| 摘要 |
Title compds. (I, R1 = H, F, Cl, Br, I, CN; R2 = F, C1-5 alkyl hydroxyalkyl, aminoalkyl, CF3, alkoxy, nitro, CN, carbalkoxy, carbamoyl, COOH; R3 = H, C1-6 alkyl, hydroxyalkyl, cycloalkyl, alkenyl, substituted aralkyl) and their acid salt having pharmaceutical properties and suspected or protective activity against β-acceptor were prepd. by hydrolysis of oxazlidone(II) at 0-110≦̸C in the presence of HCl, H2SO4, NaOH, KoH in solvent such as H2O, MeOH, EtOH, acetic anhydride.
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