A mild synthesis of N-functionalised bromomaleimides, thiomaleimides and bromopyridazinediones
摘要:
Bromomaleimides are useful building blocks in synthesis and powerful reagents for the selective chemical modification of proteins. A mild new synthesis of these reagents is described, along with the convenient transferability of the approach to dithiomaleimides and bromopyridazinediones. (c) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.
Next generation maleimides enable the controlled assembly of antibody–drug conjugates <i>via</i> native disulfide bond bridging
作者:Felix F. Schumacher、João P. M. Nunes、Antoine Maruani、Vijay Chudasama、Mark E. B. Smith、Kerry A. Chester、James R. Baker、Stephen Caddick
DOI:10.1039/c4ob01550a
日期:——
Highly homogeneous ADCs are generated by the efficient bridging of interchain disulfide bonds in trastuzumab, using next generation maleimides.
高度均一的ADCs是通过在曲妥珠单抗中高效地连接链间二硫键,使用下一代马来酰亚胺而生成的。
Iodine-124 Based Dual Positron Emission Tomography and Fluorescent Labeling Reagents for <i>In Vivo</i> Cell Tracking
作者:Truc Thuy Pham、Zhi Lu、Christopher Davis、Chun Li、Fangfang Sun、John Maher、Ran Yan
DOI:10.1021/acs.bioconjchem.9b00799
日期:2020.4.15
isotope offers the longest possible tracking time for directly labeled cells using positron emission tomography (PET). Herein, we have radiosynthesized and evaluated two iodine-124/fluorescein-based dual PET and fluorescentlabelingreagents, namely 124I-FIT-Mal and 124I-FIT-(PhS)2Mal for cell surface thiol bioconjugation. 124I-FIT-(PhS)2Mal labeled cells significantly more effectively than 124I-FIT-Mal.
The present invention relates to antibodies and antibody fragments, one or more of whose native inter-chain disulfide bridges have been replaced with a specific bridging moiety. The bridging moiety can be selectively targeted to inter-chain disulfide bonds within the antibody or antibody fragment, enabling the construction of more homogenously modified products such as antibody-drug conjugates.
Highly effective liquid and solid phase extraction methods to concentrate radioiodine isotopes for radioiodination chemistry
作者:Christopher Davis、Chun Li、Ruirui Nie、Norman Guzzardi、Barbara Dworakowska、Pragalath Sadasivam、John Maher、Eric O. Aboagye、Zhi Lu、Ran Yan
DOI:10.1002/jlcr.3994
日期:2022.8
Radioactive iodine isotopes play a pivotal role in radiopharmaceuticals. Large-scale production of multi-patient dose of radioiodinated nuclear medicines requires high concentration of radioiodine. We demonstrate that tetrabutylammonium chloride and methyltrioctylamonium chloride are effective phase transfer reagents to concentrate iodide-124, iodide-125 and iodide-131 from the corresponding commercial water solutions. The resulting concentrated radioiodide, in the presence of either phase transfer reagent, does not hamper the chemical reactivity of aqueous radioiodide in the copper (II)-mediated one-pot three-component click chemistry to produce radioiodinated iodotriazoles.
A mild synthesis of N-functionalised bromomaleimides, thiomaleimides and bromopyridazinediones
作者:Lourdes Castañeda、Zoë V.F. Wright、Cristina Marculescu、Trang M. Tran、Vijay Chudasama、Antoine Maruani、Elizabeth A. Hull、João P.M. Nunes、Richard J. Fitzmaurice、Mark E.B. Smith、Lyn H. Jones、Stephen Caddick、James R. Baker
DOI:10.1016/j.tetlet.2013.04.088
日期:2013.7
Bromomaleimides are useful building blocks in synthesis and powerful reagents for the selective chemical modification of proteins. A mild new synthesis of these reagents is described, along with the convenient transferability of the approach to dithiomaleimides and bromopyridazinediones. (c) 2013 The Authors. Published by Elsevier Ltd. All rights reserved.