892-48-8Relevant articles and documents
Synthesis and characterization of Se-adenosyl-L-selenohomocysteine selenoxide
Duclos, Richard I.,Cleary, Dillon C.,Catcott, Kalli C.,Zhou, Zhaohui Sunny
, p. 135 - 144 (2015)
Selenium is an essential micronutrient in humans due to the important roles of the selenocysteine-containing selenoproteins. Organoselenium metabolites are generally found to be substrates for the biochemical pathways of their sulfur analogs, and the redox chemistry of selenomethionine and some other metabolites have been previously reported. We now report the first synthesis and characterization of Se-adenosylselenohomocysteine selenoxide (SeAHO) prepared via hydrogen peroxide oxidation of Se-adenosylselenohomocysteine. The selenoxide SeAHO, in contrast to its corresponding sulfoxide S-adenosylhomocysteine (SAHO), can form hydrate, has an electrostatic interaction between the α-amino acid moiety and the highly polar selenoxide functional group, and readily oxidizes glutathione (GSH) and cysteine thiols.
Discovery of a dual PRMT5-PRMT7 inhibitor
Smil, David,Eram, Mohammad S.,Li, Fengling,Kennedy, Steven,Szewczyk, Magdalena M.,Brown, Peter J.,Barsyte-Lovejoy, Dalia,Arrowsmith, Cheryl H.,Vedadi, Masoud,Schapira, Matthieu
, p. 408 - 412 (2015)
The protein arginine methyltransferases PRMT7 and PRMT5, respectively, monomethylate and symmetrically dimethylate arginine side-chains of proteins involved in diverse cellular mechanisms, including chromatin-mediated control of gene transcription, splicing, and the RAS to ERK transduction cascade. It is believed that PRMT5 and PRMT7 act in conjunction to methylate their substrates, and genetic deletions support the notion that these enzymes derepress cell proliferation and migration in cancer. Using available structures of PRMT5, we designed DS-437, a PRMT5 inhibitor with an IC50 value of 6 μM against both PRMT5 and PRMT7 that is inactive against 29 other human protein-, DNA-, and RNA-methyltransferases and inhibits symmetrical dimethylation of PRMT5 substrates in cells. This compound behaves as a cofactor competitor and represents a valid scaffold to interrogate the potential of the PRMT5-PRMT7 axis as a target for therapy.
Directed Evolution of a Fluorinase for Improved Fluorination Efficiency with a Non-native Substrate
Sun, Huihua,Yeo, Wan Lin,Lim, Yee Hwee,Chew, Xinying,Smith, Derek John,Xue, Bo,Chan, Kok Ping,Robinson, Robert C.,Robins, Edward G.,Zhao, Huimin,Ang, Ee Lui
, p. 14277 - 14280 (2016)
Fluorinases offer an environmentally friendly alternative for selective fluorination under mild conditions. However, their diversity is limited in nature and they have yet to be engineered through directed evolution. Herein, we report the directed evolution of the fluorinase FlA1 for improved conversion of the non-native substrate 5′-chloro-5′-deoxyadenosine (5′-ClDA) into 5′-fluoro-5′-deoxyadenosine (5′-FDA). The evolved variants, fah2081 (A279Y) and fah2114 (F213Y, A279L), were successfully applied in the radiosynthesis of 5′-[18F]FDA, with overall radiochemical conversion (RCC) more than 3-fold higher than wild-type FlA1. Kinetic studies of the two-step reaction revealed that the variants show a significantly improved kcatvalue in the conversion of 5′-ClDA into S-adenosyl-l-methionine (SAM) but a reduced kcatvalue in the conversion of SAM into 5′-FDA.
Potent SARS-CoV-2 mRNA Cap Methyltransferase Inhibitors by Bioisosteric Replacement of Methionine in SAM Cosubstrate
Bobi?eva, Olga,Bobrovs, Raitis,Ka?epe, Iveta,Patetko, Liene,Kalni??, Gints,?i?ovs, Mihails,Bula, Anna L.,Grī Nberga, Solveiga,Borodu??is, Mā Rti??,Ramata-Stunda, Anna,Rostoks, Nils,Jirgensons, Aigars,Tā Rs, Kaspars,Jaudzems, Kristaps
, p. 1102 - 1107 (2021/06/30)
Viral mRNA cap methyltransferases (MTases) are emerging targets for the development of broad-spectrum antiviral agents. In this work, we designed potential SARS-CoV-2 MTase Nsp14 and Nsp16 inhibitors by using bioisosteric substitution of the sulfonium and amino acid substructures of the cosubstrate S-adenosylmethionine (SAM), which serves as the methyl donor in the enzymatic reaction. The synthetically accessible target structures were prioritized using molecular docking. Testing of the inhibitory activity of the synthesized compounds showed nanomolar to submicromolar IC50 values for five compounds. To evaluate selectivity, enzymatic inhibition of the human glycine N-methyltransferase involved in cellular SAM/SAH ratio regulation was also determined, which indicated that the discovered compounds are nonselective inhibitors of the studied MTases with slight selectivity for Nsp16. No cytotoxic effects were observed; however, this is most likely a result of the poor cell permeability of all evaluated compounds.
Synthesis of triazole-linked SAM-adenosine conjugates: Functionalization of adenosine at N-1 or N-6 position without protecting groups
Atdjian, Colette,Braud, Emmanuelle,Coelho, Dylan,Ethève-Quelquejeu, Mélanie,Iannazzo, Laura
, (2020/08/07)
More than 150 RNA chemical modifications have been identified to date. Among them, methylation of adenosine at the N-6 position (m6A) is crucial for RNA metabolism, stability and other important biological events. In particular, this is the most abundant
5'-Deoxidation-5'-isopropyl-substituted-amino nucleoside compound and preparing method and application thereof
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Paragraph 0325-0329, (2019/05/28)
The invention discloses a 5'-deoxidation-5'-isopropyl-substituted-amino nucleoside compound shown in a formula 7, a preparing method of the compound shown in the formula 7 and application of the compound shown in the formula 7 to preparing a 5'-deoxidation-5'-polysubstitution amino nucleoside compound 1 as a midbody. The formula is defined in the description.
S-Adenosyl Methionine Cofactor Modifications Enhance the Biocatalytic Repertoire of Small Molecule C-Alkylation
McKean, Iain J. W.,Sadler, Joanna C.,Cuetos, Anibal,Frese, Amina,Humphreys, Luke D.,Grogan, Gideon,Hoskisson, Paul A.,Burley, Glenn A.
supporting information, p. 17583 - 17588 (2019/11/11)
A tandem enzymatic strategy to enhance the scope of C-alkylation of small molecules via the in situ formation of S-adenosyl methionine (SAM) cofactor analogues is described. A solvent-exposed channel present in the SAM-forming enzyme SalL tolerates 5′-chloro-5′-deoxyadenosine (ClDA) analogues modified at the 2-position of the adenine nucleobase. Coupling SalL-catalyzed cofactor production with C-(m)ethyl transfer to coumarin substrates catalyzed by the methyltransferase (MTase) NovO forms C-(m)ethylated coumarins in superior yield and greater substrate scope relative to that obtained using cofactors lacking nucleobase modifications. Establishing the molecular determinants that influence C-alkylation provides the basis to develop a late-stage enzymatic platform for the preparation of high value small molecules.
Purine compound containing bicyclic group, and preparation method thereof
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Paragraph 0208; 0212, (2019/10/01)
The invention provides a purine compound containing a bicyclic group which is shown as a formula (I) and a formula (II) and a pharmaceutically acceptable salt, and a preparation method thereof. The compound is an inhibitor of histone methyltransferase DOT1L, and can be used for treating diseases caused by the abnormity of enzyme activity, such as tumor.
Convenient preparation of pinometostat and related 5′-deoxy-5′-amino adenosine derivatives as well as their activity against DOT1L
Liu, Tongchao,Ren, Huanming,Li, Cong,Chen, Guohua,Cheng, Maosheng,Zhao, Dongmei,Shen, Jingkang,Li, Jia,Zhou, Yubo,Xiong, Bing,Chen, Yue-Lei
, p. 415 - 417 (2018/01/10)
From adenosine and 2′-C-Me adenosine, a 3-step route towards nucleoside DOT1L inhibitors, including pinometostat, EPZ5677, and FED1, was established. With useful structural-activity relationship information, the newly prepared 2′-C-Me adenosine derivative
SELECTIVE INHIBITORS OF PROTEIN ARGININE METHYLTRANSFERASE 5 (PRMT5)
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, (2018/01/20)
The disclosure is directed to compounds of Formula (I) and Formula (II). Methods of their use and preparation is other described.