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450 results

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Page 1
Stereoselective Amine-omics Using Heavy Atom Isotope Labeled l- and d-Marfey's Reagents.
Mishra NR, Gutheil WG. Mishra NR, et al. J Am Soc Mass Spectrom. 2024 Apr 29. doi: 10.1021/jasms.4c00036. Online ahead of print. J Am Soc Mass Spectrom. 2024. PMID: 38683793
The chemical complexity of biological samples is challenging, and the selective identification and quantification of amines and amino acid stereoisomers would be very useful for amine-focused "amino-omics" studies. Many amines and amino acids are chiral, and their stereois …
The chemical complexity of biological samples is challenging, and the selective identification and quantification of amines and amino acid s …
Electrosynthesis of iminophosphoranes and applications in nickel catalysis.
Mdluli V, Lehnherr D, Lam YH, Chaudhry MT, Newman JA, DaSilva JO, Regalado EL. Mdluli V, et al. Chem Sci. 2024 Mar 8;15(16):5980-5992. doi: 10.1039/d3sc05357a. eCollection 2024 Apr 24. Chem Sci. 2024. PMID: 38665537 Free PMC article.
P(v) iminophosphorane compounds are accessed via electrochemical oxidation of commercially available P(iii) phosphines, including mono-, di- and tri-dentate phosphines, as well as chiral phosphines. The reaction uses inexpensive bis(trimethylsilyl)carbodiimide as an …
P(v) iminophosphorane compounds are accessed via electrochemical oxidation of commercially available P(iii) phosphines, including mono-, di- …
Photocatalytic Z/E isomerization unlocking the stereodivergent construction of axially chiral alkene frameworks.
Wang J, Gu J, Zou JY, Zhang MJ, Shen R, Ye Z, Xu PX, He Y. Wang J, et al. Nat Commun. 2024 Apr 16;15(1):3254. doi: 10.1038/s41467-024-47404-3. Nat Commun. 2024. PMID: 38627395 Free PMC article.
However, the vast majority of them are still limited to the isomerization of di- and tri-substituted alkenes. The stereospecific Z/E isomerization of tetrasubstituted alkenes remains to be an underdeveloped area, thus lacking in a stereodivergent synthesis of axially ch …
However, the vast majority of them are still limited to the isomerization of di- and tri-substituted alkenes. The stereospecific Z/E …
erythro-{1-Bromo-1-[(1-phenyl-eth-yl)sulfon-yl]eth-yl}benzene.
Corfield PWR. Corfield PWR. IUCrdata. 2024 Mar 6;9(Pt 3):x240189. doi: 10.1107/S2414314624001895. eCollection 2024 Mar. IUCrdata. 2024. PMID: 38586521 Free PMC article.
The title compound, C(16)H(17)BrO(2)S, crystallizes as the erythro (RR/SS) isomer of a pair of sulfones that were diastereomeric due to chirality of the alpha-carbon atoms on the sulfone sulfur atom. The structural analysis was pivotal in showing that the 1,3 elimination r …
The title compound, C(16)H(17)BrO(2)S, crystallizes as the erythro (RR/SS) isomer of a pair of sulfones that were diastereomeric due to c …
Positions of Chiral Alkoxy Groups Responsible for Ferroelectricity in a Columnar Liquid Crystal Phase of Diphenylureas with Six Alkoxy Groups.
Ogura Y, Akiyama A, Kohri M, Kishikawa K. Ogura Y, et al. J Phys Chem B. 2024 Apr 18;128(15):3775-3783. doi: 10.1021/acs.jpcb.4c00642. Epub 2024 Apr 3. J Phys Chem B. 2024. PMID: 38569005
However, the mechanisms by which the six chiral alkoxy groups in Urea-(S)-cit generate ferroelectricity have not been determined. ...The chiral alkoxy groups at 3- and 5-positions of the phenyl groups were clarified to play a significant role in the generation of fe …
However, the mechanisms by which the six chiral alkoxy groups in Urea-(S)-cit generate ferroelectricity have not been determined. ... …
PLD3 and PLD4 synthesize S,S-BMP, a key phospholipid enabling lipid degradation in lysosomes.
Singh S, Dransfeld U, Ambaw Y, Lopez-Scarim J, Farese RV Jr, Walther TC. Singh S, et al. bioRxiv [Preprint]. 2024 Mar 21:2024.03.21.586175. doi: 10.1101/2024.03.21.586175. bioRxiv. 2024. PMID: 38562702 Free PMC article. Preprint.
Alterations in BMP levels are associated with neurodegenerative diseases. Unlike typical glycerophospholipids, lysosomal BMP has two chiral glycerol carbons in the S (rather than the R) stereo-conformation, protecting it from lysosomal degradation. ...
Alterations in BMP levels are associated with neurodegenerative diseases. Unlike typical glycerophospholipids, lysosomal BMP has two chir …
Tri-mode Responses to Reactive Oxygen Species In Vivo by Chiral Vanadium-Based Nanoparticles.
Yu G, Kuang H, Xu C, Sun M, Hao C. Yu G, et al. Anal Chem. 2024 Apr 9;96(14):5677-5685. doi: 10.1021/acs.analchem.4c00665. Epub 2024 Mar 27. Anal Chem. 2024. PMID: 38533607
Chiral V(2)O(3)/VN NPs were prepared with the "ligand-induced chirality" strategy and showed a g-factor of up to 0.12 at a wavelength of 512 nm. ...This strategy provides an innovative approach to the detection of ROS and is expected to promote the wider application …
Chiral V(2)O(3)/VN NPs were prepared with the "ligand-induced chirality" strategy and showed a g-factor of up to 0.12 at a wav …
Palladium-catalyzed enantioselective arylation of trichloro- or tri-/difluoroacetaldimine precursors.
Wei J, Du Z, Wang X, Ji C, Li L, You Y. Wei J, et al. Chem Commun (Camb). 2024 Mar 19;60(24):3303-3306. doi: 10.1039/d4cc00022f. Chem Commun (Camb). 2024. PMID: 38426541
A palladium-catalyzed asymmetric alpha-arylation of N-carbamoyl imine precursors containing CCl(3), CF(3) and CF(2)H is presented. This protocol provides facile access to a series of chiral alpha-aryl trichloroethylamines bearing various functional groups, with moderate to …
A palladium-catalyzed asymmetric alpha-arylation of N-carbamoyl imine precursors containing CCl(3), CF(3) and CF(2)H is presented. This prot …
Covalent Organic Frameworks with Tunable Chirality for Chiral-Induced Spin Selectivity.
Han X, Jiang C, Hou B, Liu Y, Cui Y. Han X, et al. J Am Chem Soc. 2024 Mar 13;146(10):6733-6743. doi: 10.1021/jacs.3c13032. Epub 2024 Feb 28. J Am Chem Soc. 2024. PMID: 38418379
Chiral covalent organic frameworks (CCOFs) have attracted extensive interest for their potential applications in various enantioselective processes. ...This facilitates the design and synthesis of a new family of Zn(salen)-based 2D CCOFs, namely, CCOFs-9-12, by imine conde …
Chiral covalent organic frameworks (CCOFs) have attracted extensive interest for their potential applications in various enantioselec …
Self-similar chiral organic molecular cages.
Wang Z, Zhang QP, Guo F, Ma H, Liang ZH, Yi CH, Zhang C, Chen CF. Wang Z, et al. Nat Commun. 2024 Jan 22;15(1):670. doi: 10.1038/s41467-024-44922-y. Nat Commun. 2024. PMID: 38253630 Free PMC article.
In this work, 2D tri-bladed propeller-shaped triphenylbenzene serves as building blocks to synthesize a racemic 3D tri-bladed propeller-shaped helical molecular cage. This cage, in turn, acts as a building block for a pair of higher-level 3D tri-bladed chi …
In this work, 2D tri-bladed propeller-shaped triphenylbenzene serves as building blocks to synthesize a racemic 3D tri-bladed …
450 results