Org. and Biomol. Chem.

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Fructose controlled ionophoric activity of a cholate-boronic acid

3 April, 2014 - 07:54

Org. Biomol. Chem., 2014, 12,2576-2583
DOI: 10.1039/C4OB00165F, PaperOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.James R. D. Brown, Inmaculada C. Pintre, Simon J. Webb
The transport of Na+ through phospholipid bilayers by Wulff-type boronic acids at pH 8.2 is reported. Concentrations of fructose greater than 5 mM strongly inhibited ionophoric activity.
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A nanomotor involves a metastable, left-handed DNA duplex

3 April, 2014 - 07:54

Org. Biomol. Chem., 2014, 12,2543-2546
DOI: 10.1039/C4OB00317A, CommunicationYingmei Li, Chuan Zhang, Cheng Tian, Chengde Mao
A metastable left-handed DNA is used to power a DNA nanomotor by non-toehold-mediated strand displacement.
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Palladium catalyzed N-H bond insertion and intramolecular cyclization cascade: the divergent synthesis of heterocyclics

3 April, 2014 - 07:54

Org. Biomol. Chem., 2014, 12,2533-2537
DOI: 10.1039/C4OB00001C, CommunicationDong Ding, Gang Liu, Guangyang Xu, Jian Li, Guoping Wang, Jiangtao Sun
A palladium-catalyzed one-pot procedure of N-H insertion and Heck cyclization/base promoted cyclization has been developed.
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Pd(II)-catalyzed oxidative alkoxycarbonylation of 2-phenoxypyridine derivatives with CO and alcohols

3 April, 2014 - 07:54

Org. Biomol. Chem., 2014, 12,2538-2542
DOI: 10.1039/C4OB00084F, CommunicationBin Liu, Huai-Zhi Jiang, Bing-Feng Shi
A Pd(II)-catalyzed oxidative alkoxycarbonylation of phenol derivatives with atmospheric pressure of CO-O2 and alcohols has been achieved.
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Copper-catalyzed benzylic C(sp3)-H alkoxylation of heterocyclic compounds

3 April, 2014 - 07:54

Org. Biomol. Chem., 2014, 12,2528-2532
DOI: 10.1039/C4OB00215F, CommunicationNoriaki Takemura, Yoichiro Kuninobu, Motomu Kanai
Intra- and intermolecular C(sp3)-H alkoxylation on a gram scale.
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Versatile C3-symmetric scaffolds and their use for covalent stabilization of the foldon trimer

3 April, 2014 - 07:54

Org. Biomol. Chem., 2014, 12,2606-2614
DOI: 10.1039/C3OB42251H, PaperOpen Access Open Access Creative Commons Licence&nbsp This article is licensed under a Creative Commons Attribution 3.0 Unported Licence.Arne Berthelmann, Johannes Lach, Melissa A. Grawert, Michael Groll, Jutta Eichler
Attachment of foldon monomers to a trimesic acid scaffold enhances thermal stability of the trimer, while maintaining the correct fold.
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Diversity oriented synthesis of novel haloglycolipids potentially useful for crystallization of integral membrane proteins

3 April, 2014 - 07:54

Org. Biomol. Chem., 2014, 12,2615-2625
DOI: 10.1039/C3OB42308E, PaperLaxminarayan Sahoo, Anadi Singhamahapatra, Duraikkannu Loganathan
5-Halo triazole linked glycolipids, potentially useful for extraction and crystallization of integral membrane proteins synthesized by Cu(I) catalyzed click reaction.
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Molecular binding behavior of a bispyridinium-containing bis([small beta]-cyclodextrin) and its corresponding [2]rotaxane towards bile salts

3 April, 2014 - 07:54

Org. Biomol. Chem., 2014, 12,2559-2567
DOI: 10.1039/C3OB42103A, PaperYing-Ming Zhang, Ze Wang, Yong Chen, Hong-Zhong Chen, Fei Ding, Yu Liu
The molecular binding behavior of a bispyridinium-bridged bis([small beta]-cyclodextrin) and its corresponding [2]rotaxane with a series of bile salts was systematically studied, revealing a significant conformational change upon host-guest complexation.
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Isovanillin derived N-(un)substituted hydroxylamines possessing an ortho-allylic group: valuable precursors to bioactive N-heterocycles

3 April, 2014 - 07:54

Org. Biomol. Chem., 2014, 12,2552-2558
DOI: 10.1039/C3OB42460J, PaperBalakrishna Dulla, Neelima D. Tangellamudi, Sridhar Balasubramanian, Swapna Yellanki, Raghavender Medishetti, Rakesh Kumar Banote, Girish Hari Chaudhari, Pushkar Kulkarni, Javed Iqbal, Oliver Reiser, Manojit Pal
Isovannillin based N-heterocycles are synthesized and evaluated for their potential anxiogenic properties.
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Recent progress on asymmetric organocatalytic construction of chiral cyclohexenone skeletons

3 April, 2014 - 07:54

Org. Biomol. Chem., 2014, 12,2499-2513
DOI: 10.1039/C3OB42293C, Review ArticleXin Yang, Jun Wang, Pengfei Li
Chiral cyclohex-2-enones are important intermediates in synthetic chemistry as well as in the life science industries. In this focus review, recent advances in the organocatalytic asymmetric synthesis of chiral cyclohex-2-enone skeletons are summarized. The reaction mechanisms are also briefly discussed.
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A direct access to bioactive fused N-heterocyclic acetic acid derivatives

3 April, 2014 - 07:54

Org. Biomol. Chem., 2014, 12,2514-2518
DOI: 10.1039/C3OB42535E, CommunicationRaju Adepu, A. Rajitha, Dipali Ahuja, Atul Kumar Sharma, B. Ramudu, Ravikumar Kapavarapu, Kishore V. L. Parsa, Manojit Pal
A Cu-catalyzed domino reaction afforded novel fused N-heterocycles as potential PDE4 inhibitors.
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Mild gold-catalyzed three-component dehydrogenative coupling of terminal alkynes to amines and indole-2-carboxaldehyde

3 April, 2014 - 07:54

Org. Biomol. Chem., 2014, 12,2523-2527
DOI: 10.1039/C3OB42431F, CommunicationJian Li, Hongni Wang, Jiangtao Sun, Yang Yang, Li Liu
A mild gold-catalyzed three-component dehydrogenative coupling of terminal alkynes to amines and indole-2-carboxaldehyde has been developed, which provides a practical synthetic strategy for the synthesis of indole derivatives.
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Selective aliphatic carbon-hydrogen bond activation of protected alcohol substrates by cytochrome P450 enzymes

1 April, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,2479-2488
DOI: 10.1039/C3OB42417K, PaperStephen G. Bell, Justin T. J. Spence, Shenglan Liu, Jonathan H. George, Luet-Lok Wong
Protected cyclohexanol and cyclohex-2-enol substrates were efficiently and selectively oxidised by different P450cam mutants providing a general methodology for generating substituted diols using biocatalysts.
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Acyclic CB[n]-type molecular containers: effect of solubilizing group on their function as solubilizing excipients

1 April, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,2413-2422
DOI: 10.1039/C3OB42603C, PaperBen Zhang, Peter Y. Zavalij, Lyle Isaacs
Acyclic CB[n]-type receptors with sulfonate solubilizing groups function best as hosts for soluble guests and solubilizing agents for insoluble drugs.
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Tandem halogenation/Michael-initiated ring-closing reaction of [small alpha],[small beta]-unsaturated nitriles and activated methylene compounds: one-pot diastereoselective synthesis of functionalized cyclopropanes

1 April, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,2427-2435
DOI: 10.1039/C4OB00087K, PaperXiaoqing Xin, Qian Zhang, Yongjiu Liang, Rui Zhang, Dewen Dong
One-pot diastereoselective synthesis of cyclopropanes is developed from [small alpha],[small beta]-unsaturated nitriles and doubly activated methylene compounds under very mild conditions.
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Bi(OTf)3-catalyzed three-component synthesis of [small alpha]-amino acid derivatives

1 April, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,2356-2359
DOI: 10.1039/C4OB00265B, CommunicationAngelika E. Schneider, Tamara Beisel, Andrej Shemet, Georg Manolikakes
A highly efficient Bi(OTf)3-catalyzed three-component synthesis of arylglycines from a (sulfon)amide, glyoxalate and arene is described.
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Co(III)(salen)-catalyzed phenolic kinetic resolution of two stereocentered benzyloxy and azido epoxides: its application in the synthesis of ICI-118,551, an anti-hypertensive agent

1 April, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,2349-2355
DOI: 10.1039/C3OB42501K, CommunicationPratibha U. Karabal, Dayanand A. Kamble, Arumugam Sudalai
The salen Co(III)-catalyzed phenolic kinetic resolution of racemic anti- or syn-azido and benzyloxy epoxides provides a practical route to a range of enantioenriched anti- or syn-1-aryloxy-3-azido or benzyloxy-2-alcohols.
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The issue of 'molecular radiators' in microwave-assisted reactions. Computational calculations on ring closing metathesis (RCM)

1 April, 2014 - 07:17

Org. Biomol. Chem., 2014, 12,2436-2445
DOI: 10.1039/C3OB42536C, PaperA. M. Rodriguez, P. Prieto, A. de la Hoz, A. Diaz-Ortiz, J. I. Garcia
Computational calculations on ring closing metathesis clarify the influence of molecular radiators in Microwave Assisted Organic Synthesis (MAOS).
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