Effects of Indole Fatty Alcohols on the Differentiation of Neural Stem Cell Derived Neurospheres
摘要:
In a search for inducers of neuronal differentiation to treat neurodegenerative diseases such as Alzheimer's disease, a series of indole fatty alcohols (IFAs) were prepared. 13C (n = 18) was able to promote the differentiation of neural stem cell derived neurospheres into neurons at a concentration of 10 nM. Analysis of the expression of the Notch pathway genes in neurospheres treated during the differentiation phase with 13c (n = 18) revealed a significant decrease in the transcription of the Notch 4 receptor.
coupling reactions, the oligoamide fragment -Py[R]-γ-Py-Ind has been constructed. The last coupling reaction between the anomeric amino sugar and the oligoamide fragment was carried out by activating the acid derivative as a BtO- ester, which has been performed by using TFFH. The isolated esters (BtO-Py[R]-γ-Py-Ind) were coupled with selected amino sugars using DIEA in DMF. The synthesis of two different
The synthesis of tocopherol fatty alcohols (TFAs), potent microglial activation modulators, was achieved via C-alkylation of trimethylhydroquinone. Several analogs, in particular water-soluble prodrugs, have been synthesized using a Wittig reaction and their antioxidant activities have been evaluated.
Pair-Wise Interactions by Gas Chromatography; Part III:<sup>1,2</sup>Synthesis of Isosteric Stationary Phases for Gas Chromatography
作者:Roland Cloux、Guy Défayes、Klára Fóti、Jean-Claude Dutoit、Ervin Sz. Kováts
DOI:10.1055/s-1993-25968
日期:——
Retention in gas/liquid partition chromatography depends on the size and, to a lesser extent, on the form of the solvent used as stationary phase. How the measurement of interaction free enthalpies between a functional group and a solute free of size and form effects synthesis and properties of seven high molecular weight solvents is described. The monofunctional paraffin derivatives have the same form and nearly the same molar volume as that of their parent alkane 19,24-dioctadecyldotetracontane.
Oxamidation of Unsaturated <i>O</i>-Alkyl Hydroxamates: Synthesis of the Madangamine Diazatricylic (ABC Rings) Skeleton
作者:Abir Bhattacharjee、Mikhail V. Gerasimov、Sam DeJong、Duncan J. Wardrop
DOI:10.1021/acs.orglett.7b03283
日期:2017.12.15
A novel approach to the diazatricyclic madangamine ABCringsystem and the synthesis of an advanced, differentially protected intermediate for the synthesis of madangamine D is reported. Central to the success of this approach is the iodine(III)-mediated intramolecular oxamidation of an unsaturated O-methyl hydroxamate, a π–N+-type cyclization which proceeds in high yield and with complete regioselectivity
Ni-Catalyzed Carboxylation of Unactivated Primary Alkyl Bromides and Sulfonates with CO<sub>2</sub>
作者:Yu Liu、Josep Cornella、Ruben Martin
DOI:10.1021/ja5064586
日期:2014.8.13
A Ni-catalyzed carboxylation of unactivated primary alkyl bromides and sulfonates with CO2 at atmospheric pressure is described. The method is characterized by its mild conditions and remarkably wide scope without the need for air- or moisture-sensitive reagents, which make it a user-friendly and operationally simple protocol en route to carboxylic acids.