Technology Process of (2R,4S,5R)-2-(4-Methoxy-phenyl)-4-phenyl-oxazolidine-3,5-dicarboxylic acid 3-tert-butyl ester 5-((1S,2S,3R,4R,7S,8S,10R,13S)-4,10-diacetoxy-2-benzoyloxy-1,7-dihydroxy-4,8,12,15,15-pentamethyl-5,9-dioxo-tricyclo[9.3.1.03,8]pentadec-11-en-13-yl) ester
There total 13 articles about (2R,4S,5R)-2-(4-Methoxy-phenyl)-4-phenyl-oxazolidine-3,5-dicarboxylic acid 3-tert-butyl ester 5-((1S,2S,3R,4R,7S,8S,10R,13S)-4,10-diacetoxy-2-benzoyloxy-1,7-dihydroxy-4,8,12,15,15-pentamethyl-5,9-dioxo-tricyclo[9.3.1.03,8]pentadec-11-en-13-yl) ester which
guide to synthetic route it.
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synthetic route:
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892859-34-6
(2R,4S,5R)-2-(4-Methoxy-phenyl)-4-phenyl-oxazolidine-3,5-dicarboxylic acid 3-tert-butyl ester 5-((1S,2S,3R,4R,7S,8S,10R,13S)-4,10-diacetoxy-2-benzoyloxy-1,7-dihydroxy-4,8,12,15,15-pentamethyl-5,9-dioxo-tricyclo[9.3.1.03,8]pentadec-11-en-13-yl) ester
- Guidance literature:
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With
pyridine; hydrogen fluoride;
In
tetrahydrofuran;
at 20 ℃;
for 2h;
DOI:10.1021/ol060531d
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892859-34-6
(2R,4S,5R)-2-(4-Methoxy-phenyl)-4-phenyl-oxazolidine-3,5-dicarboxylic acid 3-tert-butyl ester 5-((1S,2S,3R,4R,7S,8S,10R,13S)-4,10-diacetoxy-2-benzoyloxy-1,7-dihydroxy-4,8,12,15,15-pentamethyl-5,9-dioxo-tricyclo[9.3.1.03,8]pentadec-11-en-13-yl) ester
- Guidance literature:
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Multi-step reaction with 10 steps
1: 76 percent / tetrabutylammonium iodide; boron trifluoride etherate / tetrahydrofuran / 0.33 h / 20 °C
2: 85 percent / H2; pyridine / Pd/C / methanol / 24 h
3: 86 percent / DMSO; trifluoroacetic anhydride; Et3N / CH2Cl2 / 1 h / -60 - -40 °C
4: 68 percent / 4-DMAP / CH2Cl2 / 19 h / 20 °C
5: 88 percent / tetrahydrofuran; hexane / 0.5 h / -72 °C
6: 85 percent / hydrogen fluoride/pyridine; pyridine / tetrahydrofuran / 17 h / 20 °C
7: 58 percent / ZnCl2 / tetrahydrofuran / 0.5 h / 20 °C
8: 20 percent / pyridine; DMAP / 5 h / 60 °C
9: 54 percent / DCC; DMAP / toluene / 10 h / 70 °C
10: 70 percent / hydrogen fluoride/pyridine; pyridine / tetrahydrofuran / 2 h / 20 °C
With
pyridine; dmap; boron trifluoride diethyl etherate; hydrogen fluoride; hydrogen; tetra-(n-butyl)ammonium iodide; dimethyl sulfoxide; triethylamine; dicyclohexyl-carbodiimide; trifluoroacetic anhydride; zinc(II) chloride;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; hexane; dichloromethane; toluene;
DOI:10.1021/ol060531d
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-
892859-34-6
(2R,4S,5R)-2-(4-Methoxy-phenyl)-4-phenyl-oxazolidine-3,5-dicarboxylic acid 3-tert-butyl ester 5-((1S,2S,3R,4R,7S,8S,10R,13S)-4,10-diacetoxy-2-benzoyloxy-1,7-dihydroxy-4,8,12,15,15-pentamethyl-5,9-dioxo-tricyclo[9.3.1.03,8]pentadec-11-en-13-yl) ester
- Guidance literature:
-
Multi-step reaction with 9 steps
1: 85 percent / H2; pyridine / Pd/C / methanol / 24 h
2: 86 percent / DMSO; trifluoroacetic anhydride; Et3N / CH2Cl2 / 1 h / -60 - -40 °C
3: 68 percent / 4-DMAP / CH2Cl2 / 19 h / 20 °C
4: 88 percent / tetrahydrofuran; hexane / 0.5 h / -72 °C
5: 85 percent / hydrogen fluoride/pyridine; pyridine / tetrahydrofuran / 17 h / 20 °C
6: 58 percent / ZnCl2 / tetrahydrofuran / 0.5 h / 20 °C
7: 20 percent / pyridine; DMAP / 5 h / 60 °C
8: 54 percent / DCC; DMAP / toluene / 10 h / 70 °C
9: 70 percent / hydrogen fluoride/pyridine; pyridine / tetrahydrofuran / 2 h / 20 °C
With
pyridine; dmap; hydrogen fluoride; hydrogen; dimethyl sulfoxide; triethylamine; dicyclohexyl-carbodiimide; trifluoroacetic anhydride; zinc(II) chloride;
palladium on activated charcoal;
In
tetrahydrofuran; methanol; hexane; dichloromethane; toluene;
DOI:10.1021/ol060531d