摘要:
The present invention relates to the field of nuclear medicine and molecular imaging, i.e. radiopharmaceuticals for imaging and targeted radiotherapy, using metal ion radionuclides or paramagnetic metal ions in combination with chelators that are highly functionalized with peptidic or nonpeptidic ligands, or radioactive or non-radioactive signalling units. Formula (II) wherein m, n, o and p are independently of each other selected from the integers 1 and 2; and R', R", R'" and R'" are independently of each other selected from OH or an amide residue -NR 1 R 2 2 .
摘要:
The present invention relates to methods for the preparation of reactive [ 18 F] fluoride in a form suitable for efficient radiolabeling without an evaporation step by the use of an anion exchange and alkalimetal cryptates.
摘要:
A compound of the formula: wherein R 1 is selected from H, methyl, ethyl, carboxyl protecting groups and hydrophilic moieties, R 2 and R 3 are independently selected from H, methyl, ethyl and carboxyl protecting groups, R 4 is selected from H, methyl, ethyl, hydrophilic moieties and carboxyl protecting groups, and R 5 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 maybe useful as bifunctional chelating agents which allow chemoselective attachment to targeting molecules.
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:
The present invention, among others, relates to a compound having a structure according to formula (I) or a pharmaceutically acceptable salt thereof, wherein Xaa 1 to Xaa 4 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 18 F-benzoyl residue.
摘要:
The invention relates to the provision of compounds, methods for producing them, and their use for imaging and quantification of aggregates of β-amyloid peptides in vivo. In a preferred aspect of the invention, a tracer is administered to humans and displays enrichment in body parts that are containing aggregates of amyloid peptides. Tracers of the invention can be used for non-invasive depiction and quantification of aggregates of β-amyloid peptides in humans affected with diseases that are characterized in the generation of such aggregates.
摘要:
The invention relates to compounds having a structure according to formula (I), cyclo[(R 1 )Xaa 1 B-(R 2 )Xaa 2 (R3)Xaa 3 -(R 4 )Xaa 4 ], or pharmaceutically acceptable salts thereof, wherein Xaa 1 and Xaa 3 are independently of each other, a natural or unnatural amino acid, preferably with Xaa 1 and Xaa 3 being, independently of each other, an amino acid comprising an aromatic moiety in its side chain, Xaa 2 is a natural or unnatural basic amino acid, Xaa 4 is glycine or a D-amino acid, R 1 , R 2 , R 3 and R 4 are independently of each other H or methyl, B is an amino acid group having a structure according to formula (II), -N(-Q)-CHR 5 -C(=0)-, wherein R 5 is selected from the group consisting of H, optionally substituted alkyl, optionally substituted aryl and optionally substituted heteroaryl, and a moiety L, and wherein Q is a group being sterically more demanding than a methyl group. The invention also relates to compositions, methods and uses related to said compounds.
摘要:
A compound, or a pharmaceutically acceptable salt or ester thereof, comprises the structure: [(P1-S1 j ) p - L - (S2 q -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-S1 j ) moieties or multiple (S2 q -P2) moieties.