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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">10.19163/2307-9266-2023-11-3-240-254</article-id><article-id custom-type="elpub" pub-id-type="custom">pmedpharm-1356</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>Изучение биотрансформации нового селективного ингибитора карбоангидразы II 4-(2-метил-1,3-оксазол-5-ил)-бензолсульфонамида</article-title><trans-title-group xml:lang="en"><trans-title>Study of biotransformation of new selective carbonic anhydrase II inhibitor 4-(2-methyl-1,3-oxazole-5-yl)-benzenesulfonamide</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-0032-0341</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Хохлов</surname><given-names>А. Л.</given-names></name><name name-style="western" xml:lang="en"><surname>Khokhlov</surname><given-names>A. L.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор медицинских наук, профессор, академик РАН, заведующий кафедрой фармакологии и клинической фармакологии, ректор ФГБОУ ВО ЯГМУ Минздрава России. </p><p>150000, Россия, г. Ярославль, ул. Революционная, д. 5</p><p> </p></bio><bio xml:lang="en"><p>Doctor of Sciences (Medicine), Professor, Academician of The Russian Academy of Sciences, Head of the Department of Pharmacology and Clinical Pharmacology, rector of Yaroslavl State Medical University.</p><p>5, Revolutsionnaya Str., Yaroslavl, Russia, 150000</p></bio><email xlink:type="simple">al460935@yandex.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/0000-0002-0066-7388</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Яичков</surname><given-names>И. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Yaichkov</surname><given-names>I. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат фармацевтических наук, научный сотрудник отдела аналитической разработки и контроля качества Центра трансфера фармацевтических технологий им. М.В. Дорогова, ФГБОУ ВО ЯГПУ им. К.Д. Ушинского; научный сотрудник Института фармации ФГБОУ ВО ЯГМУ Минздрава России. </p><p>150030, Россия, г. Ярославль, ул. Технопарковая, д. 11/2.</p><p>150000, Россия, г. Ярославль, ул. Революционная, д. 5.</p></bio><bio xml:lang="en"><p>Candidate of Sciences (Pharmacy), Researcher of the Department of Analytical Development and Quality Control of M.V. Dorogov Pharmaceutical Technology Transfer Center of Yaroslavl State Pedagogical University n.a. K.D. Ushinsky; Researcher of the Institute of Pharmacy of Yaroslavl State Medical University. </p><p>Bldg 2, 11, Technoparkovaya Str., Yaroslavl, Russia, 150030</p><p>5, Revolutsionnaya Str., Yaroslavl, Russia, 150000</p></bio><email xlink:type="simple">i.yaichkov@yspu.org</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4389-461X</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шетнев</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Shetnev</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат химических наук, руководитель отдела фармацевтической разработки Центра трансфера фармацевтических технологий им. М.В. Дорогова, ФГБОУ ВО ЯГПУ им. К.Д. Ушинского. </p><p>150030, Россия, г. Ярославль, ул. Технопарковая, д. 11/2</p></bio><bio xml:lang="en"><p>Candidate of Sciences (Chemistry), Head of the Department of Pharmaceutical Development of M.V. Dorogov Pharmaceutical Technology Transfer Center of Yaroslavl State Pedagogical University n.a. K.D. Ushinsky. </p></bio><email xlink:type="simple">a.shetnev@list.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/0000-0002-1421-9236</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ивановский</surname><given-names>С. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ivanovskiy</surname><given-names>S. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>кандидат химических наук, руководитель отдела аналитической разработки и контроля качества Центра трансфера фармацевтических технологий им. М.В. Дорогова, ФГБОУ ВО ЯГПУ им. К.Д. Ушинского. </p><p>150030, Россия, г. Ярославль, ул. Технопарковая, д. 11/2.</p></bio><bio xml:lang="en"><p>Candidate of Sciences (Chemistry), Head of the Department of Analytical Development and Quality Control of M.V. Dorogov Pharmaceutical Technology Transfer Center of Yaroslavl State Pedagogical University n.a. K.D. Ushinsky. </p><p>5, Revolutsionnaya Str., Yaroslavl, Russia, 150000</p></bio><email xlink:type="simple">main_engine@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/0000-0003-0913-2571</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Корсаков</surname><given-names>М. К.</given-names></name><name name-style="western" xml:lang="en"><surname>Korsakov</surname><given-names>M. K.</given-names></name></name-alternatives><bio xml:lang="ru"><p>доктор химических наук, профессор кафедры химии, теории и методики преподавания химии, директор Центра трансфера фармацевтических технологий им. М.В. Дорогова, ФГБОУ ВО ЯГПУ им. К.Д. Ушинского. </p><p>150030, Россия, г. Ярославль, ул. Технопарковая, д. 11/2.</p></bio><bio xml:lang="en"><p>Doctor of Sciences (Chemistry), Professor of the Department of Chemistry, Theory and Methods of Teaching Chemistry, Director of M.V. Dorogov Pharmaceutical Technology Transfer Center of Yaroslavl State Pedagogical University n.a. K.D. Ushinsky.</p><p>5, Revolutsionnaya Str., Yaroslavl, Russia, 150000</p></bio><email xlink:type="simple">m.korsakov@yspu.org</email><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-9701-9207</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гасилина</surname><given-names>О. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Gasilina</surname><given-names>O. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>инженер отдела фармацевтической разработки Центра трансфера фармацевтических технологий им. М.В. Дорогова, ФГБОУ ВО ЯГПУ им. К.Д. Ушинского.</p><p>150030, Россия, г. Ярославль, ул. Технопарковая, д. 11/2.</p></bio><bio xml:lang="en"><p>engineer of the Department of Pharmaceutical Development of M.V. Dorogov Pharmaceutical Technology Transfer Center of Yaroslavl State Pedagogical University n.a. K.D. Ushinsky. </p><p>5, Revolutsionnaya Str., Yaroslavl, Russia, 150000</p></bio><email xlink:type="simple">olgagasilina23@yandex.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/0000-0002-4275-9037</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Вольхин</surname><given-names>Н. Н.</given-names></name><name name-style="western" xml:lang="en"><surname>Volkhin</surname><given-names>N. N.</given-names></name></name-alternatives><bio xml:lang="ru"><p>младший научный сотрудник отдела фармакологических исследований Центра трансфера фармацевтических технологий им. М.В. Дорогова, ФГБОУ ВО ЯГПУ им. К.Д. Ушинского. </p><p>150030, Россия, г. Ярославль, ул. Технопарковая, д. 11/2.</p></bio><bio xml:lang="en"><p>junior research fellow of the Department of Pharmacological Studies of M.V. Dorogov Pharmaceutical Technology Transfer Center of Yaroslavl State Pedagogical University n.a. K.D. Ushinsky.</p><p>5, Revolutsionnaya Str., Yaroslavl, Russia, 150000</p></bio><email xlink:type="simple">nnvolkhin@ysmu.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/0009-0007-8435-7689</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Петухов</surname><given-names>С. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Petukhov</surname><given-names>S. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>инженер отдела фармакологических исследований Центра трансфера фармацевтических технологий им. М.В. Дорогова, ФГБОУ ВО ЯГПУ им. К.Д. Ушинского; младший научный сотрудник Института фармации ФГБОУ ВО ЯГМУ Минздрава России. </p><p>150030, Россия, г. Ярославль, ул. Технопарковая, д. 11/2.</p><p>150000, Россия, г. Ярославль, ул. Революционная, д. 5.</p></bio><bio xml:lang="en"><p>engineer of the Department of Pharmacological Studies of M.V. Dorogov Pharmaceutical Technology Transfer Center of Yaroslavl State Pedagogical University n.a. K.D. Ushinsky; junior research fellow of the Institute of Pharmacy of Yaroslavl State Medical University. </p><p>Bldg 2, 11, Technoparkovaya Str., Yaroslavl, Russia, 150030</p><p>5, Revolutsionnaya Str., Yaroslavl, Russia, 150000</p></bio><email xlink:type="simple">sspp465@mail.ru</email><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Федеральное государственное бюджетное образовательное учреждение высшего образования «Ярославский государственный медицинский университет» Министерства здравоохранения Российской Федерации</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Yaroslavl State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>1. Федеральное государственное бюджетное образовательное учреждение высшего образования «Ярославский государственный педагогический университет им. К.Д. Ушинского».&#13;
2. Федеральное государственное бюджетное образовательное учреждение высшего образования «Ярославский государственный медицинский университет» Министерства здравоохранения Российской Федерации.</institution><country>Россия</country></aff><aff xml:lang="en"><institution>1.Yaroslavl State Pedagogical University named after K.D. Ushinsky.&#13;
2.Yaroslavl 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 «Ярославский государственный педагогический университет им. К.Д. Ушинского»</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Yaroslavl State Medical University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>20</day><month>11</month><year>2023</year></pub-date><volume>11</volume><issue>3</issue><fpage>240</fpage><lpage>254</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Хохлов А.Л., Яичков И.И., Шетнев А.А., Ивановский С.А., Корсаков М.К., Гасилина О.А., Вольхин Н.Н., Петухов С.С., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Хохлов А.Л., Яичков И.И., Шетнев А.А., Ивановский С.А., Корсаков М.К., Гасилина О.А., Вольхин Н.Н., Петухов С.С.</copyright-holder><copyright-holder xml:lang="en">Khokhlov A.L., Yaichkov I.I., Shetnev A.A., Ivanovskiy S.A., Korsakov M.K., Gasilina O.A., Volkhin N.N., Petukhov S.S.</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/1356">https://www.pharmpharm.ru/jour/article/view/1356</self-uri><abstract><sec><title>Цель</title><p>Цель. Определение продуктов биотрансформации нового селективного ингибитора карбоангидразы II – 4-(2-метил-1,3-оксазол-5-ил)-бензолсульфонамида.</p></sec><sec><title>Материалы и методы</title><p>Материалы и методы. Исследование проводили на 3 крысах-самцах породы Wistar и 3 кроликах породы Советская шиншилла. Суспензию препарата вводили внутрибрюшинным способом крысам в дозировке 20 мг/кг, кроликам – в дозировке 1,6 мг/кг. Образцы крови животных отбирали до введения и через 1, 2, 4 и 24 ч после. У крыс также выполняли забор мочи до введения и в промежутки 0–4, 4–8 и 8–24 ч после. Идентификацию метаболитов в крови, моче и плазме осуществляли с помощью метода ВЭЖХ-МС/МС. Для хроматографического разделения использовали колонку Poroshell 120EC-C18 (50×3,0 мм, 2,7 мкм) с предколонкой Zorbax Eclipse Plus C18 (12,5×2,1 мм, 5,0 мкм). Предполагаемые метаболиты синтезировали, подтверждали их структуру методом ЯМР-спектроскопии и масс-спектрометрии высокого разрешения. Полученные вещества сопоставляли с идентифицированными в биологических жидкостях веществами по времени удерживания, основным MRM-переходам и масс-спектрам.</p></sec><sec><title>Результаты</title><p>Результаты. При анализе проб плазмы, крови и мочи обнаружен N-гидроксиметаболит, образовавшийся путём присоединения атома кислорода к молекуле препарата. Хроматографические пики данного соединения были идентифицированы на MRM-переходах 255→159, 255→117, 255→89 m/z на 7,2 мин анализа. Были синтезированы N-оксид 4-(2-метил-1,3-оксазол-5-ил)-бензолсульфонамида и N-гидрокси-4-(2-метил-1,3-оксазол-5-ил)-бензолсульфонамид, которые потенциально могли быть получены в процессе биотрансформации. В ходе подтверждающих ВЭЖХ-МС/МС-испытаний по совпадению времён удерживания, соотношения площадей пиков на основных MRM-переходах и масс-спектров установлено, что идентифицированный метаболит – N-гидроксипроизводное препарата. Хроматографические пики N-оксида, обнаруженные при анализе модельных смесей стандартного образца на MRM-переходах 255→175, 255→133, 255→89 m/z при времени удерживания 5,43 мин, отсутствовали в образцах животных.</p></sec><sec><title>Заключение</title><p>Заключение. Изучаемый препарат метаболизируется с образованием единственного метаболита N-гидрокси-4-(2-метил-1,3-оксазол-5-ил)-бензолсульфонамида. Данное соединение обнаружено в свежеотобранных пробах биологических жидкостей обоих видов животных. Структура метаболита подтверждена методом ВЭЖХ-МС/МС путём сравнения с синтезированным стандартным образцом.</p></sec></abstract><trans-abstract xml:lang="en"><p>The aim of the study was to determine biotransformation products of a new selective carbonic anhydrase II inhibitor – 4-(2-methyl-1,3-oxazole-5-yl)-benzenesulfonamide.</p><sec><title>Materials and methods</title><p>Materials and methods. The study was conducted on 3 Wistar rats and 3 rabbits of the Soviet Chinchilla breed. The suspension of the drug was administered intraperitoneally to rats at a dosage of 20 mg/kg, to rabbits - at a dosage of 1.6 mg/kg. The animal blood samples were collected before the administration and 1, 2, 4, 24 h after. Urine sampling was also performed in the rats before the administration and in the intervals of 0–4, 4–8, 8–24 h after. The identification of metabolites in blood, urine and plasma was carried out using HPLC-MS/MS. Poroshell 120 C 18 column (50×3.0 mm, 2.7 µm) with a Zorbax Eclipse Plus C18 pre-column (12.5×2.1 mm, 5.0 µm) was used for the chromatographic separation. The assumed metabolites were synthesized, their structure was confirmed by the NMR spectroscopy method and a high-resolution mass spectrometry. The obtained substances were compared with the substances identified in biological fluids by retention time, the main MRM-transitions and mass spectra.</p></sec><sec><title>Results</title><p>Results. The N-hydroxymetabolite was revealed in the analyses of plasma, blood and urine samples which had been formed by the addition of an oxygen atom to the drug molecule. Chromatographic peaks of this compound were identified at the MRM-transitions of 255→159, 255→117, 255→89 m/z at the 7.2nd min of the analysis. The N-oxide of 4-(2-methyl-1,3-oxazole-5-yl)-benzenesulfonamide and N-hydroxy-4-(2-methyl-1,3-oxazole-5-yl)-benzenesulfonamide were synthesized; potentially, they could have been obtained during the biotransformation. During the confirmatory HPLC-MS/MS tests based on the coincidence of the retention times, the main MRM transitions and mass spectra, the ratio of the peak areas at the identified metabolite it was established that an N-hydroxy derivative. Chromatographic peaks of the N-oxide detected in the analysis of the model mixtures of the standard substance at the MRM-transitions of 255→175, 255→133, 255→89 m/z at the retention time of 5.43 min, were absent in the animal samples.</p></sec><sec><title>Conclusion</title><p>Conclusion. The studied drug is metabolized to form a single metabolite of N-hydroxy-4-(2-methyl-1,3-oxazole-5-yl)-benzenesulfonamide. This compound was found in freshly collected samples of biological fluids of both animal species. The structure of the metabolite was confirmed by the HPLC-MS/MS-method by comparison with the synthesized standard substance.</p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>биотрансформация</kwd><kwd>идентификация метаболитов</kwd><kwd>селективный ингибитор карбоангидразы II</kwd><kwd>ВЭЖХ-МС/МС</kwd><kwd>N-гидроксисульфонамид</kwd></kwd-group><kwd-group xml:lang="en"><kwd>biotransformation</kwd><kwd>metabolite identification</kwd><kwd>selective carbonic anhydrase II inhibitor</kwd><kwd>HPLC-MS/MS</kwd><kwd>N-hydroxysulfonamide</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Исследование биотрансформации (биоаналитическая часть и эксперимент на животных) выполнена за счёт средств государственного задания Министерства здравоохранения Российской Федерации «Разработка лекарственного препарата для лечения остроугольной глаукомы» (№ 1022051100011-8-3.1.5;3.2.17). Синтез лекарственного вещества и его метаболитов выполнен за счет гранта Министерства просвещения Российской Федерации «Разработка инновационного лекарственного средства для лечения открытоугольной глаукомы путем селективного ингибирования карбоангидразы II» № 073-00077-21-02 (реестровая запись № 730000Ф.99.1.БВ10АА00006).</funding-statement><funding-statement xml:lang="en">The biotransformation study (bioanalytical part and animal experiment) was carried out using the funds of the state task of the Ministry of Health of the Russian Federation «Development of a drug for the treatment of acute-angle glaucoma» (No. 1022051100011-8-3.1.5;3.2.17). 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