| 摘要 |
PCT No. PCT/IB98/00661 Sec. 371 Date Jul. 20, 1999 Sec. 102(e) Date Jul. 20, 1999 PCT Filed May 1, 1998 PCT Pub. No. WO98/51696 PCT Pub. Date Nov. 19, 1998The invention relates to compounds of the formula: and to pharmaceutically acceptable salts thereof, wherein R and Z are as defined herein. The invention also relates to pharmaceutical compositions containing the compounds of formula I, methods of using said compounds of formula I in the treatment of infections and methods of preparing said compounds of formula I.
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