Results 1 to 10 of about 1,192 (125)

New Chlormequat-Based Ionic Liquids as Plant Resistance Inducers [PDF]

Molecules
Active compounds used in agriculture are mainly in the form of acids. This applies primarily to substances that are inducers of systemic acquired resistance, which is one of the most promising methods of supporting plants in the fight against pathogens ...
Rafal Kukawka, Maciej Spychalski, Patrycja Czerwoniec, Beata Hasiów-Jaroszewska, Sylwia Stępniewska-Jarosz, Emilia Frydrych-Tomczak, Marcin Smiglak   +6 more
doaj   +2 more sources

A Simple Method for Synthesis of Active Esters of Isonicotinic and Picolinic Acids

Molecules, 2001
A method for preparation of the p-nitrophenyl-, N-hydroxysuccinimidyl- and pentafluorophenyl esters of isonicotinic and picolinic acids from the corresponding acids is reported.
Jørn B. Christensen
doaj   +3 more sources

Visible Light-Induced Decarboxylative Radical Addition of Heteroaromatic Carboxylic Acids to Alkenes at Room Temperature in Two-Molecule Photoredox System. [PDF]

ChemistryOpen
The photoinduced decarboxylative radical addition of aryl carboxylic acids, including heteroaromatic carboxylic acids, to electron‐deficient alkenes is achieved in a two‐molecule photoredox system using a combination of biphenyl and 9,10‐dicyanoanthracene without heating or base.
Suzuki D, Hashimoto R, Furutani T, Yamawaki M, Suzuki H, Yoshimi Y.   +5 more
europepmc   +2 more sources

Comparative Metabolic Profiling of Different Colored Rice Grains Reveals the Distribution of Major Active Compounds and Key Secondary Metabolites in Green Rice [PDF]

Foods
Pigmented rice grains are important resources for health and nutritional perspectives. Thus, a thorough dissection of the variation of nutrients and bioactive metabolites in different colored rice is of global interest.
Mingchao Zhao, Linan Zhai, Qingjie Tang, Junfang Ren, Shizhen Zhou, Huijian Wang, Yong Yun, Qingwen Yang, Xiaowei Yan, Funeng Xing, Weihua Qiao   +10 more
doaj   +2 more sources

Mechanisms of Antibiotic Resistance and Novel Therapeutic Approaches for <i>Mycobacterium tuberculosis</i>: A Narrative Review With a Focus on Tuberculosis Mutations in Iran. [PDF]

Health Sci Rep
ABSTRACT Background and Aims Tuberculosis, caused by Mycobacterium tuberculosis (M. tuberculosis), is a highly contagious disease and one of the leading causes of mortality globally. The emergence and dissemination of multidrug‐resistant (MDR) strains of M. tuberculosis have become a major concern, especially in developing countries.
Bodaghi AB, Shariati A, Shamseddin J, Bodaghi AB, Rezaei M, Farahani A.   +5 more
europepmc   +2 more sources

Uncovering the structural impact of KatG Ser315 mutations in Mycobacterium tuberculosis via cryo-EM. [PDF]

Protein Sci
Abstract Mycobacterium tuberculosis (Mtb), the causative agent of tuberculosis (TB), is responsible for a global health burden affecting over a quarter of the world's population. The increasing prevalence of drug‐resistant TB poses a significant threat to current treatment strategies.
Allport T, Chaplin AK.
europepmc   +2 more sources

Non- Conventional Agents Enhance Sweet Pepper (<i>Capsicum annuum</i> L. var. <i>annuum</i>) Defense against <i>Aphis Gossypii</i>, <i>Thrips Tabaci</i>, and Their Predators <i>Chrysoperla Carnea</i> and <i>Orius Insidiosus</i>. [PDF]

Glob Chall
ABSTRACT A study conducted in Egypt evaluated the effectiveness of chemical and microbial agents in enhancing sweet pepper (Capsicum annuum var. annuum) defenses against major pests Aphis gossypii and Thrips tabaci and their natural predators, Chrysoperla carnea and Orius insidiosus. Five foliar treatments were tested under greenhouse conditions during
Zayed MS, Hegab MA, SaadAllah MS, Elnabawy EM, El-Beltagi HS, Abo-Ogiala A, El-Harariy A.   +6 more
europepmc   +2 more sources

Ruthenium Olefin Metathesis Catalysts Featuring N-Heterocyclic Carbene Ligands Tagged with Isonicotinic and 4-(Dimethylamino)benzoic Acid Rests: Evaluation of a Modular Synthetic Strategy

Molecules, 2021
A modular and flexible strategy towards the synthesis of N-heterocyclic carbene (NHC) ligands bearing Brønsted base tags has been proposed and then adopted in the preparation of two tagged NHC ligands bearing rests of isonicotinic and 4-(dimethylamino ...
Stefan Czarnocki, Louis Monsigny, Michał Sienkiewicz, Anna Kajetanowicz, Karol Grela   +4 more
doaj   +1 more source

The effects of solvents and structure on the electronic absorption spectra of the isomeric pyridine carboxylic acid N-oxides [PDF]

Chemical Industry and Chemical Engineering Quarterly, 2013
The ultraviolet absorption spectra of the carboxyl group of three isomeric pyridine carboxylic acids N-oxides (picolinic acid N-oxide, nicotinic acid N-oxide and isonicotinic acid N-oxide) were determined in fourteen solvents in the wavelength range ...
Drmanić Saša Ž., Nikolić Jasmina B., Marinković Aleksandar D., Šekularac Gavrilo M., Jovanović Bratislav Ž.   +4 more
doaj   +1 more source

The comparative study of linear solvatation energy relationship for the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents [PDF]

Journal of the Serbian Chemical Society, 2012
Protic and aprotic solvent effects on the reactivity of picolinic, nicotinic and isonicotinic acid, as well as of some substituted nicotinic acids with diazodiphenylmethane (DDM) were investigated.
Drmanić Saša Ž., Nikolić Jasmina B., Marinković Aleksandar D., Jovanović Bratislav Ž.   +3 more
doaj   +1 more source