发明授权
US5430162A 7-(substituted)-8-(substituted)-9-substituted amino)-6-demethyl-6-deoxytetracyclines 失效
7-(取代的)-8-(取代的)-9-取代的氨基)-6-脱甲基-6-脱氧四环素

7-(substituted)-8-(substituted)-9-substituted
amino)-6-demethyl-6-deoxytetracyclines
摘要:
The invention provides compounds of formula ##STR1## wherein X, R and R.sup.1 are defined in the specification. These compounds are useful as antibiotic agents.
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