Org. and Biomol. Chem.

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RSC - Org. Biomol. Chem. latest articles
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Metal-free C-H amination of unactivated hydrocarbons with sulfonylimino-[small lambda]3-bromanes generated in situ from (diacetoxybromo)benzene

5 January, 2015 - 02:54

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02160F, PaperKazunori Miyamoto, Taiga Ota, Md. Mahbubul Hoque, Masahito Ochiai
A simple method for direct metal-free C-H amination of unactivated hydrocarbons using easy-handling diacetoxy-[small lambda]3-bromane and triflylamide or sulfamate esters was developed.
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Tuning Viscoelastic Properties of Supramolecular Peptide Gels via Dynamic Covalent Crosslinking

5 January, 2015 - 02:54
Org. Biomol. Chem., 2014, Accepted Manuscript
DOI: 10.1039/C4OB02217C, CommunicationAref Khalily, Melis Goktas, Mustafa O. Guler
Dynamic covalent crosslinking approach is used to crosslink supramolecular peptide gels. This novel approach facilitates tuning viscoelastic properties of the gel and enhances mechanical stability (storage modulus exceeding 105 Pa)...
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Phototriggerable peptidomimetics for the inhibition of Mycobacterium turberculosis ribonucleotide reductase by targeting protein-protein binding

5 January, 2015 - 02:54
Org. Biomol. Chem., 2014, Accepted Manuscript
DOI: 10.1039/C4OB01926A, PaperChristoffer Karlsson, Magnus Blom, Miranda Johansson, Anna M Jansson, Enzo Scifo, Anders Karlen, Thavendran Govender, Adolf Gogoll
Incorporation of an artificial amino acid 2 with a stilbene chromophore into peptidomimetics with three to nine amino acids yields phototriggerable candidates for inhibition of the binding between the R1...
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Rapid and scalable assembly of firefly luciferase substrates

5 January, 2015 - 02:54

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02529F, PaperDavid C. McCutcheon, William B. Porterfield, Jennifer A. Prescher
Improved access to luciferins will bolster bioluminescence imaging applications.
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Regulating the cytoprotective response in cancer cells using simultaneous inhibition of Hsp90 and Hsp70

5 January, 2015 - 02:54

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02531H, PaperY. Wang, S. R. McAlpine
Both heat shock protein 90 and 70 (Hsp90, Hsp70) are cytoprotective proteins that regulate cell function and faciliate cell growth by stabilizing and folding proteins.
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Synthesis of novel polyhydroxylated pyrrolidine-triazole/-isoxazole hybrid molecules

5 January, 2015 - 02:54

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB01934B, PaperCheng-Kun Lin, Li-Wei Cheng, Huang-Yi Li, Wen-Yi Yun, Wei-Chieh Cheng
A straightforward synthesis of novel, 2-heterocyclyl polyhydroxylated pyrrolidines is described.
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A Sc(OTf)3-catalyzed cascade reaction of o-aminoacetophenone with methanamine: construction of dibenzo[b,h][1,6]naphthyridine derivatives

5 January, 2015 - 02:54

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02220C, PaperDan Mao, Jun Tang, Wenbo Wang, Xin Liu, Shengying Wu, Jianjun Yu, Limin Wang
A Sc(OTf)3-catalyzed and air-mediated cascade reaction was discovered as an efficient approach to the novel fluorescent fused-four-ring dibenzo[b,h][1,6]naphthyridine derivatives.
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Transition metal catalyzed meta-C-H functionalization of aromatic compounds

5 January, 2015 - 02:54

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02171A, Review ArticleJiong Yang
This review summarizes synthetic methods for directing group guided, transition metal catalyzed meta-C-H functionalization of aromatic compounds.
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Vanadyl Species-Catalyzed, Complementary [small beta]-Oxidative Carbonylation of Styrene Derivatives with Aldehydes

5 January, 2015 - 02:54
Org. Biomol. Chem., 2014, Accepted Manuscript
DOI: 10.1039/C4OB02621G, PaperShiue-Shien Weng, Wen-Chieh Yang, Ananthan Ramasamy, Gobi Rajeshwaren, Yi-Ya Liao, Chien-Tien Chen
A series of oxometallic species and metal acetylacetonates (acac) was examined as catalysts for oxidative carbonylation of styrene with benzaldehyde by using t-butylhydroperoxide as co-oxidant in warm acetonitrile. Among them,...
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Preassembly-driven ratiometric sensing of H2PO4-anions in organic and aqueous environments

5 January, 2015 - 02:54
Org. Biomol. Chem., 2014, Accepted Manuscript
DOI: 10.1039/C4OB02498B, CommunicationWeitao Gong, Duo Na, Le Fang, Hassan Mehdi, Guiling Ning
Gemini surfactant-like receptor R1 is designed and synthesized. The special preassembly phenomenon of R1 in nonpolar solvent facilitate the novel ratiometric fluorescence sensing of H2PO4- via anion-induced reassembly process in...
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Palladium-Catalyzed Oxidative Deacetonative Coupling of 4-Aryl-2-methyl-3-butyn-2-ols with H-phosphonates

5 January, 2015 - 02:54
Org. Biomol. Chem., 2014, Accepted Manuscript
DOI: 10.1039/C4OB02410A, PaperXiang Li, Suyan Sun, Fan Yang, Jianxun Kang, Yusheng Wu, Yangjie Wu
An efficient and general applicable protocol for palladium-catalyzed oxidative deacetonative coupling of 4-aryl-2-methyl-3-butyn-2-ols with dialkyl H-phosphonates has been developed. This methodology provides a new and practical route to alkynylphosphonates using...
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Tetrahydrofuranyl and Tetrahydropyranyl Protection of Amino Acid Side-Chains Enables Synthesis of a Hydroxamate-Containing Aminoacylated tRNA

5 January, 2015 - 02:54
Org. Biomol. Chem., 2014, Accepted Manuscript
DOI: 10.1039/C4OB02212B, PaperLester J. Lambert, Marvin Miller, Paul W. Huber
The ability to specifically engineer metal binding sites into target proteins has far-reaching consequences ranging from the development of new biocatalysts and imaging reagents to the production of proteins with...
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Control of guanine-rich DNA secondary structures depending on the protease activity using a designed PNA peptide

5 January, 2015 - 02:54

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02535K, PaperKenji Usui, Arisa Okada, Keita Kobayashi, Naoki Sugimoto
A regulation system for DNA secondary structure formation of G-rich sequences using a designed PNA peptide exhibiting an enzyme-responsive functionality, depending on the protease activity was constructed.
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Near-instant surface-selective fluorogenic protein quantification using sulfonated triarylmethane dyes and fluorogen activating proteins

5 January, 2015 - 02:54

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02309A, PaperQi Yan, Brigitte F. Schmidt, Lydia A. Perkins, Matharishwan Naganbabu, Saumya Saurabh, Susan K. Andreko, Marcel P. Bruchez
A bis-sulfonate linker modified malachite green fluorogen improves its specificity and allows rapid, no-wash labeling of receptors on living cells.
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Uncovering new structural insights for antimalarial activity from cost-effective aculeatin-like derivatives

5 January, 2015 - 02:54

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02459A, PaperMatthias Winkler, Marjorie Maynadier, Sharon Wein, Marie-Ange Lespinasse, Giovanna Boumis, Adriana E. Miele, Henri Vial, Yung-Sing Wong
An expedient synthesis of aculeatin-like analogues results in finding PfTrxR as putative cellular target and a promising new antimalarial chemotype.
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Copper(II)-catalyzed coupling reaction: an efficient and regioselective approach to N[prime or minute],N[prime or minute]-diaryl acylhydrazines

5 January, 2015 - 02:54

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02343A, PaperJi-Quan Zhang, Gong-Bin Huang, Jiang Weng, Gui Lu, Albert S. C. Chan
An efficient and regioselective copper(II)-catalyzed coupling reaction of N[prime or minute]-aryl acylhydrazines for the synthesis of N[prime or minute],N[prime or minute]-diaryl acylhydrazines has been developed.
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A microwave-assisted multicomponent synthesis of substituted 3,4-dihydroquinazolinones

1 January, 2015 - 02:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02417F, PaperMarc Y. Stevens, Krzysztof Wieckowski, Peng Wu, Rajiv T. Sawant, Luke R. Odell
A series of structurally diverse 3,4-dihydroquinazolinones was synthesized via a novel cascade imine/cyclization/aza-Henry reaction in moderate to excellent yields.
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Understanding the domino reaction between 3-chloroindoles and methyl coumalate yielding carbazoles. A DFT study

1 January, 2015 - 02:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02340D, PaperLuis R. Domingo, Jose A. Saez, Saeed R. Emamian
The elimination of HCl and CO2 in the corresponding cycloadducts makes the unfavourable polar Diels-Alder reaction of 3-chloroindole irreversible.
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A coumarin based gold(I)-alkynyl complex: a new class of supramolecular hydrogelators

1 January, 2015 - 02:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02077D, PaperArtur J. Moro, Bertrand Rome, Elisabet Aguilo, Julia Arcau, Rakesh Puttreddy, Kari Rissanen, Joao Carlos Lima, Laura Rodriguez
A phosphine-gold(I)-alkynyl-coumarin complex, [Au{7-(prop-2-ine-1-yloxy)-1-benzopyran-2-one}(DAPTA)] (1), was synthesized and the formation of long luminescent fibers in solution was characterized via fluorescence microscopy and dynamic light scattering.
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Conformational modulation of peptides using [small beta]-amino benzenesulfonic acid (SAnt)

1 January, 2015 - 02:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02421D, PaperGowri Priya, Amol S. Kotmale, Debamitra Chakravarty, Vedavati G. Puranik, Pattuparambil R. Rajamohanan, Gangadhar J. Sanjayan
This communication describes the utility of the conformationally restricted aromatic [small beta]-amino acid (2-aminobenzenesulfonic acid, SAnt) for inducing various folding interactions in short peptides.
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