摘要 |
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.
|
申请人 |
SCHERING AKTIENGESELLSCHAFT BERLIN UND BERGKAMEN |
发明人 |
SAUER, GERHARD, DR.;BIERE, HELMUT, DR.;HAFFER, GREGOR, DR.;HUTH, ANDREAS, DR. |