| 摘要 |
Title cpds of formula (I): (where R1-R3 are H, F, Cl, Br, CH3 or C2H5 and R4 is CH3-C=CH2 in which R5 is H, or C2H5) and their acid addn salts, which are useful e.g. in treating migraine, are prepared by reacting a cpd of formula (II): with Hal-CH2-R4 (where Hal, is Cl, Br or I) or by reacting a cpd of formula (III): with ethylenediamine or its acid addn salts (where A is -CH or -C(Y)=NH in which Y is not >4C alkoxy or alkylthio, or SH or NH2)
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