1
|
Schwikkard S, Alqahtani A, Knirsch W, Wetschnig W, Jaksevicius A, Opara EI, Langat MK, Andriantiana JL, Mulholland DA. Phytochemical Investigations of Three Rhodocodon (Hyacinthaceae Sensu APG II) Species. J Nat Prod 2017; 80:30-37. [PMID: 28051316 DOI: 10.1021/acs.jnatprod.6b00240] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/06/2023]
Abstract
The genus Rhodocodon (Hyacinthaceae sensu APG II) is endemic to Madagascar, and its phytochemistry has not been described previously. The phytochemistry of three species in this genus has been investigated, and eight compounds, including three bufadienolides (compounds 1, 4, and 5), a norlignan (2), and four homoisoflavonoids (compounds 3 and 6-8), have been isolated and identified. Compounds 1-3 and 6-8 have not been described previously. The COX-2 inhibitory activity of compound 6 and compound 7 acetate (compound 7A) was investigated on isolated colorectal cancer cells. Compounds 6 and 7A inhibited COX-2 by 10% and 8%, respectively, at a concentration of 12.5 μM compared to 12% for 1 mM aspirin (the positive control).
Collapse
Affiliation(s)
- Sianne Schwikkard
- Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey , Guildford, GU2 7XH, United Kingdom
- School of Life Sciences, Pharmacy and Chemistry, Faculty of Science, Engineering and Computing, Kingston University , Penrhyn Road, Kingston Upon Thames, KT1 2EE, United Kingdom
| | - Alaa Alqahtani
- Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey , Guildford, GU2 7XH, United Kingdom
| | - Walter Knirsch
- Institute of Plant Sciences, NAWI Graz, Karl-Franzens-University Graz , Holteigasse 6, A-8010, Graz, Austria
| | - Wolfgang Wetschnig
- Institute of Plant Sciences, NAWI Graz, Karl-Franzens-University Graz , Holteigasse 6, A-8010, Graz, Austria
| | - Andrius Jaksevicius
- School of Life Sciences, Pharmacy and Chemistry, Faculty of Science, Engineering and Computing, Kingston University , Penrhyn Road, Kingston Upon Thames, KT1 2EE, United Kingdom
| | - Elizabeth I Opara
- School of Life Sciences, Pharmacy and Chemistry, Faculty of Science, Engineering and Computing, Kingston University , Penrhyn Road, Kingston Upon Thames, KT1 2EE, United Kingdom
| | - Moses K Langat
- Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey , Guildford, GU2 7XH, United Kingdom
- School of Chemistry and Physics, University of KwaZulu-Natal , Durban, 4041, South Africa
| | - Jackie L Andriantiana
- Parc Botanique et Zoologique de Tsimbazaza , Rue Kasanga Fernand, Antananarivo 101, Madagascar
| | - Dulcie A Mulholland
- Natural Products Research Group, Department of Chemistry, Faculty of Engineering and Physical Sciences, University of Surrey , Guildford, GU2 7XH, United Kingdom
- School of Chemistry and Physics, University of KwaZulu-Natal , Durban, 4041, South Africa
| |
Collapse
|