Синтез и фармакологическая активность различных органических и неорганических солей фенилпроизводных имидазобензимидазола

Авторы

DOI:

https://doi.org/10.18413/rrpharmacology.10.465

Аннотация

Введение. Создание новых опиоидных анальгетиков, лишенных основных нежелательных эффектов - эйфории, угнетения дыхания, толерантности - представляется важной задачей для терапии болевого синдрома. Авторами синтезированы 18 солей 9-пирролидиноэтил-(1a), 9-пиперидиноэтил-(1b) и 9-морфолиноэтил-2-(4-фторфенил)бензо[d]имидазо[1,2-а] имидазола (1c), которые были протестированы на каппа-агонистическую и анальгетическую активность.

Материалы и методы. Специфическая обезболивающая активность исследована на моделях ноцицептивной боли в тестах «Горячая пластина» («Hotplate»), «Плантарный тест» и при нейропатической боли на фоне перевязки седалищного нерва. Взаимосвязь физико-химических и фармакологических свойств соединений была изучена in silico с использованием методов квантовой химии и технологии искусственных нейронных сетей.

Результаты. Установлено, что соединение 4-(2-(2-(4-Fluorophenyl)-benzo[d]imidazo[1,2-a]imidazole-9-yl)ethyl)morfoline dihydrochloride (1c.2HCl) проявляет продолжительное дозозависимое анальгетическое действие в тесте «Hotplate», превосходящее таковое буторфанола в 6 раз, сохраняя статистически значимый эффект в течении 6 часов в «Плантарном тесте» и не вызывая формирования толерантности при 10-дневном введении. На модели нейропатического болевого синдрома 1c.2HCl при 14-дневном введении достоверно уменьшает показатели тактильной и холодовой аллодинии  в 3 и 1,6 раз соответственно, не уступая по активности габапентину. Подтвержден каппа-опиоидергический механизм антиноцицептивного действия соединения 1c.2HCl. Для 1c.2HCl рассчитаны показатели ЕС50, острой токсичности и условный терапевтический индекс, превосходящий каппа-агонист U50488 в 38,8 раз. Методами in silico было показано, что высокий уровень каппа-опиоидной агонистической активности гидрохлоридов, в сравнении с другими солями, обусловлен их более низкой полной энергией образования, совокупно с бóльшим приростом энергии при образовании солевого супрамолекулярного комплекса.

Заключение. Выявлено наиболее активное соединение - 1c.2HCl, для которого выявлена каппа-опиоидная активность in vitro и анальгетические свойства на различных моделях in vivo. Показано, что соединение не вызывает формирования толерантности и не является токсичным.

Графическая аннотация

Ключевые слова:

опиоидные анальгетики, каппа-опиоидные агонисты, ноцицептивная и нейропатическая боль, производные имидазобензимидазола, искусственные нейронные сети, квантово-химическое моделирование

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Вклад авторов

Ольга Н. Жуковская, Научно-исследовательский институт физической и органической химии

PhD in Chemical Sciences, Senior researcher at the Laboratory of Organic Synthesis, Institute of Physical and Organic Chemistry, Rostov-on-Don, Russia; e-mail: zhukowskaia.ol@yandex.ru; ORCID ID https://orcid.org/0000-0003-2485-2139. The author proposed the design of the structures, synthesized the compounds, studied their structure, and wrote the chemical part of text.

Наталья В. Елисеева, Волгоградский государственный медицинский университет

PhD in Medical Sciences, Associate Professor of the Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Volgograd; e-mail: nvkirillova@rambler.ru; ORCID ID https://orcid.org/0000-0002-2243-5326. The author was engaed in obtaining, analyzing and interpreting pharmacological data, editing the pharmacological part of the manuscript.

Павел М. Васильев, Волгоградский государственный медицинский университет

Doctor Habil. of Biological Sciences, Full Professor of the Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Volgograd; e-mail: pvassiliev@mail.ru; ORCID ID https://orcid.org/0000-0002-8188-5052. The author was engaed in performing computational studies, analyzing and interpreting computational results, and editing the computational part of the manuscript.

Глеб В. Придворов, Волгоградский государственный медицинский университет

PhD student, Assistant of the Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Volgograd; e-mail: gleb.pridvorov@gmail.com; ORCID ID https://orcid.org/0000-0002-8070-693X. The author was engaed in conducting experimental work and mathematical processing of the obtained data.

Олеся Ю. Гречко, Volgograd State Medical University

Doctor Habil. of Medical Sciences, Full Professor of the Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Volgograd; e-mail: olesiagrechko@mail.ru; ORCID ID https://orcid.org/0000-0002-4184-4897. The author was engaed in obtaining, analyzing.

Анатолий С. Морковник, Institute of Physical and Organic Chemistry

Doctor Habil. of Chemical Sciences, Head of the Laboratory of Organic Synthesis, Institute of Physical and Organic Chemistry, Rostov-on-Don, Russia; e-mail: asmork@mail.ru; ORCID ID https://orcid.org/0000-0002-9182-6101. The author was engaged in editing the chemical part of the manuscript.

Александр А. Спасов, Volgograd State Medical University

Doctor Habil. of Medical Sciences, Professor, Member of the Russian Academy of Sciences, Head of the Department of Pharmacology and Bioinformatics, Volgograd State Medical University, Volgograd; e-mail: aspasov@mail.ru; ORCID ID https://orcid.org/0000-0002-7185-4826. The author proposed the concept and design of the manuscript and approved of the final version of the manuscript.

Опубликован

30.06.2024

Как цитировать

Zhukovskaya ON, Eliseeva NV, Vassiliev PM, Pridvorov GV, Grechko OY, Morkovnik AS, Spasov AA (2024) Synthesis and pharmacological activity of various organic and inorganic salts of phenyl derivatives of imidazobenzimidazole. Research Results in Pharmacology 10(2): 119–133. https://doi.org/10.18413/rrpharmacology.10.465

Выпуск

Раздел

Экспериментальная фармакология