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Anti-COVID-19 and antidiabetic activities of new oleanane and ursane-type triterpenoids from Salvia grossheimii: an in-silico approach
Shiraz Univ Med Sci, Med & Nat Prod Chem Res Ctr, Shiraz, Iran..ORCID iD: 0000-0003-4636-454X
Shiraz Univ Med Sci, Med & Nat Prod Chem Res Ctr, Shiraz, Iran..ORCID iD: 0000-0002-7443-8078
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Pharmacy, Department of Medicinal Chemistry, Farmakognosi. Jiangsu Univ, Int Res Ctr Food Nutr & Safety, Zhenjiang, Jiangsu, Peoples R China.;Jiangsu Univ, Jiangsu Educ Dept, Int Joint Res Lab Intelligent Agr & Agriprod Proc, Zhenjiang, Jiangsu, Peoples R China..ORCID iD: 0000-0002-2519-6690
Shiraz Univ Med Sci, Med & Nat Prod Chem Res Ctr, Shiraz, Iran..ORCID iD: 0000-0003-3918-361X
2022 (English)In: Journal of Receptor and Signal Transduction Research, ISSN 1079-9893, E-ISSN 1532-4281, Vol. 42, no 6, p. 540-548Article in journal (Refereed) Published
Abstract [en]

Salvia grossheimii is a perennial herb with antidiabetic and cytotoxic constituents. In continuation of our study on S. grosshiemii to identify the bioactive phytochemicals, we have reported the characterization of seven undescribed triterpenoids. The aerial parts of the plant were extracted in dichloromethane and its constituents were isolated using chromatography techniques. The structures of compounds were identified using 1D, 2D NMR, and ESI-MS spectral data. Seven new oleanane- and ursane-type triterpenoids (1-7) were identified in S. grossheimii. The structures of 1-7 were characterized as; 2 alpha-hydroxy-3 beta-acetoxy-olean-9(11),12-diene (1), 2 alpha-acetoxy-3 beta-hydroxy-olean-9(11),12-diene (2), 3 beta-acetoxy-olean-18-ene,2 alpha,11 alpha-diol (3), 2 alpha-hydroxy-3 beta-acetoxy-urs-9(11),12-diene (4), 2 alpha-acetoxy-3 beta-hydroxy-urs-9(11),12-diene (5), 2 alpha,3 beta-diacetoxy-urs-12-ene-11 alpha,20 beta-diol (6), 2 alpha,3 beta-diacetoxy-urs-9(11),12-diene-20 beta-ol (7). Triterpenoids (2, 5, and 7) were intramolecular transesterification or dehydration products of their corresponding isomers or allylic alcohol in the C rings, respectively, produced in-situ during NMR spectroscopy. Virtual screening of 1-7 was performed with molecular docking analysis to identify the potential SARS-CoV-2 and alpha-glucosidase inhibitors using the smina molecular docking algorithm. The best binding energy values (kcal/mol) against COVID-19 main protease M-pro were calculated for 6 (-8.77) and 7 (-8.68), and the higher binding affinities toward human alpha-glucosidase were obtained for 2 (-9.39) and 6 (-8.63). This study suggests S. grossheimii as a rich source of bioactive triterpenoids and introduces new natural compounds. Considering the high binding energy values of 2, 6, and 7, these structures could be candidates for anti-COVID-19 and antidiabetic drug development in the future.

Place, publisher, year, edition, pages
Taylor & Francis Group, 2022. Vol. 42, no 6, p. 540-548
Keywords [en]
Salvia grossheimii, polyhydroxylated triterpenoids, oleanane and ursane, antidiabetic, anti-COVID-19, molecular docking
National Category
Organic Chemistry
Identifiers
URN: urn:nbn:se:uu:diva-497008DOI: 10.1080/10799893.2022.2072891ISI: 000793921400001PubMedID: 35544359OAI: oai:DiVA.org:uu-497008DiVA, id: diva2:1739201
Available from: 2023-02-24 Created: 2023-02-24 Last updated: 2023-02-24Bibliographically approved

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El-Seedi, Hesham R.

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