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Angiotensin II analogs comprised of Pro-Amb ([gamma]-turn scaffold) as angiotensin II type 2 (AT2) receptor agonists

01-Dec-2015 | Ganesh S Jedhe; Amol Kotmale; Pattuparambil R Rajamohanan; Santosh Pasha; G J Sanjayan, Chemical Communication, 2015

We describe herein design, synthesis and conformational investigation of Pro-Amb (proline-3-amino-2-methoxybenzoic acid) incorporated Angiotensin II and its truncated analogues. Solution-state NMR and CD studies suggest γ-turn-like conformation in Pro-Amb analogs in aqueous solution. Furthermore, ...


Thermodynamics of Solvent Interaction with the Metal – Organic Framework MOF-5

01-Dec-2015 | Zamirbek Akimbekov; Di Wu; Carl K. Brozek; Mircea Dinca; Alexandra Navrotsky, Physical Chemistry Chemical Physics, 2015

The inclusion of solvent in metal organic framework (MOF) materials is a highly specific form of guest – host interaction. In this work, the energetics of solvent – MOF-5 interactions has been investigated by solution calorimetry in 5 M sodium hydroxide (NaOH) at room temperature. Solution ...


On the Atomic Structure of Cocaine in Solution

01-Dec-2015 | Andrew James Johnston; Sebastian Busch; Luis Carlos Pardo; Samantha Kim Callear; Philip Biggin; Sylvia McLain, Physical Chemistry Chemical Physics, 2015

Cocaine is an amphiphilic drug which has the ability to cross the blood-brain barrier (BBB). Here, a combination of neutron diffraction and computation has been used to investigate the atomic scale structure of cocaine in aqueous solutions. Both the observed conformation and hydration of cocaine ...


Ligand-free Pd catalyzed cross-coupling reactions in an aqueous hydrotropic medium

01-Dec-2015 | Sanjay N. Jadhav; Arjun S. Kumbhar; Chadrashekhar V. Rode; Rajashri S. Salunkhe, Green Chemistry, 2015

A simple, efficient and ligand-free protocol for the Suzuki–Miyaura reaction and base-free Heck–Matsuda reactions under mild reaction conditions have been developed over palladium supported on activated carbon (Pd/C) in an aqueous hydrotropic solution. The catalyst Pd/C was fully characterized by ...


Solution combustion synthesis of strontium aluminate, SrAl2O4, powders: single-fuel versus fuel-mixture approach

01-Dec-2015 | Robert Ianos; Roxana Istratie; Cornelia Pacurariu; Radu Lazau, Physical Chemistry Chemical Physics, 2015

Solution combustion synthesis of strontium aluminate, SrAl2O4, via the classic single-fuel approach and the modern fuel-mixture approach was investigated in relation to the synthesis conditions, powder properties and thermodynamic aspects. The single-fuel approach (urea or glycine) did not yield ...


Co-Sensitization of TiO2 Films with a Porphyrin Dye and an Organic Dye for Quasi-Solid-State Dye-Sensitized Solar Cells

01-Dec-2015 | Suhua Fan; Xuefeng Lu; Hong Sun; Gang Zhou; Yuan Jay Chang; Zhongsheng Wang, Physical Chemistry Chemical Physics, 2015

To obtain a broad spectral response in the visible region, the TiO2 film is co-sensitized with a porphyrin dye (FNE57 or FNE59) and an organic dye (FNE46). It is found that the stepwise co-sensitization in one single dye solution followed by in another single dye solution is better than the ...


The Morphology and Spherulite Growth of Stereocomplex in the Linear and Branched PLLA/PDLA Blends: Effect of Molecular Weights and Structure

01-Dec-2015 | Jun Shao; Yanmei Guo; Sheng Xiang; Dongdong Zhou; Xinchao Bian; Jingru Sun; Gao Li; Haoqing Hou, CrystEngComm, 2015

The linear and three armed poly(L-lactide)/poly(D-lactide) (PLLA/PDLA, 3PLLA/3PDLA and 3PLLA/PDLA) specimens were prepared through solution mixing method, and the morphology and the spherulites growth of poly(lactide) stereocomplex crystalllites (PLA sc) from the melt with various structures and ...


Phototransformation patterns of the antiplatelet drug tirofiban in aqueous solution, relevant to drug delivery and storage

01-Dec-2015 | Théo Henriet; Philippe-Henri Secrétan; Fatma Amrani; Hassane Sadou-Yayé; Mélisande Bernard; Audrey Solgadi; Najet Ya ..., New Journal of Chemistry, 2015

Tirofiban is a synthetic, nonpeptidic fibrinogen receptor antagonist used as an antiplatelet drug for intravenous delivery. As the active pharmaceutical ingredient may undergo light exposure during manufacturing, storage and/or delivery, there is a need to acquire an extensive knowledge of its ...


Excited-state dynamics of guanosine in aqueous solution revealed by time-resolved photoelectron spectroscopy: experiment and theory

01-Dec-2015 | Franziska Buchner; Berit Heggen; Hans-Hermann Ritze; Walter Thiel; Andrea Lübcke, Physical Chemistry Chemical Physics, 2015

Time-resolved photoelectron spectroscopy is performed on aqueous guanosine solution to study its excited-state relaxation dynamics. Experimental results are complemented by surface hopping dynamic simulations and evaluation of the excited-state ionization energy by Koopmans' theorem. Two ...


Mutagenesis study to disrupt electrostatic interactions on the twofold symmetry interface of Escherichia coli bacterioferritin

01-Dec-2015 | Yu Zhang; Lijun Wang; Maziar S. Ardejani; Nur Fazlina Aris; Xun Li; Brendan P. Orner; Fei Wang, Journal of Biochemistry, 2015

Ferritins and other cage proteins have been utilized as models to understand the fundamentals of protein folding and self-assembly. The bacterioferritin (BFR) from Escherichia coli, a maxi-ferritin made up of 24 subunits, was chosen as the basis for a mutagenesis study to investigate the role of ...


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