نتایج جستجو برای: α amino acids

تعداد نتایج: 493978  

2015
Adam Noble Stefan J. McCarver David W. C. MacMillan

Decarboxylative cross-coupling of alkyl carboxylic acids with vinyl halides has been accomplished through the synergistic merger of photoredox and nickel catalysis. This new methodology has been successfully applied to a variety of α-oxy and α-amino acids, as well as simple hydrocarbon-substituted acids. Diverse vinyl iodides and bromides give rise to vinylation products in high efficiency unde...

Journal: :Acta Crystallographica Section A Foundations of Crystallography 2006

2016
Etienne Larger Nicolai J Wewer Albrechtsen Lars H Hansen Richard W Gelling Jacqueline Capeau Carolyn F Deacon Ole D Madsen Fumiatsu Yakushiji Pierre De Meyts Jens J Holst Erica Nishimura

Glucagon stimulates hepatic glucose production by activating specific glucagon receptors in the liver, which in turn increase hepatic glycogenolysis as well as gluconeogenesis and ureagenesis from amino acids. Conversely, glucagon secretion is regulated by concentrations of glucose and amino acids. Disruption of glucagon signaling in rodents results in grossly elevated circulating glucagon leve...

2014
John M. Curto Joshua S. Dickstein Simon Berritt Marisa C. Kozlowski

The first asymmetric synthesis of α-allyl-α-aryl α-amino acids by means of a three-component coupling of α-iminoesters, Grignard reagents, and cinnamyl acetate is reported. Notably, the enolate from the tandem process provides a much higher level of reactivity and selectivity than the same enolate generated via direct deprotonation, presumably due to differences in the solvation/aggregation sta...

Tuberose (Polianthes tuberosa L.) is one of the most important cut flowers in Iran. This research was conducted to investigate the effects of spraying a mixture of amino acids on the physiological and morphological characteristics of tuberose. The experiment was carried out in two successive years (2009 and 2010) using two tuberose cultivars ‘Dezfuli’ and ‘Mahallati’. The experiment was arrange...

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