摘要 |
This invention is concerned with novel compounds represented by structural formula I <IMAGE> FORMULA I where R1 is <IMAGE> X and Y are independently hydrogen, fluoro, chloro, bromo, iodo, or trifluoromethyl; n is 0, 1 or 2; and R2 is hydrogen, fluoro, chloro, bromo, iodo, or trifluoromethyl, methyl, or methoxy; as the racemates, mixtures of enantiomers, individual diastereomers or individual enantiomers, and pharmaceutically acceptable crystal forms, salts, or hydrates thereof.
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