نتایج جستجو برای: pyrrole

تعداد نتایج: 3583  

Faramarz Rostami-Charati Mehdi Shahraki Mohammad R. Hosseini- Tabatabaei Zinatossadat Hossaini

A one-pot synthesis of pyrrole derivatives via reaction between activated carbonyl compounds, primary amines and 1,3-dicarbonyls under solvent-free conditions is described‎.

Journal: :Journal of the Royal Society, Interface 2009
Jae Young Lee Joo-Woon Lee Christine E Schmidt

Electrically conductive and biologically active scaffolds are desirable for enhancing adhesion, proliferation and differentiation of a number of cell types such as neurons. Hence, the incorporation of neuroactive molecules into electroconductive polymers via a specific and stable method is essential for neuronal tissue engineering applications. Traditional conjugation approaches dramatically im...

2007
L. R. Shull

The metabolism in vitro of pyrrolizidine alkaloids by microsomes from eight animal species was studied. The rates of pyrrole production ranged from high to low in the following order: male hamster > male rabbit > male mouse > male rat > beef steer > beef bull female rat > wether lamb > male chicken male Japanese quail. With the exception of the rabbit and chicken, there appeared to be a direct ...

Journal: :Journal of the American Chemical Society 2006
Ryuhei Nishiyabu Manuel A Palacios Wim Dehaen Pavel Anzenbacher

The synthesis, structure, and anion binding properties of chromogenic octamethylcalix[4]pyrroles (OMCPs) and their N-confused octamethylcalix[4]pyrrole isomers (NC-OMCPs) containing an inverted pyrrole ring connected via alpha'- and beta-positions are described. X-ray diffraction analyses proved the structures of two synthesized isomeric pairs of OMCPs and NC-OMCPs. The addition of anions to so...

Journal: :Physical chemistry chemical physics : PCCP 2014
Rashid R Valiev Heike Fliegl Dage Sundholm

Magnetically induced current densities and current pathways have been calculated for six tautomers of substituted and nonsubstituted core-modified porphyrinoids with one of the pyrrole rings replaced by a thienopyrrole moiety. The calculations show that the aromatic properties of the porpyrinoid macrocycle are strongly influenced by the ethyl-formate substituent at the pyrrole ring of the thien...

2013
Pragi Arora Varun Arora H. S. Lamba Deepak Wadhwa

Heterocyclic compounds are of very much interest in our daily life. Heterocyclic compounds have one or more hetero atoms in their structure. They may be cyclic or non cyclic in nature. Heterocyclic compunds have a wide range of application. They are predominantly used as pharmaceuticals, as agrochemicals and as veterinary products. They also find applications as sanitizers, developers, antioxid...

Journal: :Acta poloniae pharmaceutica 2009
Dorota Krajewska Krystyna Midura-Nowaczek

The three-stage synthesis of a pyrrole analogue of chloramphenicol (5) was described. It is inactive.

2011
Lina Wang Xiangrong Liu Chun Yang Shunsheng Zhao Kanshe Li

The title compound, C(5)H(7)N(3)O, was obtained by the reaction of ethyl 1H-pyrrol-2-carboxyl-ate and hydrazide hydrate. In the crystal, mol-ecules are linked via inter-molecular N-H⋯N and N-H⋯O hydrogen bonds, forming a supra-molecular grid.

Journal: :Hoppe-Seyler´s Zeitschrift für physiologische Chemie 1914

Journal: :Agricultural and Biological Chemistry 1970

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