Legal status (The legal status 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 status listed.)
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Compania Espanola de Sintesis Quimica SA CESQUISA
Original Assignee
Compania Espanola de Sintesis Quimica SA CESQUISA
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Filing date
Publication date
Application filed by Compania Espanola de Sintesis Quimica SA CESQUISAfiledCriticalCompania Espanola de Sintesis Quimica SA CESQUISA
Priority to ES538537ApriorityCriticalpatent/ES8507154A3/en
Publication of ES538537A0publicationCriticalpatent/ES538537A0/en
Publication of ES8507154A3publicationCriticalpatent/ES8507154A3/en
Cpds. of formula (I) (not given) in which R2 is H or OH, and C9-C11, -C1-C2- and Y are various gps., are made by hydrolysis of 16,17-substd. methylene-dioxy steroids of formula (II) (not given), in which R is H, OH or lower alkanoyloxy, R1 and R2 are H or lower alkyl, by heating to 50-110 deg.C with a 20-60% aq. formic acid soln.
ES538537A1984-12-121984-12-12Hydrolysis of substd. methylene-di:oxy steroid(s)
ExpiredES8507154A3
(en)
Process and reactor for producing a treating aqueous solution containing at least hydrogenoperoxide ions and hydroxyl ions according to predetermined concentrations and use of the reactor
Bis(triphenylphosphine)hydrazinomethoxyrhodium (i) and process for stereospecific reduction of 6-demethyl-6-deoxy-6-methylene-5-hydroxytetracycline acid addition salts