Process for the preparation of azithromycin monohydrate isopropanol clathrate

Process for the preparation of azithromycin monohydrate isopropanol clathrate

The present invention relates to an improved, cost effective and easy process for the preparation of azithromycin monohydrate isopropanol clathrate. The process provides a one-step method of preparing azithromycin monohydrate isopropanol clathrate directly from 9-deoxo-9a-aza-9a-homoerythromycin A....

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: MISTRY DHIREN N, KANSAL VINOD K, SONI KAMLESH S, THORAT MAHADEO M
Format: Patent
Sprache:eng
Schlagworte:
CHEMISTRY
DERIVATIVES THEREOF
HUMAN NECESSITIES
HYGIENE
MEDICAL OR VETERINARY SCIENCE
METALLURGY
NUCLEIC ACIDS
NUCLEOSIDES
NUCLEOTIDES
ORGANIC CHEMISTRY
PREPARATIONS FOR MEDICAL, DENTAL, OR TOILET PURPOSES
SUGARS
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Beschreibung
Zusammenfassung:The present invention relates to an improved, cost effective and easy process for the preparation of azithromycin monohydrate isopropanol clathrate. The process provides a one-step method of preparing azithromycin monohydrate isopropanol clathrate directly from 9-deoxo-9a-aza-9a-homoerythromycin A. The process comprises at least partial dissolution and/or suspension of 9-deoxo-9a-aza-9a homoerythromycin A in isopropanol to form a mixture, adding methylating solution to the said mixture, refluxing or heating said mixture to form a reaction mixture, adding alkaline solution to the reaction mixture to adjust pH from about 10 to about 11 and isolating pure azithromycin monohydrate isopropanol clathrate. The process helps in reducing the total time of preparation, total utility cost for the production and also helps to avoid handling loss.