Org. and Biomol. Chem.

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RSC - Org. Biomol. Chem. latest articles
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Effective catalysis of imine metathesis by means of fast transiminations between aromatic-aromatic or aromatic-aliphatic amines

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB00107A, PaperMaria Ciaccia, Silvia Pilati, Roberta Cacciapaglia, Luigi Mandolini, Stefano Di Stefano
Transiminations involving aromatic or aliphatic amines were found to be fast enough to be effectively employed in the catalysis of imine metathesis.
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The battle for the "green" polymer. Different approaches for biopolymer synthesis: bioadvantaged vs. bioreplacement

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, 12,2834-2849
DOI: 10.1039/C3OB42339E, Review ArticleNacu Hernandez, R. Christopher Williams, Eric W. Cochran
In this perspective we compare and contrast two distinct approaches to the economical realization of biomaterials.
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Palladium-catalyzed regioselective azidation of allylic C-H bonds under atmospheric pressure of dioxygen

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB00442F, CommunicationHuoji Chen, Wanfei Yang, Wanqing Wu, Huanfeng Jiang
A palladium-catalyzed allylic azidation of alkenes with sodium azide under atmospheric pressure of dioxygen was developed.
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Recent advances in biocompatible nanocarriers for delivery of chemotherapeutic cargoes towards cancer therapy

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB00164H, Review ArticleChung Yen Ang, Si Yu Tan, Yanli Zhao
This review highlights recent advances in multifunctional nanocarriers for controlled and targeted drug delivery in cancer therapy.
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A cyclization-carbonylation-cyclization coupling reaction of (ortho-alkynyl phenyl) (methoxymethyl) sulfides with the palladium(II)-bisoxazoline catalyst

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB00299G, PaperYiyun Jiang, Taichi Kusakabe, Keisuke Takahashi, Keisuke Kato
A CCC-coupling reaction of (o-alkynylphenyl) (methoxymethyl) sulfides, catalyzed by (box)PdII complexes, afforded symmetrical ketones bearing two benzo[b]thiophene groups in good to excellent yields.
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Nucleophilic addition to N-alkoxyamides

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB00389F, PerspectiveTakaaki Sato, Noritaka Chida
Amide-selective nucleophilic addition using N-alkoxyamides minimized extra protecting group manipulations and redox reactions, resulting in the concise total synthesis of gephyrotoxin.
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Synthesis and biological activity of novel bis-indole inhibitors of bacterial transcription initiation complex formation

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, 12,2882-2894
DOI: 10.1039/C4OB00460D, PaperMarcin Mielczarek, Ruth V. Devakaram, Cong Ma, Xiao Yang, Hakan Kandemir, Bambang Purwono, David StC. Black, Renate Griffith, Peter J. Lewis, Naresh Kumar
The synthesis of novel bis-indole amides and glyoxylamides as bacterial transcription complex formation inhibitors and their structure-activity relationships are discussed.
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Asymmetric synthesis of chloroisothreonine derivatives via syn-stereoselective Mannich-type additions across N-sulfinyl-[small alpha]-chloroimines

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB00243A, PaperGert Callebaut, Filip Colpaert, Melinda Nonn, Lorand Kiss, Reijo Sillanpaa, Karl W. Tornroos, Ferenc Fulop, Norbert De Kimpe, Sven Mangelinckx
Mannich-type reactions across N-sulfinyl-[small alpha]-chloroaldimines resulted in syn-stereoselective synthesis of chloroisothreonine derivatives as excellent building blocks.
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Selective synthesis of (Z)-2-enynyl-2-hydroxy-imidazolidine-4,5-diones via Cu(I)-mediated multicomponent coupling of terminal alkynes, carbodiimides and oxalyl chloride

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB00185K, CommunicationFei Zhao, Yuexing Li, Yang Wang, Wen-Xiong Zhang, Zhenfeng Xi
(Z)-2-Enynyl-2-hydroxy-imidazolidine-4,5-diones are synthesized via Cu(I)-mediated (Z)-selective geminal coupling among two terminal alkynes, carbodiimides, and oxalyl chloride. Further transformation is explored.
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Inverse solvent effects in the heterogeneous and homogeneous epoxidation of cis-2-heptene with [2-percarboxyethyl]-functionalized silica and meta-chloroperbenzoic acid

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB00253A, PaperRossella Mello, Jeymy T. Sarmiento-Monsalve, Diana Vargas-Oviedo, Rafael Acerete, Maria Elena Gonzalez-Nunez, Gregorio Asensio
The organized solvent layer on the solid surface determines the reaction rate in the heterogeneous epoxidation of cis-2-heptene.
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Cooperative N-heterocyclic carbene (NHC)-Lewis acid-mediated regioselective umpolung formal [3 + 2] annulations of alkynyl aldehydes with isatins

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, 12,3009-3015
DOI: 10.1039/C4OB00145A, CommunicationYu Zhang, Yingyan Lu, Weifang Tang, Tao Lu, Ding Du
A novel synthesis of spirooxindoles has been developed by cooperative NHC-Lewis acid-mediated formal [3 + 2] annulations of alkynyl aldehydes with isatins.
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Cooperative hydrolysis of aryl esters on functionalized membrane surfaces and in micellar solutions

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB00247D, PaperM. Poznik, B. Konig
Catalytic hydrolysis of peptides, proteins, phosphates or carboxylate esters in nature is catalysed by enzymes, which are efficient, fast and selective.
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Synthesis and identification of proposed biosynthetic intermediates of saxitoxin in the cyanobacterium Anabaena circinalis (TA04) and the dinoflagellate Alexandrium tamarense (Axat-2)

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, 12,3016-3020
DOI: 10.1039/C4OB00071D, CommunicationShigeki Tsuchiya, Yuko Cho, Keiichi Konoki, Kazuo Nagasawa, Yasukatsu Oshima, Mari Yotsu-Yamashita
We synthesized the genetically predicted biosynthetic intermediates of saxitoxin (STX) (1), 2, 6 and 7, and identified 2 and 6 in microorganisms.
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Convergent routes to substituted naphthylamides

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB00339J, PaperNgoc Diem My Tran, Samir Z. Zard
Substituted 1- and 2-naphthylamides can be obtained by the radical addition-cyclisation of amido-containing phenacyl xanthates to vinyl pivalate followed by acid catalysed aromatisation.
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A selenium-contained aggregation-induced "turn-on" fluorescent probe for hydrogen peroxide

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, 12,3004-3008
DOI: 10.1039/C4OB00206G, CommunicationYe-Xin Liao, Kun Li, Ming-Yu Wu, Tong Wu, Xiao-Qi Yu
A novel selenium-contained aggregation-induced "turn-on" fluorescent probe was presented, which could selectively respond to hydrogen peroxide over other ROS in aqueous solution.
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Synthesis of new anionic carbosilane dendrimers via thiol-ene chemistry and their antiviral behaviour

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, Advance Article
DOI: 10.1039/C4OB00162A, PaperMarta Galan, Javier Sanchez Rodriguez, Jose Luis Jimenez, Miguel Relloso, Marek Maly, F. Javier de la Mata, M. A. Munoz-Fernandez, Rafael Gomez
Thiol-ene chemistry, enable the identification of anionic carbosilane dendrimers as readily available, good and safe candidates for vaginal microbicides against HIV.
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Insights into the mechanistic and synthetic aspects of the Mo/P-catalyzed oxidation of N-heterocycles

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, 12,3026-3036
DOI: 10.1039/C4OB00115J, PaperOleg V. Larionov, David Stephens, Adelphe M. Mfuh, Hadi D. Arman, Anastasia S. Naumova, Gabriel Chavez, Behije Skenderi
Mechanistic and synthetic studies of the Mo/P-catalyzed N-oxidation of N-heterocycles with hydrogen peroxide shed light on the role and nature of the catalytically active species.
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Catalytic amounts of triarylaminium salt initiated aerobic oxidative coupling of N-aryl tetrahydroisoquinolines

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, 12,3123-3128
DOI: 10.1039/C3OB42454E, PaperCongde Huo, Cheng Wang, Mingxia Wu, Xiaodong Jia, Xicun Wang, Yong Yuan, Haisheng Xie
A novel, efficient in catalytic amounts, stable radical cation triarylaminium salt induced aerobic oxidative [small alpha]-C-H functionalization of tertiary amines has been developed.
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N-heterocyclic carbene (NHC)-modulated Pd/Cu cocatalyzed three-component synthesis of 2,6-diarylquinolines

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, 12,3114-3122
DOI: 10.1039/C4OB00231H, PaperChen Xu, Hong-Mei Li, Xiao-Er Yuan, Zhi-Qiang Xiao, Zhi-Qiang Wang, Wei-Jun Fu, Bao-Ming Ji, Xin-Qi Hao, Mao-Ping Song
An efficient NHC-modulated Pd/Cu cocatalyzed three-component coupling reaction for the synthesis of 2,6-diarylquinolines via oxidation, cyclization and Suzuki reactions.
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A versatile approach for site-directed spin labeling and structural EPR studies of RNAs

19 April, 2014 - 11:54

Org. Biomol. Chem., 2014, 12,3129-3136
DOI: 10.1039/C3OB42154F, PaperElena S. Babaylova, Anton V. Ivanov, Alexey A. Malygin, Maria A. Vorobjeva, Alia G. Venyaminova, Yuliya F. Polienko, Igor A. Kirilyuk, Olesya A. Krumkacheva, Matvey V. Fedin, Galina G. Karpova, Elena G. Bagryanskaya
We propose and validate a new site-directed spin labeling approach affording EPR distance measurements in long RNAs.
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