Patent ID: 7186739

Claim:
A compound of the formula (III bis) wherein: I) “n” is a whole number from 1 to 10; III) Y is an amino acid or a chain of amino acids having the following formula: A-[N(Z k )—C(Z′ k )(Z″ k )—CO—] m “m” is a whole number varying from 1 to 50; A is a group selected from the group consisting of: hydrogen, an oxycarbonyl group ROCO, an acyl group RCO, an alkyl group of 1 to 20 carbons, unsubstituted or substituted with an aryl group whose cyclic structure contains 5 to 20 carbon atoms, said alkyl group being saturated or not, an aryl group, whose cyclic structure contains 5 to 20 carbon atoms, an urea group RNHCO, A along with Z k and the N with which it is contiguous are bonded to form a phthalimido group of formula: and the group “A” can form with the nitrogen atom N with which it is contiguous, an amine; R representing an alkyl group of 1 to 20 carbon atoms, unsubstituted or substituted with an aryl group whose cyclic structure contains 5 to 20 carbon atoms, said alkyl group being saturated or not; Z k , Z′ k , and Z″ k are inependently selected from the group consisting of hydrogen atom, a (C1–C20) alkyl group substituted or not, an aryl group, whose cyclic structure contains 5 to 20 carbon atoms, a protected or unprotected side chain of an amino acid, and a halogen; IV) R 1 represents a hydrogen atom, a (C1–C20) alkyl group substituted or not, or an aryl group whose cyclic structure contains 5 to 20 atoms; V) R i represents a group that can vary independently from each other a member selected from the group consisting of a hydrogen atom, a halogen, the protected or unprotected side chain of an amino acid, a (C1–C20) alkyl group substituted or not, an aryl group whose cyclic structure contains 5 to 20 carbon atoms, a group OR a , NH 2 , OH, —COOR a , —CONHR a , —CONH 2 , —CH 2 COOR a , —CH 2 CONHR a , —CH 2 CONH 2 ; R a represents an allyl, benzyl, t-butyl, fluorenylmethyl, alkyl having 1 to 20 carbon atoms, or an aryl group whose cyclic structure contains 5 to 20 carbon atoms; and VI) X is derived from N-hydroxysuccinimide.