Technology Process of (3aS,4S,5E,8S,15E,17aS)-4-(tert-butyldimethylsilyloxy)-11-hydroxy-13-methoxy-2,2,8-trimethyl-7,8,17,17a-tetrahydro-3aH-benzo[c][1,3]dioxolo[4,5-h][1]oxacyclotetradecin-10(4H)-one
There total 1 articles about (3aS,4S,5E,8S,15E,17aS)-4-(tert-butyldimethylsilyloxy)-11-hydroxy-13-methoxy-2,2,8-trimethyl-7,8,17,17a-tetrahydro-3aH-benzo[c][1,3]dioxolo[4,5-h][1]oxacyclotetradecin-10(4H)-one which
guide to synthetic route it.
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synthetic route:
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1605301-81-2
(3aS,4S,5E,8S,15E,17aS)-4-(tert-butyldimethylsilyloxy)-11-hydroxy-13-methoxy-2,2,8-trimethyl-7,8,17,17a-tetrahydro-3aH-benzo[c][1,3]dioxolo[4,5-h][1]oxacyclotetradecin-10(4H)-one
- Guidance literature:
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Multi-step reaction with 11 steps
1: potassium carbonate / acetone / 3 h / Reflux
2: water; potassium hydroxide / ethanol / 2 h / Reflux
3: thionyl chloride; dmap / 1,2-dimethoxyethane / 12 h / 0 - 20 °C
4: N-Bromosuccinimide; 2,2'-azobis(isobutyronitrile) / tetrachloromethane / 1 h / Reflux
5: 1 h / Reflux
6: sodium hexamethyldisilazane / tetrahydrofuran / 2 h / -78 °C
7: pyridine hydrogenfluoride / tetrahydrofuran / 12 h / 0 - 20 °C
8: sodium hydrogencarbonate; Dess-Martin periodane / tetrahydrofuran / 1 h / 0 - 20 °C
9: potassium hexamethylsilazane; 18-crown-6 ether / 1,2-dimethoxyethane / 2 h / -78 °C
10: pyridine hydrogenfluoride / tetrahydrofuran / 2 h / 0 - 20 °C
11: sodium hexamethyldisilazane / tetrahydrofuran / 0.17 h / -10 °C
With
dmap; N-Bromosuccinimide; thionyl chloride; 18-crown-6 ether; 2,2'-azobis(isobutyronitrile); water; sodium hexamethyldisilazane; potassium hexamethylsilazane; sodium hydrogencarbonate; potassium carbonate; Dess-Martin periodane; pyridine hydrogenfluoride; potassium hydroxide;
In
tetrahydrofuran; tetrachloromethane; 1,2-dimethoxyethane; ethanol; acetone;
5: |Michaelis-Arbuzov Synthesis / 8: |Dess-Martin Oxidation / 9: |Julia-Kocienski Olefination;
DOI:10.1016/j.tetlet.2021.153410
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1605301-81-2
(3aS,4S,5E,8S,15E,17aS)-4-(tert-butyldimethylsilyloxy)-11-hydroxy-13-methoxy-2,2,8-trimethyl-7,8,17,17a-tetrahydro-3aH-benzo[c][1,3]dioxolo[4,5-h][1]oxacyclotetradecin-10(4H)-one
- Guidance literature:
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Multi-step reaction with 2 steps
1: tetrabutyl ammonium fluoride / tetrahydrofuran / 20 °C / Inert atmosphere
2: acetyl chloride / methanol / 10 h / Inert atmosphere
With
tetrabutyl ammonium fluoride; acetyl chloride;
In
tetrahydrofuran; methanol;
DOI:10.1002/ejoc.201301613