Org. and Biomol. Chem.

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RSC - Org. Biomol. Chem. latest articles
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Recognition of bio-relevant dicarboxylate anions by an azacalix[2]arene[2]triazine derivative decorated with urea moieties

19 January, 2015 - 06:17
Org. Biomol. Chem., 2015, Accepted Manuscript
DOI: 10.1039/C4OB02283A, PaperMiguel Santos, Igor Marques, Silvia Carvalho, Cristina Maria Moiteiro, Vitor Felix
A new dichloroazacalix[2]arene[2]triazine receptor (1) with two chiral urea binding moieties is reported. The binding affinity of this macrocycle was evaluated by 1H NMR titrations in CDCl3 for the dicarboxylate...
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Tetrahydrofuranyl and tetrahydropyranyl protection of amino acid side-chains enables synthesis of a hydroxamate-containing aminoacylated tRNA

19 January, 2015 - 06:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02212B, PaperLester J. Lambert, Marvin J. Miller, Paul W. Huber
O-protection using tetrahydrofuranyl or tetrahydropyranyl enabled addition of a hydroxamate-containing unnatural amino acid to a suppressor tRNA, allowing subsequent site-specific incorporation of the amino acid into the transcription factor, TFIIIA.
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Enantioselective carbolithiation of S-alkenyl-N-aryl thiocarbamates: kinetic and thermodynamic control

19 January, 2015 - 06:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02329C, PaperDaniele Castagnolo, Leonardo Degennaro, Renzo Luisi, Jonathan Clayden
Carbolithiation of vinyl thiocarbamates may proceed with the same sense of enantioselectivity with either (-)-sparteine and (+)-sparteine surrogate ligands.
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Highly Regio- and Stereoselective Synthesis of Novel Tri and Tetracyclic Quinoline Architectures Through an Intramolecular [3 + 2] Cycloaddition Reaction

19 January, 2015 - 06:17
Org. Biomol. Chem., 2015, Accepted Manuscript
DOI: 10.1039/C4OB02203C, CommunicationManickam Bakthadoss, Damodharan Kannan, Srinivasan Jayakumar, Varathan Vinayagam
A facile and efficient synthetic protocol was established for the construction of novel tri- and tetracyclic pyrrolo / pyrrolizinoquinoline architectures through in situ formation of azomethine ylide followed by an...
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Pd-catalyzed benzylic C-H oxidation of cyclotriveratrylene - product diversity

19 January, 2015 - 06:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02469A, PaperB. Senthilkumar, R. G. Gonnade, C. V. Ramana
The inner-rim oxidation of CTV has been explored with palladium and an interesting array of CTV derivatives has been obtained by simple changes in the solvent/conditions employed.
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The effect of leaving radical on the formation of tetrahydroselenophene by SHi ring closure: an experimental and computational study

19 January, 2015 - 06:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02434F, PaperAmber N. Hancock, Sofia Lobachevsky, Naomi L. Haworth, Michelle L. Coote, Carl H. Schiesser
Competition kinetic studies augmented with laser-flash photolysis and high-level computational techniques [G3(MP2)-RAD], with [COSMO-RS, SMD] and without solvent correction, provide kinetic parameters for the ring closures of a series of 4-(alkylseleno)butyl radicals.
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The chemical biology of dimethylsulfoniopropionate

19 January, 2015 - 06:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02407A, Review ArticleJeroen S. Dickschat, Patrick Rabe, Christian A. Citron
This review addresses synthesis, biosynthesis, transport and degradation of dimethylsulfoniopropionate and its derivatives.
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Expedient access to [small alpha],[small beta]-difunctionalized azepenes using [small alpha]-halo eneformamides: application to the one-pot synthesis of 2-benzazepanes

19 January, 2015 - 06:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02183E, PaperDaniel P. Bassler, Laura Spence, Amir Alwali, Oliver Beale, Timothy K. Beng
The regioselective synthesis of [small alpha],[small beta]-difunctionalized (alkenyl, aryl, sulfonyl, allyl, or alkynyl) azepenes has been accomplished through [small alpha]-halo eneformamides.
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Exploring the scope of the isothiourea-mediated synthesis of dihydropyridinones

15 January, 2015 - 05:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02408G, PaperPei-Pei Yeh, David S. B. Daniels, Charlene Fallan, Eoin Gould, Carmen Simal, James E. Taylor, Alexandra M. Z. Slawin, Andrew D. Smith
The exploration and expansion of the scope of the isothiourea-mediated synthesis of dihydropyridinones is presented.
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Mixed alkyl aryl phosphonate esters as quenched fluorescent activity-based probes for serine proteases

15 January, 2015 - 05:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02444C, PaperSevnur Serim, Philipp Baer, Steven H. L. Verhelst
The synthesis of quenched fluorescent activity-based probes for serine proteases based on a phosphonate reactive group is reported.
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Energy transfer between amphiphilic porphyrin polymer shells and upconverting nanoparticle cores in water-dispersible nano-assemblies

15 January, 2015 - 05:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02401J, PaperT. Wu, S. Kaur, N. R. Branda
The synthesis and optical properties of water-dispersible nano-assemblies containing upconverting nanoparticles (UCNPs) and porphyrin molecules using a one-pot method is described.
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Diastereoselective desymmetrization of diarylphosphinous acid-borane amides under Birch reduction

15 January, 2015 - 05:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02440K, PaperMarek Stankevic
Birch reduction of symmetrical diarylphosphinous acid-borane amides possessing a chiral amido group, proceeds with diastereoselectivity up to 72%.
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A supramolecular topical gel derived from a non-steroidal anti-inflammatory drug, fenoprofen, is capable of treating skin inflammation in mice

15 January, 2015 - 05:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02344G, PaperJoydeb Majumder, Pavani Yedoti, Parthasarathi Dastidar
A small [small beta]-dipeptide functionalized fenoprofen bioconjugate forms supramolecular gel with menthol containing methylsalicylate solvent. The resulting gel shows topical self-delivery application in treating imiquimod induced skin inflammation in mice.
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Fluoride binding in water with the use of micellar nanodevices based on salophen complexes

15 January, 2015 - 05:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02298J, PaperFlore Keymeulen, Paolo De Bernardin, Ilaria Giannicchi, Luciano Galantini, Kristin Bartik, Antonella Dalla Cort
Uranyl-salophen complexes incorporated into micelles are evaluated as supramolecular nanosystems for the binding of fluoride in water.
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A facile and high-yield formation of dipyrrin-boronic acid dyads and triads: a light-harvesting system in the visible region based on the efficient energy transfer

15 January, 2015 - 05:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02351J, PaperMasaki Yamamura, Shinya Yazaki, Motofumi Seki, Yasunori Matsui, Hiroshi Ikeda, Tatsuya Nabeshima
Artificial light-harvesting systems, Ar,O-BODIPY dyads and triads conjugated with a light harvester, were synthesized in high yield by the reaction of an N2O2-type dipyrrin with boronic acids.
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An improved procedure to prepare 3-methyl-4-nitroalkylenethylisoxazoles and their reaction under catalytic enantioselective Michael addition with nitromethane

15 January, 2015 - 05:17

Org. Biomol. Chem., 2015, Advance Article
DOI: 10.1039/C4OB02109F, PaperMaria Moccia, Robert J. Wells, Mauro. F. A. Adamo
A two-step preparation of 3-methyl-4-nitro-5-alkylethenyl isoxazoles is herein reported. These were reacted with nitromethane under phase-transfer catalysis to provide highly enantioenriched adducts (up to 93% ee).
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Highly selective and sensitive detection of glutathione using mesoporous silica nanoparticles capped with disulfide-containing oligo(ethylene glycol) chains

13 January, 2015 - 04:54

Org. Biomol. Chem., 2015, 13,1017-1021
DOI: 10.1039/C4OB02083A, CommunicationSameh El Sayed, Cristina Gimenez, Elena Aznar, Ramon Martinez-Manez, Felix Sancenon, Maurizio Licchelli
Mesoporous silica nanoparticles loaded with safranin O and capped with disulfide-containing oligo(ethylene glycol) chains were used for the selective and sensitive fluorimetric detection of GSH.
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A chiral borane catalyzed asymmetric hydrosilylation of imines

13 January, 2015 - 04:54

Org. Biomol. Chem., 2015, 13,1013-1016
DOI: 10.1039/C4OB02419B, CommunicationXiaxia Zhu, Haifeng Du
An enantioselective hydrosilylation of imines was achieved using an in situ generated chiral borane to furnish amines with up to 82% ee.
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Water-soluble aryl-extended calix[4]pyrroles with unperturbed aromatic cavities: synthesis and binding studies

13 January, 2015 - 04:54

Org. Biomol. Chem., 2015, 13,1022-1029
DOI: 10.1039/C4OB02108H, PaperD. Hernandez-Alonso, S. Zankowski, L. Adriaenssens, P. Ballester
An aryl-extended calix[4]pyrrole receptor with four carboxylic groups at the lower rim binds N-oxides in water with high stability constants.
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Investigation of end processing and degradation of premature tRNAs and their application to stabilization of in vitro transcripts in wheat germ extract

13 January, 2015 - 04:54

Org. Biomol. Chem., 2015, 13,1008-1012
DOI: 10.1039/C4OB02221A, CommunicationAtsushi Ogawa, Yasunori Doi
We investigated the end processing and degradation of premature tRNAs in wheat germ extract (left), which led to the findings of end protectors for efficiently stabilizing an in vitro transcript (purple, right).
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