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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Sandoz AG
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Sandoz AG
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Publication date
Priority claimed from CH1826271Aexternal-prioritypatent/CH564556A5/en
Application filed by Sandoz AGfiledCriticalSandoz AG
Publication of ES402823A1publicationCriticalpatent/ES402823A1/en
Procedure for obtaining ergolene derivatives of formula I **(See formula)** wherein each of the radicals R1 and R2 is, independently, hydrogen or alkyl of 1 to 4 carbon atoms or R1 and R2 together form an algylene chain of at most 5 carbon atoms, characterized in that it comprises reacting a formula III amine **(See formula)** where R1 and R2 signify as before, with an isocyanate of the formula **(See formula)** in an aprotic solvent, preferably benzene, chloroform, at a temperature conveniently from 50 to 80ºC, preferably using a slight excess of the compound of formula III. (Machine-translation by Google Translate, not legally binding)
ES402823A1971-05-191972-05-17Procedure for obtaining ergoline derivatives. (Machine-translation by Google Translate, not legally binding)
ExpiredES402823A1
(en)