ES324203A1 - Procedure for the manufacture of beta-carboline derivatives. (Machine-translation by Google Translate, not legally binding)
- Google Patents
Procedure for the manufacture of beta-carboline derivatives. (Machine-translation by Google Translate, not legally binding)
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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Imperial Chemical Industries Ltd
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Imperial Chemical Industries Ltd
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Priority to ES0324203ApriorityCriticalpatent/ES324203A1/en
Publication of ES324203A1publicationCriticalpatent/ES324203A1/en
Process of manufacture of derivatives β -carbolines, of formulas ** (See formula) ** wherein R1 represents an alkyl radical of not more than 8 carbon atoms, or a cycloalkyl or bicycloalkenyl radical, or an aryl radical discretionally substituted by one or more radicals selected from the alkyl, alkoxy, alkoxycarbonyl, hydroxyl and amino radicals, or a heterocyclic radical, and R2 represents hydrogen; or wherein R1 and R2, together with the adjacent carbon atom of the β -carbon nucleus, form a carbocyclic ring; wherein R3 represents hydrogen or an alkyl radical; and wherein the benzene ring A may also be optionally substituted by an alkyl radical; characterized in that a compound of the formula is cyclized: ** (See formula) ** wherein R1, R2, R3 and a have the meanings indicated above; or for those of the derivatives - β -carbolines in which R2 represents hydrogen, a dihydro- β -carbolino derivative of the formula: ** (See formula) ** wherein R1, R3 and A have the meanings indicated above, is reduced; or for those of the derivatives β -carbolines in which R2 represents hydrogen, a carboxylic acid of the formula: ** (See formula) ** wherein R1, R3 and A, have the meanings indicated above, is decarboxylated. (Machine-translation by Google Translate, not legally binding)
ES0324203A1966-03-151966-03-15Procedure for the manufacture of beta-carboline derivatives. (Machine-translation by Google Translate, not legally binding)
ExpiredES324203A1
(en)
Procedure for the preparation of substitute 2- (2º-hydroxypenyl) -benzo-triazol compounds (Machine-translation by Google Translate, not legally binding)
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