Chem. Commun.

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Sequence-selective DNA binding with cell-permeable oligoguanidinium-peptide conjugates

21 February, 2015 - 20:17

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C4CC09525A, CommunicationJesus Mosquera, Mateo I. Sanchez, Julian Valero, Javier de Mendoza, M. Eugenio Vazquez, Jose L. Mascarenas
Conjugation of a short peptide fragment from a bZIP protein to an oligoguanidinium tail results in a DNA-binding miniprotein that selectively interacts with composite sequences containing the peptide-binding site next to an A/T-rich tract.
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Reduction-responsive dithiomaleimide-based nanomedicine with high drug loading and FRET-indicated drug release

21 February, 2015 - 20:17

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C5CC00148J, CommunicationHua Wang, Ming Xu, Menghua Xiong, Jianjun Cheng
We developed a dithiomaleimide-based nanomedicine with high drug loading, GSH-responsiveness, and FRET-indicated drug release.
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Sensitive fluorescence detection of lysozyme using a tris(bipyridine)ruthenium(II) complex containing multiple cyclodextrins

21 February, 2015 - 20:17
Chem. Commun., 2015, Accepted Manuscript
DOI: 10.1039/C5CC00428D, CommunicationFan Zhang, Yingying Zhao, hong Chen, Xiuhua Wang, Qiong Chen, Pingang He
A sensitive fluorescence detection method for lysozyme has been proposed using a tris(bipyridine)ruthenium(II) complex containing multiple cyclodextrin units. Based on the host-guest recognition between cyclodextrin cavities on these metallocyclodextrins and...
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An outstanding catalyst for the oxygen-mediated oxidation of arylcarbinols, arylmethylene and arylacetylene compounds

21 February, 2015 - 20:17

Chem. Commun., 2015, Advance Article
DOI: 10.1039/C5CC00750J, CommunicationG. Urgoitia, R. SanMartin, M. T. Herrero, E. Dominguez
A more sustainable procedure for several aerobic oxidations, including a new oxygen-mediated cleavage of alkynes, is described.
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Nickel-catalyzed thiolation of unactivated aryl C-H bonds: efficient access to diverse aryl sulfides

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4069-4072
DOI: 10.1039/C4CC10446C, CommunicationSheng-Yi Yan, Yue-Jin Liu, Bin Liu, Yan-Hua Liu, Bing-Feng Shi
A nickel-catalyzed thiolation of unactivated C(sp2)-H bonds with disulfides employing the PIP directing group was described. This process uses a catalytic nickel catalyst and no metallic oxidants or cocatalysts are required. Moreover, the reaction tolerates various important functional groups and heteroarenes.
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Asymmetric organocatalytic synthesis of quaternary [small alpha]-hydroxy phosphonates: en route to [small alpha]-aryl phosphaisoserines

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4077-4080
DOI: 10.1039/C4CC10390D, CommunicationInmaculada Serrano, David Monge, Eleuterio Alvarez, Rosario Fernandez, Jose M. Lassaletta
The dual activation of acyl phosphonates and formaldehyde tert-butyl hydrazone by a BINAM-derived bis-urea catalyst is the key to achieve high reactivities and enantioselectivities in the synthesis of densely functionalized quaternary [small alpha]-hydroxy phosphonates.
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Microwave selective effect: a new approach towards oxygen inhibition removal for highly-effective NO decomposition by microwave catalysis over BaMnxMg1-xO3 mixed oxides at low temperature under excess oxygen

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4073-4076
DOI: 10.1039/C4CC10288F, CommunicationWentao Xu, Jicheng Zhou, Yingpiao Ou, Yushang Luo, Zhimin You
Oxygen inhibition removal by microwave selective effect under microwave irradiation.
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Field-induced slow magnetic relaxation of octahedrally coordinated mononuclear Fe(III)-, Co(II)-, and Mn(III)-containing polyoxometalates

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4081-4084
DOI: 10.1039/C4CC09435B, CommunicationRinta Sato, Kosuke Suzuki, Takuo Minato, Masahiro Shinoe, Kazuya Yamaguchi, Noritaka Mizuno
Polyoxometalates with highly distorted octahedrally coordinated mononuclear Fe(III)-, Co(II)-, and Mn(III) ions have been synthesized, and they showed large magnetic anisotropy and single-molecule magnet behavior.
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Oligonucleotides containing a piperazino-modified 2[prime or minute]-amino-LNA monomer exhibit very high duplex stability and remarkable nuclease resistance

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4024-4027
DOI: 10.1039/C5CC00322A, CommunicationChenguang Lou, Birte Vester, Jesper Wengel
Incorporation of a novel piperazino-modified 2[prime or minute]-amino-LNA monomer (PipLNA-T) into oligonucleotides leads to a pronounced affinity increase against complementary DNA and RNA and a strong stabilising effect against 3[prime or minute]-exonucleolytic degradation.
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Copper-catalyzed radical cascade cyclization for the synthesis of phosphorated indolines

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4101-4104
DOI: 10.1039/C4CC10267C, CommunicationHong-Yu Zhang, Liu-Liang Mao, Bin Yang, Shang-Dong Yang
A novel and convenient approach to the synthesis of various phosphorated indolines via a copper-catalyzed radical cascade cyclization reaction has been developed.
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Facile one-pot synthesis of porphyrin based porous polymer networks (PPNs) as biomimetic catalysts

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4005-4008
DOI: 10.1039/C4CC09479D, CommunicationLanfang Zou, Dawei Feng, Tian-Fu Liu, Ying-Pin Chen, Stephen Fordham, Shuai Yuan, Jian Tian, Hong-Cai Zhou
Two stable porphyrin based porous polymer networks (PPNs) were synthesized, and their biomimetic catalytic activities were studied.
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An artificial CO-releasing metalloprotein built by histidine-selective metallation

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,3993-3996
DOI: 10.1039/C4CC10204E, CommunicationInes S. Albuquerque, Helia F. Jeremias, Miguel Chaves-Ferreira, Dijana Matak-Vinkovic, Omar Boutureira, Carlos C. Romao, Goncalo J. L. Bernardes
We report the design and synthesis of an aquacarbonyl Ru(II) dication cis-[Ru(CO)2(H2O)4]2+ reagent for histidine (His)-selective metallation of interleukin (IL)-8 at site 33.
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Copper-catalysed cross-coupling of arylzirconium reagents with aryl and heteroaryl iodides

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4009-4012
DOI: 10.1039/C5CC00116A, CommunicationSurendra Thapa, Prakash Basnet, Santosh K. Gurung, Ramesh Giri
An unprecedented CuI-catalysed cross-coupling of arylzirconium reagents with aryl and heteroaryl iodides is reported. Mechanistic studies with a Cp2ZrAr2 complex revealed that Cp2Zr(Ar)(Cl) is the reactive species that undergoes transmetalation with (PN-1)CuI.
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AIEE active perylene bisimide supported mercury nanoparticles for synthesis of amides via aldoximes/ketoximes rearrangement

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4085-4088
DOI: 10.1039/C4CC10273H, CommunicationSandeep Kaur, Manoj Kumar, Vandana Bhalla
AIEE active perylene bisimide derivatives 3 serve as reactors and stabilizers for the preparation of HgNPs which exhibit high catalytic efficiency in the synthesis of amides via aldoximes/ketoximes rearrangement.
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A nonheme manganese(IV)-oxo species generated in photocatalytic reaction using water as an oxygen source

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4013-4016
DOI: 10.1039/C4CC10411K, CommunicationXiujuan Wu, Xiaonan Yang, Yong-Min Lee, Wonwoo Nam, Licheng Sun
A nonheme manganese(IV)-oxo complex was generated in the photocatalytic reaction of [MnII(BQCN)]2+ with [RuII(bpy)3]Cl2, [CoIII(NH3)5Cl]Cl2, and water as an oxygen source.
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Evidence of chitosan-mediated reduction of Au(III) to Au(0) nanoparticles under electron beam by using OH[radical dot] and e-aq scavengers

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4017-4020
DOI: 10.1039/C4CC09346A, CommunicationKhoa Dang Nguyen VO, Christelle Kowandy, Laurent Dupont, Xavier Coqueret
The radiolytic synthesis of gold nanoparticles from Au(III)-chitosan solutions does not exclusively follow the direct reduction pathway involving e-aq. Irradiation generates short-lived and long-lived reductive species derived from chitosan that efficiently convert Au(III) into Au(0) which aggregates to form clusters.
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Self-catalysis in thermal hysteresis during random-coil to helix-dimer transition of the sulfonamidohelicene tetramer

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4040-4043
DOI: 10.1039/C4CC10418H, CommunicationMasanori Shigeno, Yo Kushida, Masahiko Yamaguchi
The sulfonamidohelicene tetramer changes its structure between a random-coil and a helix-dimer, by which molecular thermal hysteresis appears.
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Nuclease resistant oligonucleotides with cell penetrating properties

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4044-4047
DOI: 10.1039/C4CC08837A, CommunicationStefan Milton, Dmytro Honcharenko, Cristina S. J. Rocha, Pedro M. D. Moreno, C. I. Edvard Smith, Roger Stromberg
2[prime or minute]-O-AECM modified oligonucleotides provide a combination of remarkable properties, such as high stability towards degradation, stable duplexes with RNA and enhanced cellular uptake.
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The development of a highly photostable and chemically stable zwitterionic near-infrared dye for imaging applications

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,3989-3992
DOI: 10.1039/C4CC08814J, CommunicationDongdong Su, Chai Lean Teoh, Animesh Samanta, Nam-Young Kang, Sung-Jin Park, Young-Tae Chang
ZWCC, a new zwitterionic NIR dye with high photostability and enhanced chemical stability, can be easily functionalized for biological applications.
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Palladium-catalyzed oxidative carbamoylation of isoquinoline N-oxides with formylamides by means of dual C-H oxidative coupling

21 February, 2015 - 20:17

Chem. Commun., 2015, 51,4097-4100
DOI: 10.1039/C4CC10140E, CommunicationBo Yao, Chen-Liang Deng, Yan Liu, Ri-Yuan Tang, Xing-Guo Zhang, Jin-Heng Li
A new palladium-catalyzed oxidative carbamoylation reaction of isoquinoline N-oxides with formylamides for the synthesis of isoquinoline-1-carboxamides is described.
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