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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Sanofi Aventis France
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Roussel Uclaf SA
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Priority claimed from FR707042924Aexternal-prioritypatent/FR2115086B2/fr
Application filed by Roussel Uclaf SAfiledCriticalRoussel Uclaf SA
Publication of ES397447A2publicationCriticalpatent/ES397447A2/en
Organic Low-Molecular-Weight Compounds And Preparation Thereof
(AREA)
Abstract
Improvements introduced in the object of the main patent no. 394,667, requested on august 30, 1971 by "process for the preparation of prostanoic acid derivatives", characterized in that for the derivatives of general formula i '': ** (see formula) ** N being, here and in what follows, an integer equal to 2, 3o4 and m being an integer equal to 3, 4 or 5, bromine is made to act in methanolic medium on the prostatrienoic acid of general formula v: ** (see formula) ** The brominated bromoketal of general formula vii 'is dehydrohydrated with the aid of a dehydrohalogenation agent: ** (see formula) ** The prostatrienoic acid of general formula viii 'is obtained: ** (see formula) ** Of which alpha-tetrahydropyranyloxy is subjected to a hydrolysis in acidic medium to obtain the desired prostanoic acid of formula i ". (Machine-translation by Google Translate, not legally binding)
ES397447A1970-11-301971-11-29Procedure for preparation of prostate acid derivatives. (Machine-translation by Google Translate, not legally binding)
ExpiredES397447A2
(en)
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