Search results for "Pram"
showing 4 items of 1064 documents
Synthesis, X-Ray Structure, Tautomerism Aspect, and Chemical Insight of The 3-(1H-Indol-2-yl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazin-6-ol
2021
The 3-(1H-indol-2-yl)-7H-[1,2,4]triazolo[3,4-b][1,3,4]thiadiazin-6-ol 2 was obtained exclusively in the enol configuration starting from triazolyl-indole derivative 1 and alkyl halo-esters in the presence of K2CO3. Chemical structure elucidations with the aid of physicochemical characterizations were used to predict its molecular structure while single crystal X-ray diffraction technique was used to shed the light on the supramolecular structure of 2. DFT calculations agreed very well with the reported X-ray structure where the most stable form thermodynamically is the enol form. Its optimized geometry agreed very well with the experimental structure where the correlation coefficients betwe…
From endosomes onwards : membranes, lysosomes and viral capsid interactions
2009
Kirsi Pakkanen haki väitöstutkimuksessaan monitieteellisen lähestymistavan avulla uusia näkökulmia virustutkimukseen. Tutkimus tuo uutta tietoa lipidikalvojen merkityksestä viruksen ja viruksen isäntäsolun elämässä. Tutkimuksessa selvisi, että koiran parvovirus, jota tutkimuksessa käytettiin mallina parvoviruksille ja yleisemmin vaipattomille viruksille, tarvitsee tietynlaisia isäntäsolun lipidikalvojen ominaisuuksia voidakseen vapautua solunsisäisten endosomirakkuloiden sisältä. Erityisen tärkeää tässä vapautumisessa näytti olevan kalvojen juoksevuus sekä jäykkien alueiden hallittu järjestäytyminen kolesterolin avulla. Hyödyntämällä molekyylejä, lääkeaineita, jotka muuttavat kolesteroliavu…
Thermodynamically driven self-assembly of pyridinearene to hexameric capsules
2019
Pyridinearene macrocycles have previously shown unique host–guest properties in their capsular dimers including endo complexation of neutral molecules and exo complexation of anions. Here, we demonstrate for the first time the formation of hydrogen bonded hexamer of tetraisobutyl-octahydroxypyridinearene in all three states of matter – gas phase, solution and solid-state. Cationic tris(bipyridine)ruthenium(II) template was found to stabilize the hexamer in gas phase, whereas solvent molecules do this in condensed phases. In solution, the capsular hexamer was found to be the thermodynamically favoured self-assembly product and transition from dimer to hexamer occurred in course of time. The …