| 摘要 |
A compound of formula (I):where: R=H, Cl, Br, F, I, C1-C4 alkoxy, C1-C4 alkylthio, C1-C4 alkyl, or C5-C6 cycloalkyl; R1 =C1-C4 dialkylamine, where the alkyl groups are the same or different from one another, 4-alkyl-1-piperazinyl, 4-hydroxyalkyl-1-piperazinyl, 1-imidazolyl, 4-alkyl-1-piperidinyl, or 4-alkyl-1-homopiperazinyl; R2 =H, C1-C4 alkoxy, C1-C4 alkylthio, C1-C4 alkyl, CHO, or CH=NOH; R3 =H, CHO; or the pharmaceutically acceptable salts thereof.
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