62303-05-3Relevant academic research and scientific papers
Discovery and Mechanism of SARS-CoV-2 Main Protease Inhibitors
Bray, William,Carlin, Aaron F.,Clark, Alex E.,Endsley, Mark,Huante, Matthew B.,Huff, Sarah,Kummetha, Indrasena Reddy,Rana, Tariq M.,Smith, Davey,Tiwari, Shashi Kant,Wang, Shaobo
supporting information, (2021/10/20)
The emergence of a new coronavirus, severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2), presents an urgent public health crisis. Without available targeted therapies, treatment options remain limited for COVID-19 patients. Using medicinal chemistry and rational drug design strategies, we identify a 2-phenyl-1,2-benzoselenazol-3-one class of compounds targeting the SARS-CoV-2 main protease (Mpro). FRET-based screening against recombinant SARS-CoV-2 Mpro identified six compounds that inhibit proteolysis with nanomolar IC50 values. Preincubation dilution experiments and molecular docking determined that the inhibition of SARS-CoV-2 Mpro can occur by either covalent or noncovalent mechanisms, and lead E04 was determined to inhibit Mpro competitively. Lead E24 inhibited viral replication with a nanomolar EC50 value (844 nM) in SARS-CoV-2-infected Vero E6 cells and was further confirmed to impair SARS-CoV-2 replication in human lung epithelial cells and human-induced pluripotent stem cell-derived 3D lung organoids. Altogether, these studies provide a structural framework and mechanism of Mpro inhibition that should facilitate the design of future COVID-19 treatments.
Benzisoselenazolone derivative and preparation method and application thereof
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Paragraph 0027; 0068-0069, (2022/01/05)
The invention provides a benzisoselenazolone derivative and a preparation method and application thereof. The compound has a structure as shown in a formula I. The invention further relates to a preparation method of the compound with the structure shown in the formula I, a pharmaceutical composition and application of the compound in preparation of anti-SARS-CoV-2Mpro drugs.
PPh3/I2/HCOOH: An efficient CO source for the synthesis of phthalimides
Wang, Yingying,Zhou, Yang,Lei, Min,Hou, Jinjun,Jin, Qinghao,Guo, Dean,Wu, Wanying
supporting information, p. 1180 - 1185 (2019/01/26)
A straightforward and general method has been developed for the synthesis of phthalimide derivatives from 2-iodobenzamides and PPh3/I2/HCOOH in the presence of a catalytic amount of Pd(OAc)2. The reaction results demonstrate that PPh3/I2/HCOOH is a facile, efficient and safe CO source. The whole process is carried out in toluene at 80 °C and furnishes the desired products in good to excellent yields.
[N,P]-pyrrole PdCl2 complexes catalyzed the formation of dibenzo-α-pyrone and lactam analogues
Suárez-Meneses,Oukhrib,Gouygou,Urrutigo?ty,Daran,Cordero-Vargas,Ortega-Alfaro,López-Cortés
supporting information, p. 9621 - 9630 (2016/07/06)
We herein report the synthesis and catalytic application of a new family of [N,P] ligands based on the pyrrole ring with alpha-phosphine or phosphole units. Their palladium complexes (3a-d) were obtained in very good yields and their catalytic properties were evaluated in the direct intramolecular arylation to obtain both benzopyranones and phenanthridinones. The air stable complex 3a exhibited the best catalytic performance of this series of complexes, using 1 mol% of catalyst in combination with microwaves to promote this reaction.
Stable and Reusable Binaphthyl-Supported Palladium Catalyst for Aminocarbonylation of Aryl Iodides
Sharma, Nidhi,Sekar, Govindasamy
supporting information, p. 314 - 320 (2016/02/14)
A binaphthyl-supported Pd nanoparticles (Pd-BNP)-catalyzed aminocarbonylation of aryl iodides in the presence of carbon monoxide and amines for the synthesis of amides has been developed. This methodology provides an efficient route for the synthesis of a COX-2 enzyme inhibitor having anti-inflammatory activity.
Synthesis of (1H)-isochromen-1-imines by nickel-catalyzed reaction of 2-iodobenzamides with alkynes
Miura, Tomoya,Hiraga, Kentaro,Toyoshima, Takeharu,Yamauchi, Motoshi,Murakami, Masahiro
supporting information; experimental part, p. 798 - 800 (2012/09/07)
2-Iodobenzamides reacted with alkynes in the presence of a nickel(0)/P(4-ClC6H4)3 catalyst to produce substituted (1H)-isochromen-1-imines. The reaction proceeded through the formation of an oxanickelacycle, alkyne insertion, and reductive elimination.
Direct arylation under catalysis of an oxime-derived palladacycle: Search for a phosphane-free method
Zhang, Guofu,Zhao, Xiaobao,Yan, Yunbing,Ding, Chengrong
supporting information; experimental part, p. 669 - 672 (2012/03/27)
A phosphane-free method for the direct arylation of benzothiazole by employing oxime-derived palladacycle 1 as a catalyst was developed. The new catalyst system can be used for 2-arylations by using aryl bromides and iodides. In addition, this method is especially suitable for the intramolecular direct coupling of bromo-and iodoamides, as well aschloroamides, to achieve a rapid synthesis of benzo[c]phenanthridine alkaloids. Direct arylation reactions under catalysis of an oxime-derived palladacycle were investigated. This phosphane-free method is applicable for the 2-arylation of benzothiazole and is especially suitable for the intramolecular direct coupling of bromo-and iodoamides, as well as chloroamides, to achieve rapid synthesis of benzo[c]phenanthridine alkaloids. Copyright
Synergistic effect of palladium and copper catalysts: Catalytic cyclizative dimerization of ortho-(1-alkynyl)benzamides leading to axially chiral 1,3-butadienes
Yao, Bo,Jaccoud, Carole,Wang, Qian,Zhu, Jieping
supporting information; experimental part, p. 5864 - 5868 (2012/06/15)
Two is better than one: In the presence of Pd(OAc)2 and Cu(OAc)2, o-(1-alkynyl)benzamides 1 were converted into bis-iminobenzoisofurans with an axially chiral 1,3-diene 2 unit. The coexistence of both Pd and Cu catalysts was found to be essential for both the cyclizative dimerization process and for the observed unusual cyclization mode. Copyright
Palladium(II)-catalyzed intramolecular diamination of alkynes under aerobic oxidative conditions: Catalytic turnover of an iodide ion
Yao, Bo,Wang, Qian,Zhu, Jieping
supporting information; experimental part, p. 5170 - 5174 (2012/07/14)
"I" did it: A sequential intramolecular amination/N- demethylation/amidation of internal acetylenes in the presence of a catalytic amount of Pd(OAc)2 and nBu4NI afforded indolo[3,2-c]isoquinolinones under mild aerobic conditions (see
Silver-catalyzed intramolecular cyclization of o-(1-Alkynyl)benzamides: Efficient synthesis of (1H)-isochromen-1-imines
Liu, Guannan,Zhou, Yu,Ye, Deju,Zhang, Dengyou,Ding, Xiao,Jiang, Hualiang,Liu, Hong
supporting information; experimental part, p. 2605 - 2610 (2009/12/29)
An efficient avenue for the facile and atom-economic synthesis of (1H)-isochromen-1imines has been developed, and a broad spectrum of substrates can participate in the process effectively to produce the desired products in good yields. Significantly, this is the first report of the synthesis of (1H)-isochromen-l-imines that involves a silver(I)-catalyzed, regiocontrolled intramolecular addition of the carbonyl group of the amide moiety towards an alkyne.
