Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...
Reexamination Certificate
2006-11-02
2009-02-10
Kifle, Bruck (Department: 1624)
Drug, bio-affecting and body treating compositions
Designated organic active ingredient containing
Heterocyclic carbon compounds containing a hetero ring...
C514S229500, C514S252100, C540S458000
Reexamination Certificate
active
07488726
ABSTRACT:
The present invention features rifamycin analogs that can be used as therapeutics for treating or preventing a variety of microbial infections. In one form, the analogs are acetylated at the 25-position, as is rifamycin. In another form, the analogs are deacetylated at the 25-position. In yet other forms, benzoxazinorifamycin, benzthiazinorifamycin, and benzdiazinorifamycin analogs are derivatized at various positions of the benzene ring, including 3′-hydroxy analogs, 5′-halo and/or alkoxy analogs, and various 4′- and/or 6′-substituents that incorporate a cyclic amine moiety.
REFERENCES:
patent: 2004/0188176 (2004-09-01), Townsend et al.
patent: 2005/0043298 (2005-02-01), Van Duzer et al.
Siedlecki James M.
Van Duzer John H.
Yu Xiang Y.
ActivBiotics Pharma, LLC
Bradin David
Intellectual Property / Technology Law
Kifle Bruck
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