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Expired
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GB209863A
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DEPUTY MINISTER
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DEPUTY MINISTER
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Publication of GB1032853ApublicationCriticalpatent/GB1032853A/en
C07J9/00—Normal steroids containing carbon, hydrogen, halogen or oxygen substituted in position 17 beta by a chain of more than two carbon atoms, e.g. cholane, cholestane, coprostane
C—CHEMISTRY; METALLURGY
C07—ORGANIC CHEMISTRY
C07J—STEROIDS
C07J75/00—Processes for the preparation of steroids in general
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Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Health & Medical Sciences
(AREA)
General Health & Medical Sciences
(AREA)
Steroid Compounds
(AREA)
Abstract
The invention comprises a process for preparing 24,24 - diphenyl - 3a ,6a - dihydroxy - 24-methoxy-cholane by treating a solution of 24,24 - diphenyl - 3a ,6a ,24 - trihydroxycholane with methanol at temperatures up to the boiling point of methanol and in the presence of an acid catalyst. The solution of starting material may be that obtained by reaction of hyodesoxycholic acid with a phenyl magnesium halide.
A procedure for regeneration and separation of the circulating solution in cycle in the manufacture of oxygenated water (Machine-translation by Google Translate, not legally binding)
Procedure for preparing thermoplastic compounds of high thermal and mechanical properties (Machine-translation by Google Translate, not legally binding)