申请人:Schering Aktiengesellschaft
公开号:US04968801A1
公开(公告)日:1990-11-06
Ergoline derivatives of general Formula I ##STR1## wherein C.sub.8 C.sub.9 and C.sub.9 C.sub.10 are both CC-single bonds or one is a C.dbd.C-double bond, R.sup.6 is C.sub.1-4 alkyl, R.sup.8 is methyl, hydroxymethyl, carbonylmethoxy, ureido or N,N-diethylureido, each in the .alpha.- or .beta.-position, and R is hydrogen or nitro, are prepared by dehydrogenation of corresponding 2,3-dihydroergoline derivatives using an electrophilic reagent in an apolar solvent and a base.
通式I的Ergoline衍生物 ##STR1## 其中C.sub.8 C.sub.9和C.sub.9 C.sub.10都是CC-单键或其中一个是C.dbd.C-双键,R.sup.6是C.sub.1-4烷基,R.sup.8是甲基,羟甲基,羰基甲氧基,尿素基或N,N-二乙基尿素基,均在.alpha.-或.beta.-位置,而R是氢或硝基,通过在非极性溶剂和碱的存在下使用亲电试剂对应的2,3-二氢麦角酸衍生物进行脱氢制备。