Drug targeting

Drug – bio-affecting and body treating compositions – Designated organic active ingredient containing – Having -c- – wherein x is chalcogen – bonded directly to...

Reexamination Certificate

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Details

C514S396000, C514S385000, C514S398000, C514S655000, C514S650000, C514S654000, C514S659000

Reexamination Certificate

active

06881748

ABSTRACT:
A bioreductive conjugate comprises a bioreductive moiety with at least one therapeutic agent linked thereto and physiologically acceptable derivatives thereof. The bioreductive moiety incorporates an aromatic ring substituted with a nitro group and the conjugate is such that bioreduction of the nitro group causes release of the therapeutic agent by a through bond elimination and the residue of the bioreductive moiety to undergo an intramolecular cyclization reaction in which the nitrogen of the original nitro group provides an atom of the thus formed ring.

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