Ligands and methods for labeling biomolecules in vivo
Disclosed are tris(triazolylmethyl)amine ligands, and kits and methods for labeling and/or imaging a biomolecule of interest in a subject or living system.
1. A composition comprising a ligand for use in an azide-alkyne cycloaddition reaction and CuSO 4 , wherein the ligand is in complex with CuSO 4 in a ratio of ligand:CuSO 4 of at least 2:1 and wherein the ligand comprises a tris(triazolylmethyl)amine of formula (I):
wherein R1 and R2 are
wherein R3 is
wherein n2 is 2-3, and n4 is 1-2; and wherein ( ) is the point of attachment of the R1, R2, or R3 group to the ring structure.
2. The composition of claim 1 , wherein the ligand comprises
3. The composition of claim 1 , wherein the ligand comprises
4. The composition of claim 1 , wherein the ligand comprises
5. The composition of claim 1 , wherein the wherein the ligand is in complex with CuSO 4 in a ratio of ligand:CuSO 4 of 2:1 to 7:1.
6. The composition of claim 1 , wherein the wherein the ligand is in complex with CuSO 4 in a ratio of ligand:CuSO 4 of 5:1 to 6:1.
7. The composition of claim 1 , wherein the wherein the ligand is in complex with CuSO 4 in a ratio of ligand:CuSO 4 of 6:1.
8. A compound selected from the group consisting of
9. A compound having the structure of formula (I):
wherein R1 and R2 are
wherein R3 is
wherein n2 is 2-3, and n4 is 1-2; and wherein ( ) is the point of attachment of the R1, R2, or R3 group to the ring structure.