[EN] NOVEL TETRAZINE COMPOUNDS FOR IN VIVO IMAGING<br/>[FR] NOUVEAUX COMPOSÉS DE TÉTRAZINE POUR L'IMAGERIE IN VIVO
申请人:UNIV COPENHAGEN
公开号:WO2020108720A1
公开(公告)日:2020-06-04
The present invention relates to novel tetrazine compounds of formula I, wherein one of R1-R5 is 18F, for use in pretargeted in vivo imaging. The compounds are suitable for use in click chemistry, i.e. reactions that join a targeting molecule and a reporter molecule. The invention further relates to precursors to formula I, wherein one of R1-R5 is SnR3, B(OR)2, B(0H)2. Formula (I).
Provided herein are dendrimer-targeting agent conjugates comprising a dendrimer, the dendrimer comprising a core unit and lysine or lysine analogue building units, a HER2 targeting agent which is a peptidic moiety having a molecular weight of up to about 80 kDa and comprising an antigen-binding site, which is covalently linked by a spacer group, and a therapeutic agent which is covalently linked to a surface building unit of the dendrimer. Also provided herein are compositions comprising the conjugates, and therapeutic methods using the conjugates, particularly for treating cancer.
Installation of Minimal Tetrazines through Silver-Mediated Liebeskind–Srogl Coupling with Arylboronic Acids
作者:William D. Lambert、Yinzhi Fang、Subham Mahapatra、Zhen Huang、Christopher W. am Ende、Joseph M. Fox
DOI:10.1021/jacs.9b08677
日期:2019.10.30
typically re-lies on linkers that can negatively impact the physiochemical properties of conjugates. Cross-coupling with arylboronic acids and a new reagent, 3-((p-biphenyl-4-ylmethyl)thio)-6-methyltetrazine (b-Tz), proceeds under mild, PdCl2(dppf)-catalyzed conditions to introduce minimal, linker-free te-trazine functionality. Safety considerations guided our design of b-Tz which can be prepared on decagram
Cross-Coupling Reactions of Monosubstituted Tetrazines
作者:Lukas V. Hoff、Simon D. Schnell、Andrea Tomio、Anthony Linden、Karl Gademann
DOI:10.1021/acs.orglett.1c01813
日期:2021.8.6
A Ag-mediated Pd-catalyzed cross-coupling method for 3-bromo-1,2,4,5-tetrazine with boronic acids is presented. Electronic modification of the 1,1′-bis(diphenylphosphine)ferrocene (dppf) ligand was found to be crucial for good turnover. Using this fast method, a variety of alkyl-, heteroatom-, and halide-substituted aryl- and heteroaryl-tetrazines were prepared (29 examples, up to 87% yield).
Synthesis, structures of some unsymmetrical 3,6-disubstituted-1,2,4,5-tetrazines
作者:Wei-Xiao Hu、Feng Xu
DOI:10.1002/jhet.5570450628
日期:2008.11
A series of new unsymmetrical 3-phenyl-6-benzyl-1,2,4,5-tetrazine derivatives 10a-i were synthesized and characterized by IR, NMR, MS, and element analysis. The structures of 4a, 10c, 10d and 10h were analyzed by X-ray crystallography, which had intermolecular C-H-N, C-H-Cl, C-H-II and II-II interactions.