VERFAHREN ZUR HERSTELLUNG VON VINCAMIN

In the title process epivincamine (II) or mixts. of (II) and vincamine (I) (prepd. by known methods) are treated in soln. with a cpd. contng. a metal of Group IA, IB, IIA, IIB, IVB, VIB, VIIB or VIII. Thus, (II) epivincamine refluxed with Ag2CO3 on "Celite" (RTM) in xylene gave (+)(I) in g...

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Hauptverfasser: SZANTAY CSABAÖ DR, KALAUS GYORGY DR, SIMONIDESZ VILMOS, SZABO LAJOSÖ DR
Format: Patent
Sprache:ger
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Zusammenfassung:In the title process epivincamine (II) or mixts. of (II) and vincamine (I) (prepd. by known methods) are treated in soln. with a cpd. contng. a metal of Group IA, IB, IIA, IIB, IVB, VIB, VIIB or VIII. Thus, (II) epivincamine refluxed with Ag2CO3 on "Celite" (RTM) in xylene gave (+)(I) in good yield. (I) is a vasodilator.