Results 191 to 200 of about 9,528 (245)

Macrocycle formation-mediated augmentation in reactive oxygen species production. [PDF]

Chem Sci
Liu A, Xin Y, Zhu YK, Jin YH, Yang Y, Chen H, Li MH, Lou XY, Wang X, Gao H, Yang YW.   +10 more
europepmc   +1 more source

Akamptisomerism Beyond Porphyrins: Bond Angle Reflection and Stereochemical Divergences in Corrole- and Porphyrin-Anchored B-O-B Bridges. [PDF]

Inorg Chem
de Andrade KN, Rocha PLL, de Miranda DB, Raffaeli NM, Ferreira GB, Fiorot RG.   +5 more
europepmc   +1 more source

Direct Selection of Functional De Novo Macrocycles for Activation of On-Cellulo Insulin Receptor. [PDF]

Angew Chem Int Ed Engl
Kuo YH, Mihara E, Takagi J, Suga H.
europepmc   +1 more source

Introduction: Macrocycles [PDF]

Chemical Reviews, 2019
Andrei K Yudin
exaly   +3 more sources

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Macrocyclic amphiphiles

Chemical Society Reviews, 2015
This review describes recent results in the investigation of macrocyclic amphiphiles, which are classified based on different macrocyclic frameworks including cyclodextrins, calixarenes, cucurbiturils, pillararenes, and other macrocycles involved.
Kecheng, Jie, Yujuan, Zhou, Yong, Yao, Feihe, Huang   +3 more
openaire   +2 more sources

Macrocycle Breathing in [2]Rotaxanes with Tetralactam Macrocycles

The Journal of Organic Chemistry, 2010
The structural dynamics of two pairs of [2]rotaxanes were compared using variable-temperature NMR. Each rotaxane had a surrounding tetralactam macrocycle with either 2,6-pyridine dicarboxamide or isophthalamide bridging units. Differences were observed in two types of rotational processes: spinning of the phenylene wall units in the surrounding ...
Ivan, Murgu, Jeffrey M, Baumes, Jens, Eberhard, Jeremiah J, Gassensmith, Easwaran, Arunkumar, Bradley D, Smith   +5 more
openaire   +2 more sources

Direct conversion of macrocyclic furans into macrocyclic isothiazoles

Chemical Communications, 2002
The first calixhetarenes with more than one heteroatom in the constituent rings are prepared in one step by treatment of calix[4]furan 1a and calix[6]furan 1b with ethyl carbamate, thionyl chloride and pyridine to give 2, 3, 4 and 5, 6, 7 respectively; these products have been characterised by X-ray crystallography which reveals that in 2 all eight ...
Jérôme, Guillard, Otto, Meth-Cohn, Charles W, Rees, Andrew J P, White, David J, Williams   +4 more
openaire   +2 more sources

Tuning the size of macrocyclic cavities in trianglimine macrocycles

Organic & Biomolecular Chemistry, 2005
The synthesis of aromatic dicarboxaldehydes is described along with their reactivity in the [3 + 3] cyclocondensation reaction with (1R,2R)-diaminocyclohexane to give trianglimine macrocycles. In particular, the scope and limitation of the reaction with regard to complete control of the cavity size of the macrocycles is discussed producing a total of ...
Nikolai, Kuhnert, Nicolai, Burzlaff, Chirag, Patel, Ana, Lopez-Periago   +3 more
openaire   +2 more sources

Reversible Macrocycle-to-Macrocycle Interconversion Driven by Solvent Selection

Journal of the American Chemical Society, 2023
Macrocycle-to-macrocycle interconversions are of interest because they can allow access to a variety of structures. However, reversible interconversion between different sized macrocycles remains challenging to control. Herein, we report a facile one-pot synthesis of a series of self-assembled macrocycles from readily prepared α,α'-linked oligopyrrolic
Fei Wang, Xiangling Shi, Yi Zhang, Wei Zhou, Aimin Li, Yuanchu Liu, Jonathan L. Sessler, Qing He   +7 more
openaire   +2 more sources

The macrocyclic effect in tetraaza-macrocyclic ligands

Inorganica Chimica Acta, 1980
Abstract The origin of the Macrocyclic Effect [1] in complexes of cyclam as compared with those of its open-chain analogue 2,3,2- tet is discussed. It is not readily apparent that the presence of four secondary (2°) nitrogens in cyclam , as opposed to two primary (1°) and two 2° in 2,3,2- tet should make much difference, since the pK a 's of 2 ...
R.D. Hancock, G.J. McDougall
openaire   +1 more source