Search results for "morpholine"
showing 10 items of 93 documents
Effect of LIF-withdrawal on acetylcholine synthesis in the embryonic stem cell line CGR8 is not mediated by STAT3, PI3Ks or cAMP/PKA pathways.
2015
Acetylcholine (ACh) acts as a local cellular signaling molecule and is widely expressed in nature, including mammalian cells and embryonic stem cells. The murine embryonic stem cell line CGR8 synthesizes and releases substantial amounts of ACh. Particularly during early differentiation - a period associated with multiple alterations in geno-/phenotype functions - synthesis and release of ACh are increased by 10-fold. In murine stem cells second messengers of the STAT-3, PI3K and cAMP/PKA pathways are involved in maintaining self-renewal and pluripotency. The present experiments were designed to test whether blockers of these signaling pathways enhance ACh cell content in the presence of LIF…
New complexes of Ni(II) and Co(III) with a Schiff-base ligand derived from o -vanillin. Crystal structure, magnetic and catalytic properties of a dis…
2018
Abstract A binuclear complex, [Ni2L2(NO3)(H2O)(CH3CN)]ClO4·CH3CN (1), has been obtained using a Schiff-base ligand (HL) derived from o-vanillin and 4-(2-aminoethyl)morpholine. The crystal structure of 1 has been solved. Both Ni(II) ions are hexacoordinated, but they display different coordination spheres. The exchange interaction between the two nickel ions is antiferromagnetic (J = −7.9 ± 0.2 cm−1; H = −JS1S2), in line with the DFT calculations. Compound 1 has been tested as a catalyst in the epoxidation of various olefins. The reaction of the same ligand with a mixture of cobalt(II) perchlorate and nitrate affords a mononuclear Co(III) complex, [CoL2(H2O)]ClO4·CH3OH (2).
Synthese von geschützten Serin-Glycopeptiden durch N-terminale Peptidketten-Verlängerung
1983
O-(2-Acetamido-3,4,6-tri-O-acetyl-2- desoxy-β-D-glucopyranosyl)serin-methylester (4) wird mit den 2-Phosphonioethoxycarbonyl-(Peoc-)Aminosauren 5 zu den voll geschutzten O-Glycodipeptiden 6 umgesetzt. Aus den Verbindungen 6 wird die Peoc-Gruppe mit Morpholin/Methylendichlorid vollstandig und selektiv zu 7 abgespalten, wobei weder β-Eliminierung des Kohlenhydratteils noch Esteraminolyse zu beobachten ist. Die N-deblockierten Glycodipeptide 7 reagieren mit den Peoc-Aminosauren 5 zu den geschutzten O-Glycotripeptiden 8. Mit Z-Asparagin (9) kann der Leucyl-(O-glycosyl)serinester 7a zum geschutzten Glycotripeptid 10 verknupft werden, das die fur N-Glycoproteine typische Sequenz -Asn-X-Ser- entha…
CCDC 2245212: Experimental Crystal Structure Determination
2023
Related Article: Milla Mattila, Kari Rissanen, Jas S. Ward|2023|Chem.Commun.|59|4648|doi:10.1039/D3CC00259D
CCDC 1407242: Experimental Crystal Structure Determination
2016
Related Article: Rakesh Puttreddy, Ngong Kodiah Beyeh, Kari Rissanen|2016|CrystEngComm|18|793|doi:10.1039/C5CE02354H
CCDC 2068112: Experimental Crystal Structure Determination
2021
Related Article: Shilin Yu, Jas S. Ward, Khai-Nghi Truong, Kari Rissanen|2021|Angew.Chem.,Int.Ed.|60|20739|doi:10.1002/anie.202108126
CCDC 2032478: Experimental Crystal Structure Determination
2021
Related Article: Stephan P. Blum, Tarik Karakaya, Dieter Schollmeyer, Artis Klapars, Siegfried R. Waldvogel|2021|Angew.Chem.,Int.Ed.|60|5056|doi:10.1002/anie.202016164
CCDC 2068111: Experimental Crystal Structure Determination
2021
Related Article: Shilin Yu, Jas S. Ward, Khai-Nghi Truong, Kari Rissanen|2021|Angew.Chem.,Int.Ed.|60|20739|doi:10.1002/anie.202108126
CCDC 2047296: Experimental Crystal Structure Determination
2021
Related Article: Anne Lüpke, Luca M. Carrella, Eva Rentschler|2021|Chem.-Eur.J.|27|4283|doi:10.1002/chem.202004947
CCDC 1009523: Experimental Crystal Structure Determination
2015
Related Article: Pavel V. Gushchin, Maxim L. Kuznetsov, Matti Haukka, and Vadim Yu. Kukushkin|2014|J.Phys.Chem.A|118|9529|doi:10.1021/jp506256a