| 摘要 |
2115848 9308164 PCTABS00021 Novel substituted heterocyclic derivatives having general formula (I), are provided, in which e.g. R2 is selected from monocyclic, bicyclic or tricyclic heterocyclyl radicals in which 1 to about 3 heteroatoms are independently selected from oxygen, nitrogen and sulfur, which are optionally substituted with hydroxyl, lower alkoxy, lower alkyl, halogen, nitro, carboxyl, sulfonyl, trifluoromethyl, amino, acyloxy, phenyl and naphthyl which are optionally substituted with halogen, nitro, lower alkoxy, and lower alkyl; the invention also pertains to pharmaceutical compositions comprising such derivatives.
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