| 摘要 |
Compounds of general formula (I), wherein R<1 >is selected from phenyl, pyridinyl, thiophenyl, furanyl, imidazolyl and triazolyl; where each R<1 >phenyl ring and R<1 >heteroaromatic ring optionally and independently be further substituted by 1, 2 or 3 substituents selected from straight and branched C1-C6 alkyl, NO2, CF3, C1-C6 alkoxy, chloro, fluoro, bromo, and iodo.
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