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Kalenga T, Mollel JT, Said J, Orthaber A, Ward JS, Atilaw Y, Umereweneza D, Ndoile MM, Munissi JJE, Rissanen K, Trybala E, Bergström T, Nyandoro SS, Erdelyi M. Modified ent-Abietane Diterpenoids from the Leaves of Suregada zanzibariensis. J Nat Prod 2022; 85:2135-2141. [PMID: 36075014 PMCID: PMC9513791 DOI: 10.1021/acs.jnatprod.2c00147] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 02/11/2022] [Indexed: 06/15/2023]
Abstract
The leaf extract of Suregada zanzibariensis gave two new modified ent-abietane diterpenoids, zanzibariolides A (1) and B (2), and two known triterpenoids, simiarenol (3) and β-amyrin (4). The structures of the isolated compounds were elucidated based on NMR and MS data analysis. Single-crystal X-ray diffraction was used to establish the absolute configurations of compounds 1 and 2. The crude leaf extract inhibited the infectivity of herpes simplex virus 2 (HSV-2, IC50 11.5 μg/mL) and showed toxicity on African green monkey kidney (GMK AH1) cells at CC50 52 μg/mL. The isolated compounds 1-3 showed no anti-HSV-2 activity and exhibited insignificant toxicity against GMK AH1 cells at ≥100 μM.
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Affiliation(s)
- Thobias
M. Kalenga
- Chemistry
Department, College of Natural and Applied Sciences, University of Dar es Salaam, P.O. Box 35061, Dar es Salaam, Tanzania
- Department
of Chemistry, College of Education, Mwalimu
Julius K. Nyerere University of Agriculture and Technology, P.O. Box 976, Butiama, Tanzania
| | - Jackson T. Mollel
- Institute
of Traditional Medicine, Muhimbili University
of Health and Allied Sciences, P.O. Box 65001, Dar es Salaam, Tanzania
- Department
of Infectious Diseases/Virology, Institute of Biomedicine, Sahlgrenska
Academy, University of Gothenburg, S-413 46 Gothenburg, Sweden
| | - Joanna Said
- Department
of Infectious Diseases/Virology, Institute of Biomedicine, Sahlgrenska
Academy, University of Gothenburg, S-413 46 Gothenburg, Sweden
| | - Andreas Orthaber
- Department
of Chemistry − Ångström, Uppsala University, SE-751 20 Uppsala, Sweden
| | - Jas S. Ward
- University
of Jyvaskyla, Department of Chemistry, 40014 Jyväskylä, Finland
| | - Yoseph Atilaw
- Department
of Chemistry − BMC, Uppsala University, SE-751 23 Uppsala, Sweden
| | - Daniel Umereweneza
- Department
of Chemistry − BMC, Uppsala University, SE-751 23 Uppsala, Sweden
- Department
of Chemistry, College of Science and Technology, University of Rwanda, P.O Box 3900, Kigali, Rwanda
| | - Monica M. Ndoile
- Chemistry
Department, College of Natural and Applied Sciences, University of Dar es Salaam, P.O. Box 35061, Dar es Salaam, Tanzania
| | - Joan J. E. Munissi
- Chemistry
Department, College of Natural and Applied Sciences, University of Dar es Salaam, P.O. Box 35061, Dar es Salaam, Tanzania
| | - Kari Rissanen
- University
of Jyvaskyla, Department of Chemistry, 40014 Jyväskylä, Finland
| | - Edward Trybala
- Department
of Infectious Diseases/Virology, Institute of Biomedicine, Sahlgrenska
Academy, University of Gothenburg, S-413 46 Gothenburg, Sweden
| | - Tomas Bergström
- Department
of Infectious Diseases/Virology, Institute of Biomedicine, Sahlgrenska
Academy, University of Gothenburg, S-413 46 Gothenburg, Sweden
| | - Stephen S. Nyandoro
- Chemistry
Department, College of Natural and Applied Sciences, University of Dar es Salaam, P.O. Box 35061, Dar es Salaam, Tanzania
| | - Mate Erdelyi
- Department
of Chemistry − BMC, Uppsala University, SE-751 23 Uppsala, Sweden
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