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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">pmedpharm</journal-id><journal-title-group><journal-title xml:lang="ru">Фармация и фармакология</journal-title><trans-title-group xml:lang="en"><trans-title>Pharmacy &amp; Pharmacology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2307-9266</issn><issn pub-type="epub">2413-2241</issn><publisher><publisher-name>Pyatigorsk Medical and Pharmaceutical Institute - branch of Volgograd State Medical Univer</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.19163/2307-9266-2026-14-2-175-188</article-id><article-id custom-type="elpub" pub-id-type="custom">pmedpharm-1865</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ОРИГИНАЛЬНАЯ СТАТЬЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>RESEARCH ARTICLE</subject></subj-group></article-categories><title-group><article-title>Прогноз, антиоксидантная активность in silico и целенаправленный синтез азометиновых производных пространственно-затруднённого фенола</article-title><trans-title-group xml:lang="en"><trans-title>Prediction, in silico antioxidant activity, and targeted synthesis of sterically hindered phenol azomethine derivatives</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-9358-6772</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Цакулова</surname><given-names>Т. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Tsakulova</surname><given-names>T. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>старший преподаватель кафедры фармации ФГБОУ ВО СОГМА Минздрава России; соискатель кафедры фармацевтической химии ПМФИ – филиала ФГБОУ ВО ВолгГМУ Минздрава России.</p><p>1. Россия, 362019, г. Владикавказ, ул. Пушкинская, д. 40.</p><p>2. Россия, 357532, г. Пятигорск, пр-т Калинина, д. 11.</p></bio><bio xml:lang="en"><p>senior lecturer of the Department of Pharmacy, North Ossetian State Medical Academy; applicant of the Department of Pharmaceutical Chemistry, Pyatigorsk Medical and Pharmaceutical Institute – branch of Volgograd State Medical University. </p><p>1. 40 Pushkinskaya Str., Vladikavkaz, Russia, 362019.</p><p>2. 11 Kalinin Аve., Pyatigorsk, Russia, 357532. </p></bio><email xlink:type="simple">tsakulova7@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-1333-3472</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кодониди</surname><given-names>И. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Kodonidi</surname><given-names>I. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор фармацевтических наук, профессор, заведующий кафедрой фармацевтической химии, ПМФИ – филиала ФГБОУ ВО ВолгГМУ Минздрава России. </p><p>Россия, 357532, г. Пятигорск, пр-т Калинина, д. 11.</p></bio><bio xml:lang="en"><p>Doctor of Sciences (Pharmacy), Professor, Head of the Department of Pharmaceutical Chemistry, Pyatigorsk Medical and Pharmaceutical Institute – branch of Volgograd State Medical University. </p><p>11 Kalinin Аve., Pyatigorsk, Russia, 357532.</p></bio><email xlink:type="simple">kodonidiip@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-8207-2953</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Чиряпкин</surname><given-names>А. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Chiriapkin</surname><given-names>A. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат фармацевтических наук, старший преподаватель кафедры фармацевтической химии ПМФИ – филиала ФГБОУ ВО ВолгГМУ Минздрава России. </p><p>Россия, 357532, г. Пятигорск, пр-т Калинина, д. 11.</p></bio><bio xml:lang="en"><p>Candidate of Sciences (Pharmacy), Senior Lecturer of the Department of Pharmaceutical Chemistry, Pyatigorsk Medical and Pharmaceutical Institute – branch of Volgograd State Medical University. </p><p>11 Kalinin Аve., Pyatigorsk, Russia, 357532.</p></bio><email xlink:type="simple">alexey.chiriapkin@yandex.ru</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-6346-9872</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Бидарова</surname><given-names>Ф. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Bidarova</surname><given-names>F. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат фармацевтических наук, доцент, заведующий кафедрой фармации ФГБОУ ВО СОГМА Минздрава России.</p><p>Россия, 362019, г. Владикавказ, ул. Пушкинская, д. 40.</p></bio><bio xml:lang="en"><p>Candidate of Sciences (Pharmacy), Assistant Professor, Head of the Department of Pharmacy, North Ossetian State Medical Academy. </p><p>40 Pushkinskaya Str., Vladikavkaz, Russia, 362019.</p></bio><email xlink:type="simple">pharm-sogma@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0960-0980</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Кисиева</surname><given-names>М. Т.</given-names></name><name name-style="western" xml:lang="en"><surname>Kisieva</surname><given-names>M. T.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат фармацевтических наук, доцент, доцент кафедры фармации, ФГБОУ ВО СОГМА Минздрава России. </p><p>Россия, 362019, г. Владикавказ, ул. Пушкинская, д. 40.</p></bio><bio xml:lang="en"><p>Candidate of Sciences (Pharmacy), Assistant Professor, Head of the Department of Pharmacy, North Ossetian State Medical Academy. </p><p>40 Pushkinskaya Str., Vladikavkaz, Russia, 362019.</p></bio><email xlink:type="simple">mananakisieva@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0004-2266-6353</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Усманова</surname><given-names>Л. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Usmanova</surname><given-names>L. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>студентка 4 курса фармацевтического факультета, ФГБОУ ВО СОГМА Минздрава России. </p><p>Россия, 362019, г. Владикавказ, ул. Пушкинская, д. 40.</p></bio><bio xml:lang="en"><p>4th-year student of the Faculty of Pharmacy, North Ossetian State Medical Academy. </p><p>40 Pushkinskaya Str., Vladikavkaz, Russia, 362019.</p></bio><email xlink:type="simple">0221262@mail.ru</email><xref ref-type="aff" rid="aff-3"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>1. Федеральное государственное бюджетное образовательное учреждение высшего образования «Северо-Осетинская государственная медицинская академия» Министерства здравоохранения Российской Федерации.&#13;
2. Пятигорский медико-фармацевтический институт –  филиал федерального государственного бюджетного образовательного учреждения высшего образования «Волгоградский государственный медицинский университет» Министерства здравоохранения Российской Федерации.</institution><country>Россия</country></aff><aff xml:lang="en"><institution>1. North Ossetian State Medical Academy.&#13;
2. Pyatigorsk Medical and Pharmaceutical Institute – branch of Volgograd State Medical University.</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Пятигорский медико-фармацевтический институт –  филиал федерального государственного бюджетного образовательного учреждения высшего образования «Волгоградский государственный медицинский университет» Министерства здравоохранения Российской Федерации.</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Pyatigorsk Medical and Pharmaceutical Institute – branch of Volgograd State Medical University.</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-3"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Северо-Осетинская государственная медицинская академия» Министерства здравоохранения Российской Федерации.</institution><country>Россия</country></aff><aff xml:lang="en"><institution>North Ossetian State Medical Academy.</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2026</year></pub-date><pub-date pub-type="epub"><day>29</day><month>04</month><year>2026</year></pub-date><volume>14</volume><issue>2</issue><fpage>175</fpage><lpage>188</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Цакулова Т.В., Кодониди И.П., Чиряпкин А.С., Бидарова Ф.Н., Кисиева М.Т., Усманова Л.А., 2026</copyright-statement><copyright-year>2026</copyright-year><copyright-holder xml:lang="ru">Цакулова Т.В., Кодониди И.П., Чиряпкин А.С., Бидарова Ф.Н., Кисиева М.Т., Усманова Л.А.</copyright-holder><copyright-holder xml:lang="en">Tsakulova T.V., Kodonidi I.P., Chiriapkin A.S., Bidarova F.N., Kisieva M.T., Usmanova L.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.pharmpharm.ru/jour/article/view/1865">https://www.pharmpharm.ru/jour/article/view/1865</self-uri><abstract><p>Проведено молекулярное конструирование и синтез нового ряда биологически активных азометинов, содержащих пространственно-затруднённый фенольный фрагмент. В рамках исследования 8 соединений, для которых оценена антиоксидантная активность в условиях in vitro. Для установления механизма действия методом молекулярного докинга выполнено моделирование взаимодействия синтезированных лигандов с активным центром глутатионпероксидазы-4 (GPx-4). Проведённый анализ позволил выявить ключевые структурные особенности, определяющие антиоксидантную эффективность, и установить корреляционную связь между строением молекул и их биологической активностью.</p><sec><title>Цель</title><p>Цель. Синтез, компьютерный скрининг и исследование антиоксидантных свойств новых азометинов на основе пространственно-затруднённого фенола, а также установление корреляций «структура–активность».</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Методом конденсации соответствующих кетонов с ароматическими аминами в присутствии каталитических количеств п-толуолсульфокислоты был осуществлен синтез нового ряда 2,6-ди-трет-бутил-4-[C-алкил-(арил)-(N-фенил)-азометино]фенолов. Структура и чистота полученных соединений подтверждены комплексом физико-химических методов, включая ИК-спектроскопию, ¹H-ЯМР-спектроскопию и элементный анализ. Для первичной оценки биологической потенции синтезированных соединений проведено компьютерное прогнозирование (in silico) их антиоксидантных, антирадикальных и кардиотонических свойств с использованием онлайн-платформы PASS Online. Молекулярное моделирование потенциальной ингибирующей активности в отношении глутатионпероксидазы-4 (GPx-4) человека выполнялось в программе Autodock 4.0. При этом учитывалась конформационная подвижность лигандов, для которых были предварительно определены и заданы оптимальные торсионные углы. Экспериментальное изучение антиоксидантной активности (АОА) проводилось в двух модельных системах: индуцирование перекисного окисления липидов (ПОЛ) в комплексе жирных кислот кукурузного масла под действием УФ-облучения; система Фентона (H₂O₂/Fe²⁺). Для сопоставления эффективности в качестве референтных стандартов были использованы убихинон и бутилированный гидрокситолуол (БГТ, действующее вещество препарата дибулин), представляющий класс экранированных фенолов.</p></sec><sec><title>Результаты</title><p>Результаты. Спектр биологической активности исследованных соединений предсказан in silico с помощью сервиса PASS Online. Согласно прогнозу, все вещества обладают кардиотоническим, мембраностимулирующим и антиоксидантным потенциалом. Наличие АОА и способности захватывать свободные радикалы позволяет отнести данные молекулы к классу антирадикальных агентов. Экспериментальная проверка АОА была проведена в двух модельных системах: на основе фотоокисления (УФ-облучение) комплекса жирных кислот кукурузного масла (система № 1) и на системе Фентона (H₂O₂/Fe²⁺, система № 2). Во всех случаях исследуемые соединения продемонстрировали высокую эффективность, ингибируя ПОЛ на 42–48%. Данный результат существенно превышает активность стандартных антиоксидантов — убихинона (11%) и БГТ (39%) — в аналогичных условиях.</p></sec><sec><title>Заключение</title><p>Заключение. Результаты молекулярного докинга свидетельствуют о высоком сродстве новых лигандов к белку ГП-4, причем расчётная энергия связывания для наиболее перспективных структур сопоставима с таковой для известных эталонов — убихинона, дибулина (гидроксибутилированного толуола) и мексидола. Экспериментальные данные in vitro подтвердили выраженную антиоксидантную активность синтезированных соединений. Выделены «лидерные» структуры, превосходящие по эффективности классические антиоксиданты — убихинон и дибулин.</p></sec></abstract><trans-abstract xml:lang="en"><p>Molecular design and synthesis of a new series of biologically active azomethines containing a sterically hindered phenolic fragment were carried out. Within the scope of the study, 8 compounds were synthesized, and their antioxidant activity was evaluated under in vitro conditions. To establish the mechanism of action, molecular docking was used to model the interaction of the synthesized ligands with the active site of glutathione peroxidase-4 (GPx-4). The conducted analysis revealed key structural features determining antioxidant efficacy and established a correlation between molecular structure and biological activity.</p><sec><title>The aim</title><p>The aim. Synthesis, computer screening, and investigation of the antioxidant properties of new azomethines based on sterically hindered phenol, as well as establishing structure–activity relationships.</p></sec><sec><title>Materials and methods</title><p>Materials and methods. A new series of 2,6-di-tert-butyl-4-[C-alkyl-(aryl)-(N-phenyl)-azomethine]phenols was synthesized by the condensation of corresponding ketones with aromatic amines in the presence of catalytic amounts of p-toluenesulfonic acid. The structure and purity of the obtained compounds were confirmed by a complex of physicochemical methods, including IR spectroscopy, H NMR spectroscopy, and elemental analysis. For the initial assessment of the biological potency of the synthesized compounds, computer prediction (in silico) of their antioxidant, antiradical, and cardiotonic properties was performed using the online platform PASS Online. Molecular modeling of potential inhibitory activity against human glutathione peroxidase-4 (GPx-4) was carried out using the Autodock 4.0 program. The conformational mobility of the ligands was taken into account, for which optimal torsion angles were previously determined and set. Experimental study of antioxidant activity (AOA) was conducted in two model systems: induction of lipid peroxidation (LPO) in a complex of corn oil fatty acids under UV irradiation; and the Fenton system (H₂O₂/Fe²⁺). To compare efficacy, ubiquinone and bottled hydroxytoluene (BHT, the active substance of the drug dibulin), representing the class of sterically hindered phenols, were used as reference standards.</p></sec><sec><title>Results</title><p>Results. The spectrum of biological activity of the studied compounds was predicted in silico using the PASS Online service. As it was expected, all substances have cardiotonic, membrane-stimulating, and antioxidant potential. The presence of AOA and the ability to scavenge free radicals allows these molecules to be classified as antiradical agents. Experimental verification of AOA was carried out in two model systems: based on photooxidation (UV irradiation) of a complex of fatty acids from corn oil (system No. 1) and on the Fenton system (H₂O₂/Fe²⁺, system No. 2). In all the cases, the studied compounds demonstrated high efficacy, inhibiting lipid peroxidation LPO by 42–48%. This result significantly exceeds the activity of standard antioxidants — ubiquinone (11%) and BHT (39%) — in the same conditions.</p></sec><sec><title>Conclusion</title><p>Conclusion. The results of molecular docking indicate a high affinity of the new ligands to the GP-4 protein, with the calculated binding energy for the most promising structures being comparable to that of known standards—ubiquinone, dibulin (hydroxybutylated toluene), and mexidol. In vitro experimental data confirmed the pronounced antioxidant activity of the synthesized compounds. “Lead” structures were identified that surpass classical antioxidants—ubiquinone and dibulin — in efficacy.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>азометины</kwd><kwd>азометинофенолы</kwd><kwd>пространственно-затруднённые фенолы</kwd><kwd>антиоксидантная активность</kwd><kwd>перекисное окисление липидов</kwd><kwd>PASS Online</kwd></kwd-group><kwd-group xml:lang="en"><kwd>azomethines</kwd><kwd>azomethine phenols</kwd><kwd>sterically hindered phenols</kwd><kwd>antioxidant activity</kwd><kwd>lipid peroxidation</kwd><kwd>PASS Online</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Данное исследование не имело финансовой поддержки от сторонних организаций.</funding-statement><funding-statement xml:lang="en">This study did not have financial support from third-party organizations.</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Aboonabia A. 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