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Zheng X, Guo X, Wang H, Zhou PP, Chen X. Total Synthesis of (±)-Rubriflordilactone A. J Am Chem Soc 2024; 146:7198-7203. [PMID: 38456819 DOI: 10.1021/jacs.4c01033] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/09/2024]
Abstract
A new and efficient synthesis of rubriflordilactone A has been realized. The key transformations include the following: (1) an intramolecular Prins cyclization to establish the seven-membered ring containing two contiguous stereocenters; (2) a Mukaiyama hydration/oxa-Michael cascade to construct the B-ring; and (3) an unprecedented stereocontrol intermolecular o-QM type [4 + 2]-cycloaddition to rapidly assemble core structure of rubriflordilactone A.
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Affiliation(s)
- Xudong Zheng
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu 730000, China
| | - Xinlong Guo
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu 730000, China
| | - Hongyu Wang
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu 730000, China
| | - Pan-Pan Zhou
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu 730000, China
| | - Xiaoming Chen
- State Key Laboratory of Applied Organic Chemistry and College of Chemistry and Chemical Engineering, Lanzhou University, 222 South Tianshui Road, Lanzhou, Gansu 730000, China
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Arora P, Nainwal LM, Gupta G, Singh SK, Chellappan DK, Oliver BG, Dua K. Orally administered solasodine, a steroidal glycoalkaloid, suppresses ovalbumin-induced exaggerated Th2-immune response in rat model of bronchial asthma. Chem Biol Interact 2022; 366:110138. [PMID: 36084726 DOI: 10.1016/j.cbi.2022.110138] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/24/2022] [Revised: 08/22/2022] [Accepted: 08/26/2022] [Indexed: 11/03/2022]
Abstract
Bronchial asthma is a chronic lung disorder, that affects an estimated 262 million people worldwide, thereby, causing a large socio-economic burden. Drug molecules from natural sources have exhibited a good promise in providing an alternative therapy in many chronic ailments. Solasodine, a glycoalkaloid has received an immense interest due to its large pharmacological and industrial value, however, its usefulness in asthma control has not been investigated till date. In this work, solasodine was tested for its ability to reverse several characteristics of bronchial asthma induced by intraperitoneal injection of ovalbumin (OVA) and aluminium hydroxide in experimental rats. Treating asthmatic animals with solasodine (1 mg/kg b.w. or 10 mg/kg b.w.) or dexamethasone (2.5 mg/kg b.w.) reversed OVA-induced airway hyperresponsiveness, infiltration of inflammatory cells and histamine levels in the airways. Furthermore, as compared to OVA-control rats, allergen-induced elevated levels of IgE, nitrites, nitric oxide, and pro-inflammatory mediators, including TNF-α, IL-1β, LTD-4, and Th2-cytokines, particularly, IL-4, IL-5 were remarkably reduced in both bronchoalveolar lavage fluid and blood. These findings are supported by significant protection offered by various treatments against OVA-induced airway inflammation and mast cell degranulation in mesenteric tissues. Further, In-silico molecular docking studies performed to determine inhibitory potential of solasodine at IL-4 and IL-5, demonstrated strong affinity of phytocompound for these receptors than observed with antagonists previously reported. Results of current study imply that solasodine has therapeutic promise in allergic asthma, presumably due to its ability to prevent mast cell degranulation and consequent generation of histamine and Th2-associated cytokines in airways.
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Affiliation(s)
- Poonam Arora
- Department of Pharmacognosy and Phytochemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India; Department of Pharmacognosy and Phytochemistry, SGT College of Pharmacy, SGT University, Gurugram, Haryana, India.
| | - Lalit Mohan Nainwal
- Department of Pharmaceutical Chemistry, School of Pharmaceutical Education and Research, Jamia Hamdard, New Delhi, India; School of Medical & Allied Sciences, G. D. Goenka University, Sohna Road, Gurugram, Haryana, India.
| | - Gaurav Gupta
- School of Pharmacy, Suresh Gyan Vihar University, Jaipur, Rajasthan, India; Department of Pharmacology, Saveetha Dental College, Saveetha Institute of Medical and Technical Sciences, Saveetha University, Chennai, India; Uttaranchal Institute of Pharmaceutical Sciences, Uttaranchal University, Dehradun, 248007, India
| | - Sachin Kumar Singh
- School of Pharmacy and Pharmaceutical Science, Lovely Professional University, India; Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, Australia
| | - Dinesh Kumar Chellappan
- School of Pharmacy, International Medical University, Bukit Jalil, Kuala Lumpur, 57000, Malaysia
| | - Brian G Oliver
- School of Life Sciences, University of Technology Sydney, Sydney, NSW, 2007, Australia; Woolcock Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia
| | - Kamal Dua
- Faculty of Health, Australian Research Centre in Complementary and Integrative Medicine, University of Technology Sydney, Ultimo, Australia; Woolcock Institute of Medical Research, University of Sydney, Sydney, New South Wales, Australia; Discipline of Pharmacy, Graduate School of Health, University of Technology Sydney, Ultimo 2007, NSW, Australia.
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Lazinski LM, Royal G, Robin M, Maresca M, Haudecoeur R. Bioactive Aurones, Indanones, and Other Hemiindigoid Scaffolds: Medicinal Chemistry and Photopharmacology Perspectives. J Med Chem 2022; 65:12594-12625. [PMID: 36126323 DOI: 10.1021/acs.jmedchem.2c01150] [Citation(s) in RCA: 16] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
Hemiindigoids comprise a range of natural and synthetic scaffolds that share the same aromatic hydrocarbon backbone as well as promising biological and optical properties. The encouraging therapeutic potential of these scaffolds has been unraveled by many studies over the past years and uncovered representants with inspiring pharmacophoric features such as the acetylcholinesterase inhibitor donezepil and the tubulin polymerization inhibitor indanocine. In this review, we summarize the last advances in the medicinal potential of hemiindigoids, with a special attention to molecular design, structure-activity relationship, ligand-target interactions, and mechanistic explanations covering their effects. As their strong fluorogenic potential and photoswitch behavior recently started to be highlighted and explored in biology, giving rise to the development of novel fluorescent probes and photopharmacological agents, we also discuss these properties in a medicinal chemistry perspective.
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Affiliation(s)
- Leticia M Lazinski
- Université Grenoble Alpes, CNRS 5063, DPM, 38000 Grenoble, France.,Université Grenoble Alpes, CNRS 5250, DCM, 38000 Grenoble, France
| | - Guy Royal
- Université Grenoble Alpes, CNRS 5250, DCM, 38000 Grenoble, France
| | - Maxime Robin
- Mediterranean Institute of Marine and Terrestrial Biodiversity and Ecology (IMBE), Aix Marseille Université, 27 Boulevard Jean Moulin, 13385 Marseille, France
| | - Marc Maresca
- Aix Marseille Université, CNRS, Centrale Marseille, iSm2, 13397 Marseille, France
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Boggu PR, Kim Y, Jung SH. Discovery of benzimidazole analogs as a novel interleukin-5 inhibitors. Eur J Med Chem 2019; 181:111574. [PMID: 31400705 DOI: 10.1016/j.ejmech.2019.111574] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/03/2019] [Revised: 07/19/2019] [Accepted: 07/29/2019] [Indexed: 11/30/2022]
Abstract
A series of novel hydroxyethylaminomethylbenzimidazole analogs 5a-y were synthesized and evaluated for their IL-5 inhibitory activity using pro-B Y16 cell line. Among them, 2-(((4-(cyclohexylmethoxy)-1H-benzo[d]imidazol-2-yl)methyl)amino)butan-1-ol (5e, 94.3% inhibition at 30 μM, IC50 = 3.5 μM, cLogP = 4.132) and 3-cyclohexyl-2-(((4-(cyclohexylmethoxy)-1H-benzo[d]imidazol-2-yl)methyl)amino) propan-1-ol (5k, 94.7% inhibition at 30 μM, IC50 = 5.0 μM, cLogP = 6.253) showed the most potent inhibitory activity. The essential feature of SAR (Fig. 5) indicated that the chromenone ring can be replaced by a benzimidazole ring to maintain the inhibitory activity. In addition, the hydroxyethylaminomethyl group was suitable for the IL-5 inhibitory activity. Moreover, the hydrophobic substituents on carbon play an important role in the IL-5 inhibitory activity of these analogs. However, N-substituted analogs did not improve inhibitory activity. In addition, MTT assay of 5e and 5k with normal B lymphoblasts revealed that they had no significant effects on cell viability.
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Affiliation(s)
- Pulla Reddy Boggu
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon, 34134, Republic of Korea; School of Pharmacy, Sungkyunkwan University, Suwon, Gyeonggi-do, 16419, Republic of Korea
| | - Youngsoo Kim
- College of Pharmacy, Chungbuk National University, Cheongju, 19421, Republic of Korea
| | - Sang-Hun Jung
- College of Pharmacy and Institute of Drug Research and Development, Chungnam National University, Daejeon, 34134, Republic of Korea.
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