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Zhao ZX, Zou QY, Ma YH, Morris-Natschke SL, Li XY, Shi LC, Ma GX, Xu XD, Yang MH, Zhao ZJ, Li YX, Xue J, Chen CH, Wu HF. Recent progress on triterpenoid derivatives and their anticancer potential. PHYTOCHEMISTRY 2024; 229:114257. [PMID: 39209239 DOI: 10.1016/j.phytochem.2024.114257] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/17/2024] [Revised: 08/19/2024] [Accepted: 08/20/2024] [Indexed: 09/04/2024]
Abstract
Cancer poses a significant global public health challenge, with commonly used adjuvant or neoadjuvant chemotherapy often leading to adverse side effects and drug resistance. Therefore, advancing cancer treatment necessitates the ongoing development of novel anticancer agents with diverse structures and mechanisms of action. Natural products remain crucial in the process of drug discovery, serving as a primary source for pharmaceutical leads and therapeutic advancements. Triterpenoids are particularly compelling due to their complex structures and wide array of biological activities. Recent research has demonstrated that naturally occurring triterpenes and their derivatives have the potential to serve as promising candidates for new drug development. This review aims to comprehensively explore the anticancer properties of triterpenoids and their synthetic analogs, with a focus on recent advancements. Various aspects, such as synthesis, phytochemistry, and molecular simulation for structure-activity relationship analyses, are summarized. It is anticipated that triterpenoid derivatives will emerge as notable anticancer agents following further investigation into their mechanisms of action and in vivo studies.
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Affiliation(s)
- Zi-Xuan Zhao
- Beijing Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China
| | - Qiong-Yu Zou
- Key Laboratory of Research and Utilization of Ethnomedicinal Plant Resources of Hunan Province, Key Laboratory of Hunan Higher Education for Western Hunan Medicinal Plant and Ethnobotany, Hunan Provincial Higher Education Key Laboratory of Intensive Processing Research on Mountain Ecological Food, Key Laboratory of Natural Products Research and Utilization in Wuling Mountain Area, Department of Chemistry & Chemical Engineering, Huaihua University, Huaihua, 418008, China
| | - Ying-Hong Ma
- Beijing Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China
| | - Susan L Morris-Natschke
- Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, 27599, USA
| | - Xiang-Yuan Li
- Beijing Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China
| | - Lin-Chun Shi
- Beijing Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China
| | - Guo-Xu Ma
- Beijing Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China
| | - Xu-Dong Xu
- Beijing Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China
| | - Mei-Hua Yang
- Beijing Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China
| | - Zi-Jian Zhao
- Key Laboratory of Research and Utilization of Ethnomedicinal Plant Resources of Hunan Province, Key Laboratory of Hunan Higher Education for Western Hunan Medicinal Plant and Ethnobotany, Hunan Provincial Higher Education Key Laboratory of Intensive Processing Research on Mountain Ecological Food, Key Laboratory of Natural Products Research and Utilization in Wuling Mountain Area, Department of Chemistry & Chemical Engineering, Huaihua University, Huaihua, 418008, China
| | - Yuan-Xiang Li
- Key Laboratory of Research and Utilization of Ethnomedicinal Plant Resources of Hunan Province, Key Laboratory of Hunan Higher Education for Western Hunan Medicinal Plant and Ethnobotany, Hunan Provincial Higher Education Key Laboratory of Intensive Processing Research on Mountain Ecological Food, Key Laboratory of Natural Products Research and Utilization in Wuling Mountain Area, Department of Chemistry & Chemical Engineering, Huaihua University, Huaihua, 418008, China
| | - Jing Xue
- NHC Key Laboratory of Human Disease Comparative Medicine, Beijing Key Laboratory for Animal Models of Emerging and Remerging Infectious Diseases, Institute of Laboratory Animal Science, Chinese Academy of Medical Sciences and Comparative Medicine Center, Peking Union Medical College, Beijing, 100021, China.
| | - Chin-Ho Chen
- Antiviral Drug Discovery Laboratory, Surgical Oncology Research Facility, Duke University Medical Center, Durham, NC, 27710, USA.
| | - Hai-Feng Wu
- Beijing Key Laboratory of New Drug Discovery Based on Classic Chinese Medicine Prescription, Key Laboratory of Bioactive Substances and Resources Utilization of Chinese Herbal Medicine, Ministry of Education, Institute of Medicinal Plant Development, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing, 100193, China; Key Laboratory of Research and Utilization of Ethnomedicinal Plant Resources of Hunan Province, Key Laboratory of Hunan Higher Education for Western Hunan Medicinal Plant and Ethnobotany, Hunan Provincial Higher Education Key Laboratory of Intensive Processing Research on Mountain Ecological Food, Key Laboratory of Natural Products Research and Utilization in Wuling Mountain Area, Department of Chemistry & Chemical Engineering, Huaihua University, Huaihua, 418008, China; Natural Products Research Laboratories, UNC Eshelman School of Pharmacy, University of North Carolina, Chapel Hill, NC, 27599, USA.
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Ivasechko I, Lozynskyi A, Senkiv J, Roszczenko P, Kozak Y, Finiuk N, Klyuchivska O, Kashchak N, Manko N, Maslyak Z, Lesyk D, Karkhut A, Polovkovych S, Czarnomysy R, Szewczyk O, Kozytskiy A, Karpenko O, Khyluk D, Gzella A, Bielawski K, Bielawska A, Dzubak P, Gurska S, Hajduch M, Stoika R, Lesyk R. Molecular design, synthesis and anticancer activity of new thiopyrano[2,3-d]thiazoles based on 5-hydroxy-1,4-naphthoquinone (juglone). Eur J Med Chem 2023; 252:115304. [PMID: 37001390 DOI: 10.1016/j.ejmech.2023.115304] [Citation(s) in RCA: 4] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/21/2023] [Revised: 03/20/2023] [Accepted: 03/22/2023] [Indexed: 03/30/2023]
Abstract
A series of 11-substituted 9-hydroxy-3,5,10,11-tetrahydro-2H-benzo[6,7]thiochromeno[2,3-d][1,3]thiazole-2,5,10-triones 3.1-3.13 were synthesized via hetero-Diels-Alder reaction of 5-ene-4-thioxo-2-thiazolidinones and 5-hydroxy-1,4-naphthoquinone (juglone). The structure of newly synthesized compounds was established by means of spectral data and a single-crystal X-ray diffraction analysis. The synthesized compounds were tested on a panel of cell lines representing different types of cancer as well as normal and pseudonormal cells and peripheral human blood lymphocytes. Compound 3.10 was found to be the most active derivative, exhibiting a cytotoxic effect similar to doxorubicin's one (IC50 ranged from 0.6 to 5.98 μM), but less toxic to normal and pseudonormal cells. All synthesized compounds were able to interact with DNA, although their anticancer activity did not correlate with the potency of interaction with DNA. The status of p53 in colorectal cancer cells correlated with the activity of the synthesized derivatives 3.1, 3.7, and 3.10. Compound 3.10 did not have an acute toxic effect on the body of С57BL/6 mice, unlike the well-known anticancer drug doxorubicin, which was used as a positive control. The injection of 3.10 (20 mg/kg) to mice had no effect on the counts of leukocytes, erythrocytes, platelets and hemoglobin level in their blood, in contrast to doxorubicin, which caused anemia and leukopenia, indicating bio-tolerance of 3.10in vivo.
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Sun K, Zhao T, Liu L, Mu X, Sun J. Anticancer Structure‐activity Relationships and Potential Target Exploration of the Natural Product Gypsogenin. ChemistrySelect 2023. [DOI: 10.1002/slct.202300072] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2023]
Affiliation(s)
- Kang‐Ping Sun
- School of Parmacy and Pharmaceutical Sciences & Institue of Materia Medica Shangdong First Medical University & Shandong Academy of Medical Sciences, Jinan No. 6699, Qingdao Road Shandong 250117 Jinan China
- NHC Key Laboratory of biotechnology drugs (Shandong Academy of Medical Sciences), Jinan Shandong 250117 China
- Key Lab for Rare & Uncommon Diseases of Shandong Province, Jinan Shandong 250117 China
| | - Ting‐Ting Zhao
- School of Parmacy and Pharmaceutical Sciences & Institue of Materia Medica Shangdong First Medical University & Shandong Academy of Medical Sciences, Jinan No. 6699, Qingdao Road Shandong 250117 Jinan China
- NHC Key Laboratory of biotechnology drugs (Shandong Academy of Medical Sciences), Jinan Shandong 250117 China
- Key Lab for Rare & Uncommon Diseases of Shandong Province, Jinan Shandong 250117 China
| | - Lei Liu
- School of Parmacy and Pharmaceutical Sciences & Institue of Materia Medica Shangdong First Medical University & Shandong Academy of Medical Sciences, Jinan No. 6699, Qingdao Road Shandong 250117 Jinan China
- NHC Key Laboratory of biotechnology drugs (Shandong Academy of Medical Sciences), Jinan Shandong 250117 China
- Key Lab for Rare & Uncommon Diseases of Shandong Province, Jinan Shandong 250117 China
| | - Xiao‐Dong Mu
- School of Parmacy and Pharmaceutical Sciences & Institue of Materia Medica Shangdong First Medical University & Shandong Academy of Medical Sciences, Jinan No. 6699, Qingdao Road Shandong 250117 Jinan China
- NHC Key Laboratory of biotechnology drugs (Shandong Academy of Medical Sciences), Jinan Shandong 250117 China
- Key Lab for Rare & Uncommon Diseases of Shandong Province, Jinan Shandong 250117 China
| | - Jing‐Yong Sun
- School of Parmacy and Pharmaceutical Sciences & Institue of Materia Medica Shangdong First Medical University & Shandong Academy of Medical Sciences, Jinan No. 6699, Qingdao Road Shandong 250117 Jinan China
- NHC Key Laboratory of biotechnology drugs (Shandong Academy of Medical Sciences), Jinan Shandong 250117 China
- Key Lab for Rare & Uncommon Diseases of Shandong Province, Jinan Shandong 250117 China
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Hodoň J, Frydrych I, Trhlíková Z, Pokorný J, Borková L, Benická S, Vlk M, Lišková B, Kubíčková A, Medvedíková M, Pisár M, Šarek J, Das V, Ligasová A, Koberna K, Džubák P, Hajdúch M, Urban M. Triterpenoid pyrazines and pyridines - Synthesis, cytotoxicity, mechanism of action, preparation of prodrugs. Eur J Med Chem 2022; 243:114777. [PMID: 36174412 DOI: 10.1016/j.ejmech.2022.114777] [Citation(s) in RCA: 6] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2022] [Revised: 09/11/2022] [Accepted: 09/12/2022] [Indexed: 12/29/2022]
Abstract
A set of fifteen triterpenoid pyrazines and pyridines was prepared from parent triterpenoid 3-oxoderivatives (betulonic acid, dihydrobetulonic acid, oleanonic acid, moronic acid, ursonic acid, heterobetulonic acid, and allobetulone). Cytotoxicity of all compounds was tested in eight cancer and two non-cancer cell lines. Evaluation of the structure-activity relationships revealed that the triterpenoid core determined whether the final molecule is active or not, while the heterocycle is able to increase the activity and modulate the specificity. Five compounds (1b, 1c, 2b, 2c, and 8) were found to be preferentially and highly cytotoxic (IC50 ≈ 1 μM) against leukemic cancer cell lines (CCRF-CEM, K562, CEM-DNR, or K562-TAX). Surprisingly, compounds 1c, 2b, and 2c are 10-fold more active in multidrug-resistant leukemia cells (CEM-DNR and K562-TAX) than in their non-resistant analogs (CCRF-CEM and K562). Pharmacological parameters were measured for the most promising candidates and two types of prodrugs were synthesized: 1) Sugar-containing conjugates, most of which had improved cell penetration and retained high cytotoxicity in the CCRF-CEM cell line, unfortunately, they lost the selectivity against resistant cells. 2) Medoxomil derivatives, among which compounds 26-28 gained activities of IC50 0.026-0.043 μM against K562 cells. Compounds 1b, 8, 21, 22, 23, and 24 were selected for the evaluation of the mechanism of action based on their highest cytotoxicity against CCRF-CEM cell line. Several experiments showed that the majority of them cause apoptosis via the mitochondrial pathway. Compounds 1b, 8, and 21 inhibit growth and disintegrate spheroid cultures of HCT116 and HeLa cells, which would be important for the treatment of solid tumors. In summary, compounds 1b, 1c, 2b, 2c, 24, and 26-28 are highly and selectively cytotoxic against cancer cell lines and were selected for future in vivo tests and further development of anticancer drugs.
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Affiliation(s)
- Jiří Hodoň
- Department of Organic Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Ivo Frydrych
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 1333/5, 779 00, Olomouc, Czech Republic
| | - Zdeňka Trhlíková
- Department of Organic Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Jan Pokorný
- Department of Organic Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Lucie Borková
- Department of Organic Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Sandra Benická
- Department of Organic Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Martin Vlk
- Czech Technical University in Prague, Faculty of Nuclear Sciences and Physical Engineering, Břehová 7, 115 19, Prague 1, Czech Republic
| | - Barbora Lišková
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 1333/5, 779 00, Olomouc, Czech Republic
| | - Agáta Kubíčková
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 1333/5, 779 00, Olomouc, Czech Republic; Czech Advanced Technologies and Research Institute (CATRIN), Institute of Molecular and Translational Medicine, Palacký University Olomouc, Křížkovského 511/8, 77900, Olomouc, Czech Republic
| | - Martina Medvedíková
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 1333/5, 779 00, Olomouc, Czech Republic
| | - Martin Pisár
- Department of Organic Chemistry, Faculty of Science, Palacký University Olomouc, 17. Listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Jan Šarek
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 1333/5, 779 00, Olomouc, Czech Republic
| | - Viswanath Das
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 1333/5, 779 00, Olomouc, Czech Republic; Czech Advanced Technologies and Research Institute (CATRIN), Institute of Molecular and Translational Medicine, Palacký University Olomouc, Křížkovského 511/8, 77900, Olomouc, Czech Republic
| | - Anna Ligasová
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 1333/5, 779 00, Olomouc, Czech Republic
| | - Karel Koberna
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 1333/5, 779 00, Olomouc, Czech Republic
| | - Petr Džubák
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 1333/5, 779 00, Olomouc, Czech Republic
| | - Marián Hajdúch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 1333/5, 779 00, Olomouc, Czech Republic
| | - Milan Urban
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacký University Olomouc, Hněvotínská 1333/5, 779 00, Olomouc, Czech Republic.
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Rehulka J, Subtelna I, Kryshchyshyn‐Dylevych A, Cherniienko A, Ivanova A, Matveieva M, Polishchuk P, Gurska S, Hajduch M, Zagrijtschuk O, Dzubak P, Lesyk R. Anticancer 5‐arylidene‐2‐(4‐hydroxyphenyl)aminothiazol‐4(5
H
)‐ones as tubulin inhibitors. Arch Pharm (Weinheim) 2022; 355:e2200419. [DOI: 10.1002/ardp.202200419] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/07/2022] [Revised: 08/25/2022] [Accepted: 08/26/2022] [Indexed: 11/08/2022]
Affiliation(s)
- Jiri Rehulka
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry Palacky University Olomouc Olomouc Czech Republic
| | - Ivanna Subtelna
- Department of Pharmaceutical, Organic, and Bioorganic Chemistry Danylo Halytsky Lviv National Medical University Lviv Ukraine
| | - Anna Kryshchyshyn‐Dylevych
- Department of Pharmaceutical, Organic, and Bioorganic Chemistry Danylo Halytsky Lviv National Medical University Lviv Ukraine
| | - Alina Cherniienko
- Department of Pharmaceutical, Organic, and Bioorganic Chemistry Danylo Halytsky Lviv National Medical University Lviv Ukraine
| | - Aleksandra Ivanova
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry Palacky University Olomouc Olomouc Czech Republic
| | - Mariia Matveieva
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry Palacky University Olomouc Olomouc Czech Republic
| | - Pavel Polishchuk
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry Palacky University Olomouc Olomouc Czech Republic
| | - Sona Gurska
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry Palacky University Olomouc Olomouc Czech Republic
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry Palacky University Olomouc Olomouc Czech Republic
| | | | - Petr Dzubak
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry Palacky University Olomouc Olomouc Czech Republic
| | - Roman Lesyk
- Department of Pharmaceutical, Organic, and Bioorganic Chemistry Danylo Halytsky Lviv National Medical University Lviv Ukraine
- Department of Biotechnology and Cell Biology, Medical College, Faculty of Medicine University of Information Technology and Management in Rzeszow Rzeszow Poland
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Synthesis and Biological Evaluation of Novel Allobetulon/Allobetulin-Nucleoside Conjugates as AntitumorAgents. Molecules 2022; 27:molecules27154738. [PMID: 35897914 PMCID: PMC9329720 DOI: 10.3390/molecules27154738] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2022] [Revised: 07/20/2022] [Accepted: 07/20/2022] [Indexed: 11/26/2022] Open
Abstract
Allobetulin is structurally similar tobetulinic acid, inducing the apoptosis of cancer cells with low toxicity. However, both of them exhibited weak antiproliferation against several tumor cell lines. Therefore, the new series of allobetulon/allobetulin–nucleoside conjugates 9a–10i were designed and synthesized for potency improvement. Compounds 9b, 9e, 10a, and 10d showed promising antiproliferative activity toward six tested cell lines, compared to zidovudine, cisplatin, and oxaliplatin based on their antitumor activity results. Among them, compound 10d exhibited much more potent antiproliferative activity against SMMC-7721, HepG2, MNK-45, SW620, and A549 human cancer cell lines than cisplatin and oxaliplatin. In the preliminary study for the mechanism of action, compound 10d induced cell apoptosis and autophagy in SMMC cells, resulting in antiproliferation and G0/G1 cell cycle arrest by regulating protein expression levels of Bax, Bcl-2, and LC3. Consequently, the nucleoside-conjugated allobetulin (10d) evidenced that nucleoside substitution was a viable strategy to improve allobetulin/allobetulon’s antitumor activity based on our present study.
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Patrykei S, Korobko Y, Ogorodniichuk O, Garazd M, Polishchuk P, Džubák P, Gurská S, Hajdúch M, Lesyk R. Synthesis and evaluation of the anticancer activity of some semisynthetic derivatives of rutaecarpine and evodiamine. SYNTHETIC COMMUN 2021. [DOI: 10.1080/00397911.2021.1919712] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/21/2022]
Affiliation(s)
| | | | | | | | - Pavel Polishchuk
- Institute of Molecular and Translational Medicine (IMTM), Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Petr Džubák
- Institute of Molecular and Translational Medicine (IMTM), Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Soňa Gurská
- Institute of Molecular and Translational Medicine (IMTM), Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Marián Hajdúch
- Institute of Molecular and Translational Medicine (IMTM), Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Roman Lesyk
- Department of Pharmaceutical, Organic and Bioorganic Chemistry, Danylo Halytsky Lviv National Medical University, Lviv, Ukraine
- Department of Public Health, Dietetics and Lifestyle Disorders, Faculty of Medicine, University of Information Technology and Management in Rzeszow, Rzeszow, Poland
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9
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Borková L, Frydrych I, Jakubcová N, Adámek R, Lišková B, Gurská S, Medvedíková M, Hajdúch M, Urban M. Synthesis and biological evaluation of triterpenoid thiazoles derived from betulonic acid, dihydrobetulonic acid, and ursonic acid. Eur J Med Chem 2019; 185:111806. [PMID: 31677446 DOI: 10.1016/j.ejmech.2019.111806] [Citation(s) in RCA: 29] [Impact Index Per Article: 5.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2019] [Revised: 10/15/2019] [Accepted: 10/20/2019] [Indexed: 12/19/2022]
Abstract
In this work, 35 new derivatives of betulonic, dihydrobetulonic and ursonic acid were prepared including 30 aminothiazoles and all of them were tested for their in vitro cytotoxic activity in eight cancer cell lines and two non-cancer fibroblasts. Compounds with the IC50 below 5 μM in CCRF-CEM cells and low toxicity in non-cancer fibroblasts (4m, 5c, 5m, 6c, 6m, 7b, and 7c) were further subjected to tests of pharmacological parameters yielding the final set for advanced biological evaluation (4m, 5m, 6m, and 7b). It was proved by several methods, that all of them trigger apoptosis via the intrinsic pathway and derivatives 5m and 7b are the most effective (IC50 2.4 μM and 3.6 μM). They are the best candidates to become potentially new anticancer drugs and will be subjected to in vivo tests in mice. In addition, compounds 6b and 6c deserve more attention because their activity is not limited only to chemosensitive CCRF-CEM cell line. Specifically, compound 6b is highly active against K562 leukemic cell line (0.7 μM) and its IC50 activity in colon cancer HCT116 cell line is 1.0 μM. Compound 6c is active in both normal K562 and resistant K562-TAX cell lines (IC50 3.4 μM and 5.4 μM) and both colon cancer cell lines (HCT116 and HCT116p53-/-, IC50 3.5 μM and 3.4 μM).
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Affiliation(s)
- Lucie Borková
- Department of Organic Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic; Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hněvotínská 5, 779 00, Olomouc, Czech Republic
| | - Ivo Frydrych
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hněvotínská 5, 779 00, Olomouc, Czech Republic
| | - Nikola Jakubcová
- Department of Organic Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Richard Adámek
- Department of Organic Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Barbora Lišková
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hněvotínská 5, 779 00, Olomouc, Czech Republic
| | - Soňa Gurská
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hněvotínská 5, 779 00, Olomouc, Czech Republic
| | - Martina Medvedíková
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hněvotínská 5, 779 00, Olomouc, Czech Republic
| | - Marián Hajdúch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hněvotínská 5, 779 00, Olomouc, Czech Republic
| | - Milan Urban
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hněvotínská 5, 779 00, Olomouc, Czech Republic.
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Perlikova P, Kvasnica M, Urban M, Hajduch M, Sarek J. 2-Deoxyglycoside Conjugates of Lupane Triterpenoids with High Cytotoxic Activity-Synthesis, Activity, and Pharmacokinetic Profile. Bioconjug Chem 2019; 30:2844-2858. [PMID: 31553559 DOI: 10.1021/acs.bioconjchem.9b00565] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/01/2023]
Abstract
A set of 41 glycosidic conjugates of pentacyclic triterpenes was synthesized in order to improve the solubility of highly cytotoxic parent compounds. Their in vitro cytotoxic activity was evaluated in 25 cancer cell lines and 2 noncancer fibroblasts. Fifteen compounds had high cytotoxicity on the T-lymphoblastic leukemia cell line CCRF-CEM and 6 of them were active in multiple cell lines of various histogenic origin and not toxic in fibroblasts. Compound 11a had IC50 of 0.64 μM in CCRF-CEM cells, 0.60 μM in K-562 cells, and 0.37 μM in PC-3 cells; compound 12a had IC50 of 0.64 μM in CCRF-CEM cells and 0.71 μM in SW620 cells; compound 17b had IC50 of 0.86 μM in HCT116 cells and 0.92 μM in PC-3 cells. Compounds 11b and 12b were slightly less active than the previously mentioned derivatives; however, their solubility was significantly better, and therefore they were selected for the in vivo evaluation of the pharmacokinetic profile in mice. In both compounds, the maximum concentration in plasma was achieved very rapidly-the highest level in plasma was found 1 h after administration (22.2, respectively, 6.4 μM). For compound 12b, the resorption was followed with fast elimination, and 12 h after administration, the compound was not detected in plasma. In contrast, compound 11b was eliminated more slowly; it was still present in plasma after 12 h, but its concentration dropped below the detection limit after 24 h. The elimination half-time determined for compound 11b was 2.4 h and for compound 12b just about 1.4 h. These values are reasonable for further drug development.
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Affiliation(s)
- Pavla Perlikova
- Institute of Organic Chemistry and Biochemistry of the Czech Academy of Sciences , Flemingovo n. 2 , 16610 Prague 6, Czech Republic
| | - Miroslav Kvasnica
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research , Institute of Experimental Botany of the Czech Academy of Sciences and Palacky University , Šlechtitelů 27 , 78371 Olomouc , Czech Republic
| | - Milan Urban
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry , Palacky University , Hnevotinská 5 , 77900 , Olomouc , Czech Republic
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry , Palacky University , Hnevotinská 5 , 77900 , Olomouc , Czech Republic
| | - Jan Sarek
- Betulinines , Sazavska 323 , 28167 Stribrna Skalice , Czech Republic
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11
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Nowikow C, Fuerst R, Kauderer M, Dank C, Schmid W, Hajduch M, Rehulka J, Gurska S, Mokshyna O, Polishchuk P, Zupkó I, Dzubak P, Rinner U. Synthesis and biological evaluation of cis-restrained carbocyclic combretastatin A-4 analogs: Influence of the ring size and saturation on cytotoxic properties. Bioorg Med Chem 2019; 27:115032. [DOI: 10.1016/j.bmc.2019.07.048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/31/2019] [Revised: 07/19/2019] [Accepted: 07/28/2019] [Indexed: 10/26/2022]
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12
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Wu G, Chu H, Wang J, Mu Y, Sun J. Synthesis of gypsogenin and gypsogenic acid derivatives with antitumor activity by damaging cell membranes. NEW J CHEM 2019. [DOI: 10.1039/c9nj04287c] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
Forty-five gypsogenin and gypsogenic acid derivatives were synthesized and screened for their cytotoxic activities.
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Affiliation(s)
- Guiying Wu
- School of Medicine and Life Sciences
- University of Jinan-Shandong Academy of Medical Sciences
- Jinan 250200
- China
- Institute of Materia Medica
| | - Haiping Chu
- Institute of Materia Medica
- Shandong Academy of Medical Sciences
- Jinan 250062
- China
- Key Laboratory for Biotech-Drugs Ministry of Health
| | - Jilei Wang
- School of Medicine and Life Sciences
- University of Jinan-Shandong Academy of Medical Sciences
- Jinan 250200
- China
- Institute of Materia Medica
| | - Yanling Mu
- Institute of Materia Medica
- Shandong Academy of Medical Sciences
- Jinan 250062
- China
- Key Laboratory for Biotech-Drugs Ministry of Health
| | - Jingyong Sun
- Institute of Materia Medica
- Shandong Academy of Medical Sciences
- Jinan 250062
- China
- Key Laboratory for Biotech-Drugs Ministry of Health
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13
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Synthesis of Betulinic Acid Derivatives with Modified A-Rings and their Application as Potential Drug Candidates. ASIAN J ORG CHEM 2018. [DOI: 10.1002/ajoc.201800163] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/15/2022]
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14
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Yamansarov EY, Khusnutdinova EF, Lobov AN, Kazakova OB, Suponitsky KY. Oxidation of 3β-Acetoxy-21β-acetyl-20β,28-epoxy-18α,19βH-ursane into Novel gem-Chloronitro- and 1,2,4,5-tetraoxane derivatives. Nat Prod Commun 2018. [DOI: 10.1177/1934578x1801300311] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022] Open
Abstract
The first oxidative transformations of 3β-acetoxy-21β-acetyl-20β,28-epoxy-18α,19β H-ursane at the 21β-acetyl reaction center were performed. Ursane-type 1,2,4,5-tetraoxanes were synthesized by acid-catalyzed peroxy-condensation with cyclohexanone bis-hydroperoxide, and oxidation of the C(28)H2 group to C(28)=O was also observed. The ursane-bearing exogenous oximino-moiety was formed as a mixture of syn- and anti-isomers (1:1). Oxidative chlorination of oxime via NaCl/oxone led to the diastereomeric mixture of novel ( R) and ( S)- gem-chloronitro-derivatives (1:1). The stereochemistry of oximino- and gem-chloronitro- derivatives was established through X-ray analysis and NMR spectroscopy.
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Affiliation(s)
- Emil Yu. Yamansarov
- Ufa Institute of Chemistry, Russian Academy of Sciences, 71 Prospect Oktyabrya, 450054, Ufa, Russian Federation
| | - El'mira F. Khusnutdinova
- Ufa Institute of Chemistry, Russian Academy of Sciences, 71 Prospect Oktyabrya, 450054, Ufa, Russian Federation
| | - Alexander N. Lobov
- Ufa Institute of Chemistry, Russian Academy of Sciences, 71 Prospect Oktyabrya, 450054, Ufa, Russian Federation
| | - Oxana B. Kazakova
- Ufa Institute of Chemistry, Russian Academy of Sciences, 71 Prospect Oktyabrya, 450054, Ufa, Russian Federation
| | - Kirill Yu. Suponitsky
- A.N. Nesmeyanov Institute of Organoelement Compounds, Russian Academy of Sciences, 28 Vavilova St, V-334, 119991, GSP-1, Moscow, Russian Federation
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15
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Triterpenic azines, a new class of compounds with selective cytotoxicity to leukemia cells CCRF-CEM. Future Med Chem 2018; 10:483-491. [DOI: 10.4155/fmc-2017-0171] [Citation(s) in RCA: 13] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/22/2023] Open
Abstract
Aim: From betulinic acid (1a), we synthesized 30-oxobetulinic acid (2a) that is highly cytotoxic against many cancer cell lines; however, its generic toxicity is the main obstacle in further development as cytostatic. Methodology & results: From 2a, we prepared a new class of compounds – nonsymmetrical azines and tested their in vitro cytotoxicity. All new azines with a free 28-COOH group (4a–4e) were highly and selectively cytotoxic against the T-lymphoblastic leukemia cell line CCRF-CEM and exhibited dose-dependent inhibition of RNA and DNA synthesis and other cell-cycle alterations, including the M-phase block. Conclusion: The potential use of azines (4a–4e) in drug development focused on hematological cancers is significantly higher than that of previously studied acids 1a and 2a.
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16
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Eignerova B, Tichy M, Krasulova J, Kvasnica M, Rarova L, Christova R, Urban M, Bednarczyk-Cwynar B, Hajduch M, Sarek J. Synthesis and antiproliferative properties of new hydrophilic esters of triterpenic acids. Eur J Med Chem 2017; 140:403-420. [PMID: 28987603 DOI: 10.1016/j.ejmech.2017.09.041] [Citation(s) in RCA: 21] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2017] [Revised: 09/18/2017] [Accepted: 09/20/2017] [Indexed: 11/17/2022]
Abstract
To improve the properties of cytotoxic triterpenoid acids 1-5, a large set of hydrophilic esters was synthesized. We choose betulinic acid (1), dihydrobetulinic acid (2), 21-oxoacid 3 along with highly active des-E lupane acids 4 and 5 as a model set of compounds for esterification of which the properties needed to be improved. As ester moieties were used - methoxyethanol and 2-(2-methoxyethoxy)ethanol and glycolic unit (type a-d), pyrrolidinoethanol, piperidinoethanol and morpholinoethanol (type f-h), and monosaccharide groups (type i-l). As a result, 56 triterpenic esters (49 new compounds) were obtained and their cytotoxicity on four cancer cell lines and normal human fibroblasts was tested. All new compounds were fully soluble at all tested concentrations, which used to be a problem of the parent compounds 1 and 2. 16 compounds had IC50 < 10 μM on at least one cancer cell line, 12 compounds had cytotoxicity of <10 μM against at least three of four tested cancer cell lines. The highest activity was found for compound 3c (1.8 μM on MCF7, 2.8 μM on HeLa, and 1.6 μM on G-361 cells) which also had no toxicity on non-cancerous BJ fibroblasts at the highest tested concentration (50 μM). High selective cytotoxicity was also found in compounds 1k, 2k, 3c, and 3i that are ideal candidates for drug development. Therefore, more studies to identify the mechanism of action were performed in case of 1k, 3c, and 3g such as effects on cell cycle and apoptosis. It was found that compounds 3c and 3g can induce apoptosis via caspase-3 activation and modulation of protein Bcl-2 in G-361 cells. In conclusion, compounds 1k, 3c, and 3g show high and selective cytotoxicity, therefore they are significantly better candidates for anti-cancer drug development than the parent acids 1-5.
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Affiliation(s)
- Barbara Eignerova
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences, Flemingovo n. 2, 16610 Prague 6, Czech Republic
| | - Michal Tichy
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences, Flemingovo n. 2, 16610 Prague 6, Czech Republic
| | - Jana Krasulova
- Institute of Organic Chemistry and Biochemistry, Academy of Sciences, Flemingovo n. 2, 16610 Prague 6, Czech Republic
| | - Miroslav Kvasnica
- Laboratory of Growth Regulators, Centre of the Region Haná for Biotechnological and Agricultural Research, Institute of Experimental Botany ASCR & Palacky University, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Lucie Rarova
- Department of Chemical Biology and Genetics, Centre of the Region Hana for Biotechnological and Agricultural Research, Palacky University, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Romana Christova
- Department of Chemical Biology and Genetics, Centre of the Region Hana for Biotechnological and Agricultural Research, Palacky University, Šlechtitelů 27, 78371 Olomouc, Czech Republic
| | - Milan Urban
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 5, 779 00, Olomouc, Czech Republic
| | - Barbara Bednarczyk-Cwynar
- Department of Organic Chemistry, Faculty of Pharmacy, Poznan University of Medical Science, Grunvaldzka Str. No. 6, 60-780 Poznań, Poland
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 5, 779 00, Olomouc, Czech Republic
| | - Jan Sarek
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Hnevotinska 5, 779 00, Olomouc, Czech Republic.
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17
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Ozdian T, Holub D, Maceckova Z, Varanasi L, Rylova G, Rehulka J, Vaclavkova J, Slavik H, Moudry P, Znojek P, Stankova J, de Sanctis JB, Hajduch M, Dzubak P. Proteomic profiling reveals DNA damage, nucleolar and ribosomal stress are the main responses to oxaliplatin treatment in cancer cells. J Proteomics 2017; 162:73-85. [DOI: 10.1016/j.jprot.2017.05.005] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/18/2016] [Revised: 04/26/2017] [Accepted: 05/02/2017] [Indexed: 12/18/2022]
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18
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Sidova V, Zoufaly P, Pokorny J, Dzubak P, Hajduch M, Popa I, Urban M. Cytotoxic conjugates of betulinic acid and substituted triazoles prepared by Huisgen Cycloaddition from 30-azidoderivatives. PLoS One 2017; 12:e0171621. [PMID: 28158265 PMCID: PMC5291411 DOI: 10.1371/journal.pone.0171621] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 01/23/2017] [Indexed: 11/18/2022] Open
Abstract
In this work, we describe synthesis of conjugates of betulinic acid with substituted triazoles prepared via Huisgen 1,3-cycloaddition. All compounds contain free 28-COOH group. Allylic bromination of protected betulinic acid by NBS gave corresponding 30-bromoderivatives, their substitution with sodium azides produced 30-azidoderivatives and these azides were subjected to CuI catalysed Huisgen 1,3-cycloaddition to give the final conjugates. Reactions had moderate to high yields. All new compounds were tested for their in vitro cytotoxic activities on eight cancer and two non-cancer cell lines. The most active compounds were conjugates of 3β-O-acetylbetulinic acid and among them, conjugate with triazole substituted by benzaldehyde 9b was the best with IC50 of 3.3 μM and therapeutic index of 9.1. Five compounds in this study had IC50 below 10 μM and inhibited DNA and RNA synthesis and caused block in G0/G1 cell cycle phase which is highly similar to actinomycin D. It is unusual that here prepared 3β-O-acetates were more active than compounds with the free 3-OH group and this suggests that this set may have common mechanism of action that is different from the mechanism of action of previously known 3β-O-acetoxybetulinic acid derivatives. Benzaldehyde type conjugate 9b is the best candidate for further drug development.
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Affiliation(s)
- Veronika Sidova
- Department of Organic Chemistry, Faculty of Science, Palacky University, Olomouc, Czech Republic
| | - Pavel Zoufaly
- Department of Organic Chemistry, Faculty of Science, Palacky University, Olomouc, Czech Republic
| | - Jan Pokorny
- Department of Organic Chemistry, Faculty of Science, Palacky University, Olomouc, Czech Republic
| | - Petr Dzubak
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Igor Popa
- Department of Organic Chemistry, Faculty of Science, Palacky University, Olomouc, Czech Republic
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
| | - Milan Urban
- Department of Organic Chemistry, Faculty of Science, Palacky University, Olomouc, Czech Republic
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University, Olomouc, Czech Republic
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19
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Borkova L, Adamek R, Kalina P, Drašar P, Dzubak P, Gurska S, Rehulka J, Hajduch M, Urban M, Sarek J. Synthesis and Cytotoxic Activity of Triterpenoid Thiazoles Derived from Allobetulin, Methyl Betulonate, Methyl Oleanonate, and Oleanonic Acid. ChemMedChem 2017; 12:390-398. [PMID: 28084676 DOI: 10.1002/cmdc.201600626] [Citation(s) in RCA: 17] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/13/2016] [Revised: 01/12/2017] [Indexed: 12/16/2022]
Abstract
A total of 41 new triterpenoids were prepared from allobetulone, methyl betulonate, methyl oleanonate, and oleanonic acid to study their influence on cancer cells. Each 3-oxotriterpene was brominated at C2 and substituted with thiocyanate; subsequent cyclization with the appropriate ammonium salts gave N-substituted thiazoles. All compounds were tested for their in vitro cytotoxic activity on eight cancer cell lines and two non-cancer fibroblasts. 2-Bromoallobetulone (2 b) methyl 2-bromobetulonate (3 b), 2-bromooleanonic acid (5 b), and 2-thiocyanooleanonic acid (5 c) were best, with IC50 values less than 10 μm against CCRF-CEM cells (e.g., 3 b: IC50 =2.9 μm) as well as 2'-(diethylamino)olean-12(13)-eno[2,3-d]thiazole-28-oic acid (5 f, IC50 =9.7 μm) and 2'-(N-methylpiperazino)olean-12(13)-eno[2,3-d]thiazole-28-oic acid (5 k, IC50 =11.4 μm). Compound 5 c leads to the accumulation of cells in the G2 phase of the cell cycle and inhibits RNA and DNA synthesis significantly at 1×IC50 . The G2 /M cell-cycle arrest probably corresponds to the inhibition of DNA/RNA synthesis, similar to the mechanism of action of actinomycin D. Compound 5 c is new, active, and nontoxic; it is therefore the most promising compound in this series for future drug development. Methyl 2-bromobetulonate (3 b) and methyl 2-thiocyanometulonate (3 c) were found to inhibit nucleic acid synthesis only at 5×IC50 . We assume that in 3 b and 3 c (unlike in 5 c), DNA/RNA inhibition is a nonspecific event, and an unknown primary cytotoxic target is activated at 1×IC50 or lower concentration.
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Affiliation(s)
- Lucie Borkova
- Department of Organic Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Richard Adamek
- Department of Organic Chemistry, Faculty of Science, Palacky University in Olomouc, 17. listopadu 1192/12, 771 46, Olomouc, Czech Republic
| | - Petr Kalina
- Department of Chemistry of Natural Compounds, Faculty of Science, University of Chemistry and Technology, Technicka 5, 166 28, Prague, Czech Republic
| | - Pavel Drašar
- Department of Chemistry of Natural Compounds, Faculty of Science, University of Chemistry and Technology, Technicka 5, 166 28, Prague, Czech Republic
| | - Petr Dzubak
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic
| | - Sona Gurska
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic
| | - Jiri Rehulka
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic
| | - Marian Hajduch
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic
| | - Milan Urban
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic
| | - Jan Sarek
- Institute of Molecular and Translational Medicine, Faculty of Medicine and Dentistry, Palacky University in Olomouc, Hnevotinska 5, 779 00, Olomouc, Czech Republic
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