62303-06-4Relevant 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.
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.
Synthesis of dibenzodiazepinones via tandem copper(I)-catalyzed C-N bond formation
Gawande, Sachin D.,Kavala, Veerababurao,Zanwar, Manoj R.,Kuo, Chun-Wei,Huang, Wen-Chang,Kuo, Ting-Shen,Huang, Hsiu-Ni,He, Chiu-Hui,Yao, Ching-Fa
supporting information, p. 2599 - 2608 (2014/09/17)
An efficient, one-pot method for the synthesis of dibenzodiazepinone derivatives involving copper-catalyzed tandem C-N bond formation is reported. The use of various halo amide and 2-iodoaniline derivatives permitted the synthesis of an array of dibenzodiazepinone derivatives in moderate to good yields. Moreover, a dibenzodiazepinone derivative {2-(11-oxo-5H-dibenzo[b,e][1, 4]diazepin-10(11H)-yl)benzonitrile} was utilized to synthesize the triazapentacyclic ring derivative {12-chloro- 8,15,22-triazapentacyclo[13.7.0. 02,7.09,14.016,21]docosa-1(22),2,4,6,9(14),10, 12,16(21),17,19-decaene}.
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
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.
A convenient palladium catalyzed synthesis of symmetric biaryls, biheterocycles and biaryl chiral diamides
Goswami, Shyamaprosad,Adak, Avijit Kumar,Mukherjee, Reshmi,Jana, Subrata,Dey, Swapan,Gallagher, John F.
, p. 4289 - 4295 (2007/10/03)
A series of symmetrical diamido biaryls has been synthesized in good yield by direct homocoupling of iodoarylbenzamides by palladium-catalysis. No cross product has been isolated from the reaction mixture of two different iodoarylbenzamides under similar conditions. However, only in the case of 2-iodo-N-phenylbenzamide, the intramolecularly coupled product phenanthridone has been isolated as a minor product along with the major intermolecularly coupled product. Biphenyl chiral diamides have been synthesized by this coupling method. This coupling reaction also works well with the reductive dimerization of functionalized heterocyclic compounds. Thus 6,6′-dipivaloylamino-3, 3′-bipyridine and 6,6′-dimethyl-2,2′-bipyridine have been efficiently synthesized. In two cases, the X-ray crystal structures have been solved to establish the structures of symmetrical and chiral diamido biaryls and their supramolecular networks.
