نتایج جستجو برای: ugi four component

تعداد نتایج: 1200492  

Journal: :Processes 2023

Ugi reactions have been widely studied due to their mild reaction conditions, high structural variability, and wide applications. adducts proved be highly efficient for different kinds of post-transformations by carefully choosing the starting four components. Considering importance polycycles, diverse post-Ugi transformations employed construction structurally novel polycyclic N-heterocycles. ...

Journal: :Swiss medical weekly 2012
Nicolas C Buchs Pascal Bucher François Pugin Monika E Hagen Gilles Chassot Pascale Koutny-Fong Philippe Morel

QUESTIONS UNDER STUDY/PRINCIPLES In most centers, Upper Gastrointestinal series (UGI) following Roux-en-Y Gastric Bypass (RYGB) is performed to rule out GJ anastomotic leak. According to the introduction of robotic technology associated with a hypothetical decrease of anastomotic complications, we aim to assess the validity and cost effectiveness of early routine UGI following robot-assisted RY...

Journal: :Therapie 2007
Elisabeth Autret-Leca Lamiae Bensouda-Grimaldi Chantal Maurage Annie Pierre Jonville-Bera

OBJECTIVE To analyse serious upper gastrointestinal (UGI) complications associated with non-salicylate non-steroidal anti-inflammatory drugs (NSAIDs) in children. METHODS All serious UGI complications associated with non-salicylate NSAIDs approved in France to treat moderate pain or fever in children, spontaneously reported to the French Pharmacovigilance system or to the companies, between t...

2014
Sarah Bay Gamall Makhloufi Christoph Janiak Thomas J J Müller

Phenothiazinyl and carbazolyl-donor moieties can be covalently coupled to an anthraquinone acceptor unit through an Ugi four-component reaction in a rapid, highly convergent fashion and with moderate to good yields. These novel donor-acceptor dyads are electronically decoupled in the electronic ground state according to UV-vis spectroscopy and cyclic voltammetry. However, in the excited state t...

Journal: :Organic & biomolecular chemistry 2016
Haider N Sultani Haleh H Haeri Dariush Hinderberger Bernhard Westermann

For the first time, spin-labelled coumpounds have been obtained by isonitrile-based multi component reactions (IMCRs). The typical IMCR Ugi-protocols offer a simple experimental setup allowing structural variety by which labelled diketopiperazines (DKPs) and peptide-peptoid chimera have been synthesized. The reaction keeps the paramagnetic spin label intact and offers a simple and versatile rou...

Journal: :Land 2022

In the context of high-quality urban development and increasingly important role green infrastructure (UGI) in public life, landscape activity (LA) has gradually become a dominant indicator for improving UGI quality efficiency, as well optimizing its environmental friendliness meeting recreational needs public. Relevant studies have shown that ecological index (EI) vitality (PVI) can characteri...

Journal: :Indian journal of gastroenterology : official journal of the Indian Society of Gastroenterology 2011
Khalid Mumtaz Lubna Kamani Saeed Hamid Shahab Abid Hasnain A Shah Wasim Jafri

OBJECTIVES Upper gastrointestinal (UGI) bleeding carries high morbidity and mortality. The use of a bleeding care pathway (BCP) may improve outcomes, but the results are inconsistent in various studies. METHODS A BCP for patients with UGI bleed with admission in a bleeding care unit (BCU) has been in use at our hospital since 2005. Prior to this, a high dependency unit was used for management...

Journal: :Gut 2011
Eva M van Soest Vera E Valkhoff Giampiero Mazzaglia René Schade Mariam Molokhia Jay L Goldstein Sonia Hernández-Díaz Gianluca Trifirò Jeanne P Dieleman Ernst J Kuipers Miriam C J M Sturkenboom

BACKGROUND Gastro-protective agents (GPA) are co-prescribed with non-steroidal anti-inflammatory drugs (NSAID) to lower the risk of upper gastrointestinal (UGI) events. It is unknown to what extent the protective effect is influenced by therapy adherence. AIM To study the association between GPA adherence and UGI events among non-selective (ns) NSAID users. METHODS The General Practice Rese...

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