Phenyldiboronic acid reagents and complexes

Details Phenyldiboronic acid reagents and complexes Phenyldiboronic acid reagents and complexes

1999-09-28

2000-09-26

Raymond, Richard

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

558290, 562 7, C07F 502

Patent

active

061244716

ABSTRACT:
Reagents suitable for the modification of a bioactive species for the purpose of incorporating one or more phenyldiboronic acid (PDBA) moieties for subsequent conjugation to a different (or the same) bioactive species having one or more pendant boronic compound complexing moieties of the general formula of General Formula I, ##STR1## wherein group R is a reactive electrophilic or nucleophilic moiety suitable for reaction of the PDBA reagent with a bioactive species. Group Z is a spacer selected from a saturated or unsaturated chain up to about 0 to 6 carbon equivalents in length, an unbranched saturated or unsaturated chain of from about 6 to 18 carbon equivalents in length with at least one intermediate amide or disulfide moiety, and a polyethylene glycol chain of from about 3 to 12 carbon equivalents in length. Group Q is a linkage that includes one of amide, ether and thioether moieties. Group R is preferably selected from, but not limited to, one of acrylamide, bromo, bromoacetamide, chloro, chloroacetamide, dithiopyridyl, hydrazide, N-hydroxysuccinimidyl ester, N-hydroxysulfo-succinimidyl ester, imidate ester, imidazolide, iodo, iodoacetamide, maleimide, amino and thiol moieties. Group Z is preferably an unbranched alkyl chain of the general formula (CH.sub.2)n, wherein n=1 to 6. Group Q is preferably selected from one of NHCO, CONH, NHCOCH.sub.2, CONHCH.sub.2, O, OCH.sub.2, S and SCH.sub.2 moieties.

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