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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Russian Journal of General Chemistry</journal-id><journal-title-group><journal-title xml:lang="en">Russian Journal of General Chemistry</journal-title><trans-title-group xml:lang="ru"><trans-title>Журнал общей химии</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0044-460X</issn><issn publication-format="electronic">3034-5596</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">699467</article-id><article-id pub-id-type="doi">10.7868/S3034559625110052</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Synthesis, Acute Toxicity and Analgesic Activity of <italic>N</italic>-Aryl-2,3-dimethyl-4-thioxo-3,4,5,6-tetrahydro-2<italic>H</italic>-2,6-methanobenzo[<italic>g</italic>][1,3,5]oxadiazocine-11-carboxamides</article-title><trans-title-group xml:lang="ru"><trans-title>СИНТЕЗ, ОЦЕНКА ОСТРОЙ ТОКСИЧНОСТИ И АНАЛЬГЕТИЧЕСКОЙ АКТИВНОСТИ N-АРИЛ-2,3-ДИМЕТИЛ-4-ТИОКСО-3,4,5,6- ТЕТРАГИДРО-2<italic>H</italic>-2,6-МЕТАНОБЕНЗО[<italic>g</italic>][1,3,5]- ОКСАДИАЗОЦИН-11-КАРБОКСАМИДОВ</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0009-0008-0198-2364</contrib-id><name-alternatives><name xml:lang="en"><surname>Manapov</surname><given-names>R. R</given-names></name><name xml:lang="ru"><surname>Манапов</surname><given-names>Р. Р</given-names></name></name-alternatives><email>-</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9932-9628</contrib-id><name-alternatives><name xml:lang="en"><surname>Zamarayeva</surname><given-names>T. M</given-names></name><name xml:lang="ru"><surname>Замараева</surname><given-names>Т. М</given-names></name></name-alternatives><email>tanyapgfa@yandex.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-3924-3715</contrib-id><name-alternatives><name xml:lang="en"><surname>Slepova</surname><given-names>N. V</given-names></name><name xml:lang="ru"><surname>Слепова</surname><given-names>Н. В</given-names></name></name-alternatives><email>-</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2227-8313</contrib-id><name-alternatives><name xml:lang="en"><surname>Rudakova</surname><given-names>I. P</given-names></name><name xml:lang="ru"><surname>Рудакова</surname><given-names>И. П</given-names></name></name-alternatives><email>-</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8817-0543</contrib-id><name-alternatives><name xml:lang="en"><surname>Dmitriev</surname><given-names>M. V</given-names></name><name xml:lang="ru"><surname>Дмитриев</surname><given-names>М. В</given-names></name></name-alternatives><email>-</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Perm State Pharmaceutical Academy of the Ministry of Health of the Russian Federation</institution></aff><aff><institution xml:lang="ru">Пермская государственная фармацевтическая академия Министерства здравоохранения Российской Федерации</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Perm State National Research University</institution></aff><aff><institution xml:lang="ru">Пермский государственный национальный исследовательский университет</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2025-11-15" publication-format="electronic"><day>15</day><month>11</month><year>2025</year></pub-date><volume>95</volume><issue>11-12</issue><issue-title xml:lang="en">VOL 95, NO11-12 (2025)</issue-title><issue-title xml:lang="ru">ТОМ 95, №11-12 (2025)</issue-title><fpage>521</fpage><lpage>526</lpage><history><date date-type="received" iso-8601-date="2025-12-25"><day>25</day><month>12</month><year>2025</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2025, Russian Academy of Sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2025, Российская академия наук</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="en">Russian Academy of Sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/" start_date="2026-12-15"/></permissions><self-uri xlink:href="https://transsyst.ru/0044-460X/article/view/699467">https://transsyst.ru/0044-460X/article/view/699467</self-uri><abstract xml:lang="en"><p>The reaction of <italic>N</italic>-aryl-3-oxobutanamides with salicylic aldehyde and N-methylthiourea in ethanol in the presence of KHSO<sub>4</sub> leads to <italic>N</italic>-aryl-2,3-dimethyl-4-thioxo-3,4,5,6-tetrahydro-2<italic>H</italic>-2,6-methanobenzo[<italic>g</italic>]|[1,3,5]-oxadiazocine-11-carboxamides. Structure of the compounds was established using <sup>1</sup>H, <sup>13</sup>C NMR spectroscopy and single crystal X-ray crystallography. Acute toxicity and analgesic activity of the synthesized compounds were studied.</p></abstract><trans-abstract xml:lang="ru"><p>Взаимодействие N-арил-3-оксобутанамидов с салициловым альдегидом и N-метилтиомочевиной в этаноле в присутствии гидросульфата калия приводит к образованию N-арил-2,3-диметил-4-тиоксо-3,4,5,6-тетрагидро-2<italic>H</italic>-2,6-метанобензо[<italic>g</italic>][1,3,5]оксадиазоцин-11-карбоксамидов. Структура полученных соединений установлена методами спектроскопии ЯМР <sup>1</sup>Н, <sup>13</sup>С и рентгеноструктурного анализа. Изучены острая токсичность и анальгетическая активность синтезированных соединений.</p></trans-abstract><kwd-group xml:lang="en"><kwd>N-aryl-3-oxobutanamides</kwd><kwd>salicylic aldehyde</kwd><kwd>N-methylthiourea</kwd><kwd>2,6-methano-1,3,5-benzoxadiazocine-4-thiones</kwd><kwd>acute toxicity</kwd><kwd>analgesic activity</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>N-ариламиды ацетилуксусной кислоты</kwd><kwd>салициловый альдегид</kwd><kwd>N-метилтиомочевина</kwd><kwd>2,6-метано-1,3,5-бензоксадиазоцин-4-тионы</kwd><kwd>острая токсичность</kwd><kwd>анальгетическая активность</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Шкурко О.П. // ХГС. 2022. Т. 58. №6/7. С. 279</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>El-Hamouly W.S., El-Khamry A.-M.A., Abbas E.M.H. // Indian J. Chem. (B). 2006. Vol. 45. 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