MANUFACTURE OF ERGOLINE DERIVATIVE

1. A process for the production of ergoline derivatives of the general formula I see diagramm : EP0190534,P5,F1 wherein C8 _-_-_-_-_-_-_- C9 and C9 _-_-_-_-_-_-_- C10 are each a CC-single bond or each is a separate C = C-double bond, R**6 is C1-4 alkyl, R**8 is methyl, hydroxymethyl, carbonylmethoxy...

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Hauptverfasser: ANDOREASU FUUTO, GUREGOORU HAFUAA, GERUHARUTO ZAUAA, HERUMUUTO BIIRE
Format: Patent
Sprache:eng
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Zusammenfassung:1. A process for the production of ergoline derivatives of the general formula I see diagramm : EP0190534,P5,F1 wherein C8 _-_-_-_-_-_-_- C9 and C9 _-_-_-_-_-_-_- C10 are each a CC-single bond or each is a separate C = C-double bond, R**6 is C1-4 alkyl, R**8 is methyl, hydroxymethyl, carbonylmethoxy, ureido or N,N-diethylureido, each in the alpha- or beta-configuration, and R is hydrogen or nitro, characterised in that a 2,3-dihydroergoline derivative of the general formula II see diagramm : EP0190534,P5,F2 wherein C8 _-_-_-_-_-_-_- C9 and C9 _-_-_-_-_-_-_- C10 and also R**6 , R**8 and R have the meanings indicated above, it being possible for the hydrogen in the 3-position to have the alpha- or beta-configuration, is reacted with an electrophilic reagent in an apolar solvent and with a base at temperatures of from -70 to 30 degrees C.