Search results for "amiinit"
showing 10 items of 22 documents
Rational drug discovery : structural studies of protein-ligand complexes
2011
Water-Soluble Cuprizone Derivative: Synthesis, Characterization, and in Vitro Studies
2019
The cuprizone mouse model is one of the most accepted model systems for the investigation of oligodendrocyte degeneration, a process critically involved in the pathogenesis of diseases such as multiple sclerosis or schizophrenia. In order to substitute the in vivo experiments by in vitro approaches, the amine derivative BiMPi is introduced as a water-soluble alternative to cuprizone. Regarding superoxide dismutase activity, toxicity for oligodendrocytes, and disturbance of mitochondrial membrane potential, BiMPi shows similar in vitro effects as is observed in vivo for cuprizone. peerReviewed
A study on the fragmentation of sulfuric acid and dimethylamine clusters inside an atmospheric pressure interface time-of-flight mass spectrometer
2022
Abstract. Sulfuric acid and dimethylamine vapours in the atmosphere can form molecular clusters, which participate in new particle formation events. In this work, we have produced, measured, and identified clusters of sulfuric acid and dimethylamine using an electrospray ionizer coupled with a planar-differential mobility analyser, connected to an atmospheric pressure interface time-of-flight mass spectrometer (ESI–DMA–APi-TOF MS). This set-up is suitable for evaluating the extent of fragmentation of the charged clusters inside the instrument. We evaluated the fragmentation of 11 negatively charged clusters both experimentally and using a statistical model based on quantum chemical data. Th…
Inter-domain interactions in filamins
2014
Filamiinin ja pernan tyrosiinikinaasin sitoutuminen sekä vuorovaikutuksen merkitys verihiutaleiden signaloinnissa
2013
Hyytymän muodostuminen tapahtuu verisuoneen kohdistuneen vaurion seurauksena verenvuodon tyrehdyttämiseksi. Hyytymä voi muodostua myös verisuonen pinnalle silloinkin kun verenvuotoa ei esiinny. Irrotessaan verenvuodon mukaan hyytymä voi olla hengenvaarallinen. Erilaiset hyytymän muodostamat veritulpat ovat merkittävä kuolinsyy vuosittain. Verihiutaleet ovat keskeinen tekijä tässä tapahtumassa. Niiden aktivaatio tapahtuu kalvoreseptoreiden ja solun sisäisen signaloinnin monimutkaisesta vuorovaikutuksesta. Tämän tutkimuksen kohteina ovat pernan tyrosiinikinaasi ja filamiini A, joiden välinen vuorovaikutus on tärkeää verihiutaleiden toiminnalle. Verihiutaleet, joissa tämä vuorovaikutus on häir…
Revisited Dual Luminescence of 2,2′-Dipyridylamine Hydrochloride in Solution and Physical Processes behind It
2018
One-Pot Synthesis, X-ray Single Crystal and Molecular Insight of Enaminone-Based β-Morpholino-/N-Methylpiperazinyl-/Pyrrolidinylpropiophenone
2020
One-pot synthesis of three enaminones, (E)-1-(4-chlorophenyl)-3-morpholinoprop-2-en-1-one 1, (E)-1-(4-chlorophenyl)-3-(4-methylpiperazin-1-yl)prop-2-en-1-one 2, and (E)-1-(4-chlorophenyl)-3-(pyrrolidin-1-yl)prop-2-en-1-one 3 were achieved. The synthetic protocol via three components reaction of p-chloroacetophenone with DMFDMA (N,N-dimethylformamid-dimethylacetal) and the corresponding secondary amines (morpholine/N-methylpiperazine/pyrrolidine) in dioxane under heating for 2.5–4 h at 102 °C yielded the requisite enaminones. This protocol has the advantage of no separation of intermediate, no need for column purification with quantitative yield for the target compounds. The chemical feature…
Non-syndromic Mitral Valve Dysplasia Mutation Changes the Force Resilience and Interaction of Human Filamin A
2018
International audience; Filamin A (FLNa), expressed in endocardial endothelia during fetal valve morphogenesis, is key in cardiac development. Missense mutations in FLNa cause non-syndromic mitral valve dysplasia (FLNA-MVD). Here, we aimed to reveal the currently unknown underlying molecular mechanism behind FLNA-MVD caused by the FLNa P637Q mutation. The solved crystal structure of the FLNa3-5 P637Q revealed that this mutation causes only minor structural changes close to mutation site. These changes were observed to significantly affect FLNa's ability to transmit cellular force and to interact with its binding partner. The performed steered molecular dynamics simulations showed that signi…
Trans-(2,5)-disubstituoitujen pyrrolidiiniyhdisteiden enantioselektiivinen synteesi
2018
2,5-disubstituoitujen pyrrolidiinien enantioselektiivistä synteesiä on tutkittu paljon, sillä pyrrolidiinirakenne löytyy monista alkaloideista ja on täten tärkeä osa luonnonainesynteesiä. Lisäksi ne toimivat tärkeinä asymmetrisen synteesin työkaluina. Erityisen kiinnostavia tässä suhteessa ovat erilaiset trans-2,5-bisaryylipyrrolidiinit katalyyttisten ominaisuuksiensa vuoksi. Tässä tutkielmassa käydään läpi eräitä tapoja niiden syntetisoimiseksi. Tutkielmassa keskitytään erityisesti trans-2,5-difenyylipyrrolidiinin enantioselektiiviseen synteesiin.
Iodonium complexes of the tertiary amines quinuclidine and 1-ethylpiperidine
2021
Iodonium complexes incorporating tertiary amines have been synthesised to study and explore why such species comprised of alkyl amines are relatively rare. The complexes were characterised in solution (1H and 15N NMR spectroscopy) and the solid state (SCXRD), and analysed computationally. peerReviewed