R,8aS)-8-(2-chloro-acetoxy)-2-phenyl-7-(2,2,2-trichloro-acetylamino)-hexahydro-pyrano[3,2-d][1,3]dioxin-6-yloxy]-6-(4-methoxy-phenoxy)-tetrahydro-pyran-2-carboxylic acid methyl ester
- Guidance literature:
-
Multi-step reaction with 4 steps
1: 71 percent / p-toluenesulfonic acid monohydrate / 0.5 h / 110 °C
2: NaOMe / methanol / 1 h / Ambient temperature
3: 1.) dibutyltin oxide, 2.) triethylamine / 1.) benzene, reflux, 20 h, 2.) THF, room temperature, 1 h
4: 1.) molecular sieves 4A, 2.) trimethylsilyl triflate / 1.) CH2Cl2, room temperature, 30 min, 2.) CH2Cl2, toluene, room temperature, 30 min
With
trimethylsilyl trifluoromethanesulfonate; 4 A molecular sieve; sodium methylate; di(n-butyl)tin oxide; toluene-4-sulfonic acid; triethylamine;
In
methanol;
DOI:10.1016/0008-6215(96)00085-7