The present invention relates to compounds of formula I:
or a pharmaceutically acceptable acid addition salt thereof, where;
X is —C(R
4
)═ or —N═; Ar is phenyl, substituted phenyl, heterocycle, or substituted heterocycle;
R
1
and R
2
are independently hydrogen or C
1
-C
3
alkyl;
R
3
is hydrogen, fluoro, or methyl;
when X is —C(R
4
)═, R
4
is hydrogen, fluoro, or methyl, provided that no more than one of R
3
and R
4
may be other than hydrogen; and
R
5
is hydrogen, methyl, or ethyl. The compounds of the present invention are useful for activating 5-HT
1F
receptors, inhibiting dural protein extravasation, and for the treatment or prevention of migraine in a mammal.
本发明涉及式I的化合物或其药学上可接受的酸加成盐,其中:X为—C(R4)═或—N═;Ar为
苯基,取代
苯基,杂环或取代的杂环;R1和R2独立地为
氢或C1-C3烷基;R3为
氢,
氟或
甲基;当X为—C(R4)═时,R4为
氢,
氟或
甲基,但R3和R4中最多只能有一个不是
氢;且R5为
氢,
甲基或乙基。本发明的化合物可用于激活5-HT1F受体,抑制硬脑膜蛋白外渗,并用于哺乳动物偏头痛的治疗或预防。