CH571064A5 - Recovery of rieamycin from broths - by oxidn to an insol form - Google Patents

Recovery of rieamycin from broths - by oxidn to an insol form

Info

Publication number
CH571064A5
CH571064A5 CH301073A CH301073A CH571064A5 CH 571064 A5 CH571064 A5 CH 571064A5 CH 301073 A CH301073 A CH 301073A CH 301073 A CH301073 A CH 301073A CH 571064 A5 CH571064 A5 CH 571064A5
Authority
CH
Switzerland
Prior art keywords
insol
rieamycin
oxidn
broths
recovery
Prior art date
Application number
CH301073A
Original Assignee
Archifar Ind Chim Trentino
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Archifar Ind Chim Trentino filed Critical Archifar Ind Chim Trentino
Priority to CH301073A priority Critical patent/CH571064A5/en
Publication of CH571064A5 publication Critical patent/CH571064A5/en

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07D—HETEROCYCLIC COMPOUNDS
    • C07D498/00—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms
    • C07D498/02—Heterocyclic compounds containing in the condensed system at least one hetero ring having nitrogen and oxygen atoms as the only ring hetero atoms in which the condensed system contains two hetero rings
    • C07D498/08—Bridged systems

Abstract

Rifamycin B in a fermentation broth is oxidised with NaNO2, NaS2O3 or H2O at 15-25 degrees C and pH 4-75 and the insol rifamycin O recovered. An example uses NaNO2 to give rifamycin O of 95% purity/after recrystallisation) in substantially quantitative yields.
CH301073A 1973-03-01 1973-03-01 Recovery of rieamycin from broths - by oxidn to an insol form CH571064A5 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CH301073A CH571064A5 (en) 1973-03-01 1973-03-01 Recovery of rieamycin from broths - by oxidn to an insol form

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH301073A CH571064A5 (en) 1973-03-01 1973-03-01 Recovery of rieamycin from broths - by oxidn to an insol form

Publications (1)

Publication Number Publication Date
CH571064A5 true CH571064A5 (en) 1975-12-31

Family

ID=4246596

Family Applications (1)

Application Number Title Priority Date Filing Date
CH301073A CH571064A5 (en) 1973-03-01 1973-03-01 Recovery of rieamycin from broths - by oxidn to an insol form

Country Status (1)

Country Link
CH (1) CH571064A5 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITMI20090653A1 (en) * 2009-04-20 2010-10-21 Alfa Wassermann Spa NEW FRENCH DERIVATIVES
US8518949B2 (en) 2005-03-03 2013-08-27 Alfa Wassermann S.P.A. Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
US9452157B2 (en) 2012-07-06 2016-09-27 Alfa Wassermann S.P.A Pharmaceutical compositions comprising rifaximin and amino acids, preparation methods and use thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8518949B2 (en) 2005-03-03 2013-08-27 Alfa Wassermann S.P.A. Polymorphous forms of rifaximin, processes for their production and use thereof in the medicinal preparations
ITMI20090653A1 (en) * 2009-04-20 2010-10-21 Alfa Wassermann Spa NEW FRENCH DERIVATIVES
WO2010122436A1 (en) * 2009-04-20 2010-10-28 Alfa Wassermann S.P.A. Rifamycin derivatives
JP2012524060A (en) * 2009-04-20 2012-10-11 アルファ ワッセルマン ソシエタ ペル アチオニ Rifamycin derivative
US8318763B2 (en) 2009-04-20 2012-11-27 Alfa Wassermann S.P.A. Rifamycin derivatives
EA020201B1 (en) * 2009-04-20 2014-09-30 Альфа Вассерманн С.П.А. Rifamycin derivatives
US9452157B2 (en) 2012-07-06 2016-09-27 Alfa Wassermann S.P.A Pharmaceutical compositions comprising rifaximin and amino acids, preparation methods and use thereof

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Legal Events

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