摘要:
The present invention relates to the field of molecular imaging, i.e. nuclear and fluorescent imaging using metal ion radionuclides in combination with chelates highly functionalized with peptidic, nonpeptidic or protein ligands or additional signalling moieties.
摘要:
A compound, or a pharmaceutically acceptable salt or ester thereof, comprises the structure: [(P1-S1j)p-L-(S2q-P2)r]t wherein: P1 and P2, which may be the same or different, are cyclic oligopeptide moieties, at least one of P1 and P2 having the motif B-Arg or B-(Me) Arg within the cyclic moiety, wherein B is a basic amino acid, a derivative thereof, or phenylalanine or a derivative thereof; S1 and S2 are spacer groups, which may be the same or different; L is a linker moiety containing at least two functional groups for attachment of the cyclic oligopeptides or spacer groups; n and q are independently 0 or 1; p and r are independently integers of 1 or more; and t is an integer of 1 or more, provided that, when t, p or r is greater than 1, the cyclic oligopeptide moiety, spacer group and/or the value of j or q may be the same or different between the multiple (P1-S1j) moieties or multiple (S2q-P2) moieties.
摘要:
Provided herein are compounds or conjugates useful for diagnostic imaging and/or therapeutic purposes. Each compound or conjugate comprises a ligand for the chemokine receptor CXCR4 and a detectable label. The ligand has a binding affinity for the CXCR4 receptor, measured as IC50 in the presence of 125I-CPCR4, of 250 nM or lower, and the ligand comprises a cyclic oligopeptide moiety having the motif B-Arg or B-(Me)Arg within the cyclic moiety, wherein B is a basic amino acid, a derivative thereof, or phenylalanine, provided that the motif is B-Arg when B is a Nα-methyl derivative of a basic amino acid.
摘要:
The present invention, among others, relates to a compound having a structure according to formula (I) or a pharmaceutically acceptable salt thereof, wherein Xaa1 to Xaa4 are independently of each other, an optionally N-alkylated natural or unnatural amino acid, R is H or methyl, L is a linker moiety, Ar is a spacer comprising an aromatic moiety, and D comprises, preferably is i) a combination of an organic complexation agent and a detectable label; or ii) a detectable label, an organic complexation agent or an active substance, said active substance particularly being selected from cytotoxic agents, lipids, sugars, sugar conjugates, sugar derivatives, proteins and combinations thereof, with the proviso that -L-Ar-D does not comprise a 18F-benzoyl residue.
摘要:
The present invention relates to the field of molecular imaging, i.e. nuclear and fluorescent imaging using metal ion radionuclides in combination with chelates highly functionalized with peptidic, nonpeptidic or protein ligands or additional signalling moieties.
摘要:
A compound, or a pharmaceutically acceptable salt or ester thereof, comprises the structure: [(P1-S1j)p-L-(S2q-P2)r]t wherein: P1 and P2, which may be the same or different, are cyclic oligopeptide moieties, at least one of P1 and P2 having the motif B-Arg or B-(Me) Arg within the cyclic moiety, wherein B is a basic amino acid, a derivative thereof, or phenylalanine or a derivative thereof; S1 and S2 are spacer groups, which may be the same or different; L is a linker moiety containing at least two functional groups for attachment of the cyclic oligopeptides or spacer groups; n and q are independently 0 or 1; p and r are independently integers of 1 or more; and t is an integer of 1 or more, provided that, when t, p or r is greater than 1, the cyclic oligopeptide moiety, spacer group and/or the value of j or q may be the same or different between the multiple (P1-S1j) moieties or multiple (S2q-P2) moieties.
摘要:
The present invention, among others, relates to a compound having a structure according to formula (I) or a pharmaceutically acceptable salt thereof, wherein Xaa1 to Xaa4 are independently of each other, an optionally N-alkylated natural or unnatural amino acid, R is H or methyl, L is a linker moiety, Ar is a spacer comprising an aromatic moiety, and D comprises, preferably is i) a combination of an organic complexation agent and a detectable label; or ii) a detectable label, an organic complexation agent or an active substance, said active substance particularly being selected from cytotoxic agents, lipids, sugars, sugar conjugates, sugar derivatives, proteins and combinations thereof, with the proviso that -L-Ar-D does not comprise a 18F-benzoyl residue.
摘要:
A compound, or a pharmaceutically acceptable salt or ester thereof, comprises a ligand for the chemokine receptor CXCR4 and a detectable label, the ligand having a binding affinity for the CXCR4 receptor, measured as IC50 in the presence of 125I-CPCR4, of 25O nM or lower, wherein the ligand comprises a cyclic oligopeptide moiety having the motif B-Arg or B-(Me)Arg within the cyclic moiety, and wherein B is a basic amino acid; a derivative thereof, or phenylalanine, provided that the motif is B-Arg when B is a Nα-methyl derivative of a basic amino acid. In preferred embodiments, the cyclic oligopeptide moiety has the sequence: cyclo[D-Tyr/(Me)D-Tyr-B-Arg/(Me)Arg-Z-(Ala)n-X] wherein: B is as defined above; Z is an amino acid containing an aromatic group in its side chain; n is 1 or 0, provided that n is 1 only when the preceding four amino acids in the cyclic moiety sequence are D-Tyr/(Me)D-Tyr-Arg-Arg-NaI, NaI being L-3-(2-naphthyl)alanine; and X is selected from Gly, (Me)Gly, Ala, Dap (diaminopropionic acid), Dap(FP) ((N-fluoropropionyl)-diaminopropionic acid), Dab (diaminobutylic acid), Dab(FP) ((N-fluoropropionyl)-diaminobutyric acid), Dab(FB) ((N-fluorobenzoyl)-diaminobutyric acid) and Dap(FB) ((N-fluorobenzoyl)-diaminopiOpionic acid). The compounds may be useful for diagnostic imaging and/or therapeutic purposes.
摘要:
A compound of the formula: wherein R1 is selected from H, methyl, ethyl, carboxyl protecting groups and hydrophilic moieties, R2 and R3 are independently selected from H, methyl, ethyl and carboxyl protecting groups, R4 is selected from H, methyl, ethyl, hydrophilic moieties and carboxyl protecting groups, and R5 is an aryl, heteroaryl, alkyl or a combination of these groups and is substituted with a carbonyl group, an aminooxy group or a functional group suitable for participating in a cycloaddition reaction. The compounds of the invention may be useful as bifunctional chelating agents which allow chemoselective attachment to targeting molecules.