Antibacterial agents

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Heterocyclic carbon compounds containing a hetero ring...

Reexamination Certificate

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Details

C546S188000, C546S193000, C546S196000, C546S207000, C546S214000, C546S221000, C544S129000, C544S133000, C514S237200, C514S256000, C514S337000, C514S318000, C514S336000, C514S320000

Reexamination Certificate

active

10953788

ABSTRACT:
Compounds of formula (II) are antibacterial agents wherein Q represents a radical of the formula: —N(OH)CH(═O) or the formula: —C(═O)NH(OH); R1represents hydrogen, C1–C6alkyl or C1–C6alkyl substituted by one or more halogen atoms, or, except when Q is a radical of the formula: —N(OH)CH(═O), a hydroxy, C1–C6alkoxy, C1–C6alkenyloxy, amino, C1–C6alkylamino, or di-(C1–C6alkyl)amino group; R2represents a substituted or unsubstituted C1–C6alkyl, cycloalkyl(C1–C6alkyl)- or aryl(C1–C6alkyl)-group; and A represents a group of formula (IIA), or (IIB) wherein R4represents the side chain of a natural or non-natural alpha amino acid, and R5and R6when taken together with the nitrogen atom to which they are attached form a saturated heterocyclic first ring of 5 to 7 atoms as specified in the description.

REFERENCES:
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Bouboutou, et al.: “Inhibition of porcine synovial collengenase by actinonin and derivatives” Colloq. Inserm., vol. 174, 1989, pp. 341-344, XP000978992, Table I, Actinonin 2.
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