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Dive into the research topics where Lidija Kosychova is active.

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Featured researches published by Lidija Kosychova.


Monatshefte Fur Chemie | 1999

A Novel Application of Heterocyclic Compounds for Biosensors Based on NAD, FAD, and PQQ Dependent Oxidoreductases

Valdas Laurinavicius; Bogumila Kurtinaitienė; Virginijus Liauksminas; Benedikta Puodžiūnaitė; Regina Jančienė; Lidija Kosychova; Rolandas Meškys

Summary. Various five-, six-, and seven-membered heterocyclic compounds containing two nitrogen atoms as well as quinoid substances were synthesized and investigated. Electrochemical oxidation-polymerization of these heterocycles on carbon and platinum electrodes was performed in aqueous medium. Electrochemically pre-treated carbon electrodes modified with these heterocyclic compounds and were used for the electro-catalytic oxidation of NADH and for the design of mediated glucose biosensors.Zusammenfassung. Verschiedene fünf-, sechs- und siebengliedrige heterocyclische Verbindungen mit zwei Stickstoffatomen sowie Chinone wurden hergestellt und untersucht. Elektrochemische Aktivität und elektrochemische Polymerisation der Heterocyclen an Platin- und Kohlenstoffelektroden wurden in wäßriger Lösung studiert. Durch die genannten Heterozyclen modifizierte Kohlenstoffelektroden können für die elektrochemische Oxidation von NADH und den Aufbau von Glucosesensoren unter Verwendung von Glucoseoxidase und PQQ-abhängiger Glucosedehydrogenase verwendet werden.


Monatshefte Fur Chemie | 1997

2,3-DIHYDRO-1H-1,5-BENZODIAZEPINES : A CONVERSION OF THIOLACTAMS TO AMIDINES

Benedikta Puodžiūnaitė; Lidija Kosychova; Regina Jančienė; Z. Stumbrevičiūtė

SummaryThe synthesis of a new series of diversely N-4 substituted amidines of 2,3-dihydro-1H-1,5-benzodiazepine has been accomplished starting from tetrahydro-1,5-benzodiazepin-2-one derivatives. These compounds were transformed into the desired thiolactams2a–i which reacted in the presence of mercuric chloride with ammonia, as well as primary or secondary amines to give amidines3a–i. Hydrazidines3j–l were prepared by treatment of thiolactams with an excess of hydrazine.ZusammenfassungEinige neue N-substituierte Amidine von 2,3-Dihydro-1H-1,5-benzodiazepinen wurden ausgehend von Tetrahydro-1H-1,5-benzodiazepin-2-onen synthetisiert. Letztere wurden in die Thiolactame2a–i umgewandelt und anschließend durch Behandeln mit Ammoniak, primären oder sekundären Aminen in Gegenwart von Quecksilber(II)-chlorid zu den entsprechenden Amidinen3a–i umgesetzt. Die Hydrazinoamidine3j–l wurden aus den Thiolactamen mit Hydrazineüberschuß erhalten.


Arkivoc | 2000

On the synthetic way to novel peri-annelated imidazo[1,5]benzo-diazepinones as the potent non-nucleoside reverse transcriptase inhibitors

Benedikta D. Puodziunaite; Regina Janciene; Lidija Kosychova; Zita Stumbreviciute


Journal of Heterocyclic Chemistry | 2009

Synthesis of Novel Annelated Systems Based on the Interaction and Reactivity Estimation of Amino-1,5-benzodiazepin-2-ones with Dimethyl-2-oxoglutaconate

Regina Janciene; Zita Stumbreviciute; Ausra Vektariene; Lidija Kosychova; Algirdas Klimavicius; Algirdas Palaima; Benedikta D. Puodziunaite


Heteroatom Chemistry | 2008

Researches on thiazolobenzodiazepines: Behavior of tetrahydro-1,5-benzodiazepinethiones with aromatic α-haloketones

Regina Janciene; Zita Stumbreviciute; Ausra Vektariene; Lidija Kosychova; Romualdas Sirutkaitis; Algirdas Palaima; Zita Staniulyte; Benedikta D. Puodziunaite


Heteroatom Chemistry | 2004

A straightforward synthesis of novel 4H-thiazolo[3,2-d][1,5]benzodiazepine derivatives

Regina Janciene; Ausra Vektariene; Zita Stumbreviciute; Lidija Kosychova; Algirdas Klimavicius; Benedikta D. Puodziunaite


Drug Research | 2011

Synthesis and Antitumour Activity of a Series of Cyclic Amidines of 2,3-Dihydro-1H-1,5-benzodiazepines

Regina Jančienė; Lidija Kosychova; Virginija Bukelskienė; Vigintas Domkus; Zita Stumbrevičiūtė; Vida Ragaleviciene; Benedikta D. Puodžiūnaitè


Monatshefte Fur Chemie | 2003

Functionalization of 2,3,4,5-Tetrahydro-1,5-benzodiazepin-2(1H)-ones by Electrophilic Aromatic Substitution

Regina Janciene; Ausra Vektariene; Zita Stumbreviciute; Lidija Kosychova; Kazimieras Konstantinavicius; Benedikta D. Puodziunaite


Molecules | 2015

New 1-(3-Nitrophenyl)-5,6-dihydro-4H-[1,2,4]triazolo[4,3-a][1,5]benzodiazepines: Synthesis and Computational Study

Lidija Kosychova; Antanas Karalius; Zita Staniulytė; Romualdas Sirutkaitis; Algirdas Palaima; Audrius Laurynėnas; Žilvinas Anusevičius


Journal of Heterocyclic Chemistry | 2015

Dihydroquinazolino[3,2‐a][1,5]benzodiazepines: Synthesis and Computational Study of Reductive N‐Heterocyclization of N‐(2‐Nitrobenzoyl)‐1,5‐benzodiazepin‐2‐ones

Regina Janciene; Gema Mikulskiene; Tomas Javorskis; Ausra Vektariene; Gytis Vektaris; Lidija Kosychova

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