72000-67-0Relevant articles and documents
Copper-catalysed bromoamination of maleimides using NBS as the bromine source
Kong, De-Huan,An, Yu-Long,Shao, Zhi-Yu,Zhao, Sheng-Yin
, p. 476 - 480 (2018/10/15)
CuBr2-catalysed bromoamination of maleimides has been achieved in THF with alkylamines and N-bromosuccinimide as nitrogen and bromine sources respectively. The reaction conditions were optimised. A series of bromoamination products such as 3-am
Iodine-Promoted C(sp 2)-H thiolation of maleimides with dimethyl sulfoxide and thiols
Tan, Hong-Ru,Wang, Lun,Yang, Zhen-Hua,Zhao, Sheng-Yin,Zhu, Jia-Nan
, p. 4113 - 4123 (2018/10/15)
Iodine-promoted C(sp 2)-H methylthiolation of maleimides using DMSO as synthon has been developed to afford 3-methylthiomaleimides in moderate yields under metal-free conditions. In addition, 3-thiomaleimides were synthesized from maleimides an
A para-C–H Functionalization of Aniline Derivatives via In situ Generated Bulky Hypervalent Iodinium Reagents
Tian, Chao,Yao, Xu,Ji, Weizhe,Wang, Qian,An, Guanghui,Li, Guangming
supporting information, p. 5972 - 5979 (2018/11/23)
A practical para-C-H functionalization of aniline derivatives has been developed using an in situ generated bulky hypervalent iodinium reagent. Para-iodo, bromo, chloro, nitro, trifluormethyl aniline derivatives can be obtained efficiently, in many cases in 10 min in a transition metal-free manner. Medicinal chemicals or intermediates can be purified without column chromatography or recrystallization, which significantly reduces the waste and simplifies the work-up process.
Stable and Rapid Thiol Bioconjugation by Light-Triggered Thiomaleimide Ring Hydrolysis
Kalia, Dimpy,Pawar, Sharad P.,Thopate, Jyoti S.
, p. 1885 - 1889 (2017/02/05)
Maleimide-mediated thiol-specific derivatization of biomolecules is one of the most efficacious bioconjugation approaches currently available. Alarmingly, however, recent work demonstrates that the resulting thiomaleimide conjugates are susceptible to breakdown via thiol exchange reactions. Herein, we report a new class of maleimides, namely o-CH2NHiPr phenyl maleimides, that undergo unprecedentedly rapid ring hydrolysis after thiol conjugation to form stable thiol exchange-resistant conjugates. Furthermore, we overcome the problem of low shelf lives of maleimide reagents owing to their propensity to undergo ring hydrolysis prior to bioconjugation by developing a photocaged version of this scaffold that resists ring hydrolysis. UV irradiation of thiol bioconjugates formed with this photocaged maleimide unleashes rapid thiomaleimide ring hydrolysis to yield the desired stable conjugates within 1 h under gentle, ice-cold conditions.
Coumarin-based fluorogenic agents and uses thereof for specific protein labelling
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, (2017/08/08)
There are provided fluorescent labelling agents comprising a dimaleimide core connected to a fluorophore, processes for preparation thereof, and uses thereof for labelling and/or detection of specific protein targets. Fluorescent labelling agents comprising a compound having the structure of Formula I, and salts thereof, are described.
Reversible covalent linkage of functional molecules
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Page/Page column 57, (2016/04/26)
The present invention relates to the use of a compound containing a moiety of formula (I) as a reagent for linking a compound of formula R1—H which comprises a first functional moiety of formula F1 to a second functional moiety of fo
A mild and selective protecting and reversed modification of thiols
Li, Xiangmin,Li, Hongxian,Yang, Wei,Zhuang, Jinchen,Li, Hao,Wang, Wei
, p. 2660 - 2663 (2016/06/01)
One selective thiol-protecting study has been investigated for a wide range of thiols including general thiols and thiols containing multiple functional groups. The reactions of bromomaleimides and thiols under the mild condition afforded the protected products in excellent yields. The thiols can be recovered very quickly using dithiothreitol (DTT) under the mild condition.
Ring Substituent Effects on the Thiol Addition and Hydrolysis Reactions of N-Arylmaleimides
Chen, Yingche,Tsao, Kelvin,De Francesco, élise,Keillor, Jeffrey W.
, p. 12182 - 12192 (2016/01/09)
Maleimide groups are used extensively in bioconjugation reactions, but limited kinetic information is available regarding their thiol addition and hydrolysis reactions. We prepared a series of fluorogenic coumarin maleimide derivatives that differ by the
Aryloxymaleimides for cysteine modification, disulfide bridging and the dual functionalization of disulfide bonds
Marculescu, Cristina,Kossen, Hanno,Morgan, Rachel E.,Mayer, Patrick,Fletcher, Sally A.,Tolner, Berend,Chester, Kerry A.,Jones, Lyn H.,Baker, James R.
, p. 7139 - 7142 (2014/07/07)
Tuning the properties of maleimide reagents holds significant promise in expanding the toolbox of available methods for bioconjugation. Herein we describe aryloxymaleimides which represent 'next generation maleimides' of attenuated reactivity, and demonstrate their ability to enable new methods for protein modification at disulfide bonds.
A tandem [3+2] cycloaddition-elimination cascade reaction to generate pyrrolo-[3,4-c]pyrrole-1,3-diones
Martinez-Ariza, Guillermo,Dietrich, Justin,De Moliner, Fabio,Hulme, Christopher
, p. 1801 - 1804 (2013/09/12)
An efficient tandem [3+2] cycloaddition-elimination cascade sequence has been developed enabling assembly of the pharmacologically relevant pyrrolo-[3,4-c]pyrrole-1,3-dione chemotype. The strategy involves simple mixing of readily accessible oxazolin-2-on