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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Novartis AG
BASF Schweiz AG
Original Assignee
Ciba Geigy AG
Ciba AG
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Publication date
Priority claimed from CH627863Aexternal-prioritypatent/CH429715A/en
Application filed by Ciba Geigy AG, Ciba AGfiledCriticalCiba Geigy AG
Publication of ES299886A1publicationCriticalpatent/ES299886A1/en
Process for obtaining 4-halogenrostenes of general formula I ** (See formula) ** where R1 represents a hydrogen atom or a methyl group, Hal a fluorine, chlorine or bromine atom, R2 a hydrogen atom, a low hydrocarbon residue, the tetrahydropyranyl radical or an acyl radical with 1-18 carbon atoms and R3 a hydrogen atom or a low aliphatic hydrocarbon residue, characterized in that the compounds of formula II ** (See formula) ** they are epoxidized and the 4,5-epoxides obtained are dissociated with halogen-hydrogen or with means which cements this or the compounds of formula II, they are halogenated or the acyl derivatives of the compounds of formula II are halogenated and the compounds Δ The obtained 4-halogenics are isomerized and, if desired, in the obtained compounds an existing 17β-β-hydroxy group is esterified or etherified according to known methods. (Machine-translation by Google Translate, not legally binding)
ES299886A1963-05-171964-05-16Procedure for the obtaining of new 4-halogen-androstens (Machine-translation by Google Translate, not legally binding)
ExpiredES299886A1
(en)
A method to produce new derivatives of indolilalcohil guanidine and salts from themselves (Machine-translation by Google Translate, not legally binding)