PREPARING STEROIDS IN MICROPARTICULATE FORM

The present invention relates to a method of preparing steroid compounds in a form having a particle size within a desired and specific range. The compounds prepared by the method of the invention are those having a basic ring structure of the general formula: wherein X represents the remainder of a...

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Bibliographic Details
Main Authors DEREK CHARLES RILEY, DAVID JOHNSTON
Format Patent
LanguageEnglish
Published 05.06.1985
Edition4
Subjects
CHEMISTRY
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
STEROIDS
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Summary:The present invention relates to a method of preparing steroid compounds in a form having a particle size within a desired and specific range. The compounds prepared by the method of the invention are those having a basic ring structure of the general formula: wherein X represents the remainder of a heterocyclic ring, in particular a 5-membered ring having at least 2 heteroatoms, and the method comprises dissolving the compound in an organic solvent, precipitating the compound by mixing a non-solvent for the compound with the said solution, and controlling the mixing conditions to produce a precipitate having the desired reduced particle size.
Bibliography:Application Number: GB19840027300