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23.073  Articles
1 of 2.308 pages  |  10  records  |  more records»
Aim. To study the effect of the structural parameters of styrylacetic acid amides on the course of the reaction of the electrophilic intramolecular cyclization under the action of polyphosphoric acid and search the rational approaches to obtain N-unsubsti... see more

 Received: 12.12.2019Revised: 10.01.2020Accepted: 27.02.2020

The literature references concerning the biological activity of pyrido[3,2-d]pyrimidines and condensed polycyclic systems based on them have been systematized and analyzed. The main methods of the synthesis of polyheterocycles containing the pyrido[3,2-d]... see more

A clean and straightforward methodology developed for the synthesis of substituted indazoles using silica supported polyphosphoric acid (PPA-SiO2) catalyzed condensation reaction between substituted 2-hydroxybenzaldehydes or acetophenones and hydrazine hy... see more

1-Phenacyl-3-aryl-4,6-dimethoxyindoles 2b and 2c were obtained in good yields respectively through cyclization of N,N-diphenacylaniline 1b and 1c in trifluoroacetic acid. However, instead of giving pyrroloindole 3c, treatment of phenacylindole 2c with pol... see more

An effective and simple method for liquid-phase combinatorial synthesis of structural analogues of compounds with the mechanism of action being similar to aminoglycoside antibiotics – 2-(1-acyl-3-piperidinyl)-1H-benzimidazolesbased on acylation of the sta... see more

Aim. To extend the synthetic limits of the reaction of the electrophilic intramolecular cyclization (EIC) on the examples of 5,5-disubstituted and 5-yliden substituted 3-allyl-2-thiohydantoins and the directed structural modification of 2-halogenomethyl-2... see more

In this study we have synthesized some Benzimidazole derivatives (2-{6-Chloro-5-nitro-1-[2-(1H-tetrazol-5-yl) biphenyl-4-ylmethyl] 1H-benzoimidazol-2-yl}-phenyl)-(Substituted-benzylidene)-amine and screened for their antihypertensive activity. 4-chloro-o-... see more

Conclusion: Low concentration of caprylic acid and monocaprylin in-vitro were able to reduce Avian influenza virus.  Monocaprylin is more effective in reducing the viral particles compared to the other compounds. (Health Science Indones 2011; 2: 42 -... see more

1 of 2.308 pages  |  10  records  |  more records»