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Abstract

The invention relates to a group of new 3,4-dehydropiperidine derivatives of the formula ##STR1## wherein R.sub.1 is a hydrogen atom or an alkyl group having 1-3 carbon atoms; Y is a group of the general formula 2 ##STR2## wherein R.sub.2 is a group of the formula --(CH.sub.2).sub.n --C(.dbd.X)--NR.sub.3 R.sub.4, --(CH.sub.2).sub.n --SO.sub.2 --NR.sub.3 R.sub.4, --(CH.sub.2).sub.n --NR.sub.5 --C(.dbd.X)--R.sub.6 or --(CH.sub.2).sub.n --NR.sub.5 --SO.sub.2 --R.sub.6, wherein R.sub.3, R.sub.4 and R.sub.5 independent of each other represent hydrogen or alkyl (1-3C), R.sub.6 is alkyl (1-3C), X represents O or S; n is 0-4, and R is hydrogen or alkyl (1-3C). These compounds have interesting serotonin-1-like (partial) agonistic activity and can be used for the treatment of migraine.

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