1
|
Saidu MB, Kúsz N, Berkecz R, Rácz B, Spengler G, Hohmann J, Rédei D. Ingol, ent-atisane, and stachane-type diterpenoids from Euphorbia deightonii with multidrug resistance reversing activity. Phytochemistry 2022; 204:113344. [PMID: 35952771 DOI: 10.1016/j.phytochem.2022.113344] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/06/2022] [Revised: 07/11/2022] [Accepted: 07/21/2022] [Indexed: 06/15/2023]
Abstract
Nine previously undescribed ingol-type diterpenoid polyesters with eighteen known ingol esters, two ent-atisane, and one stachane diterpenoid were isolated from the methanol extract of Euphorbia deightonii Croizat. The structures were established by extensive spectroscopic analysis involving 1D (1H, 13C J-modulation) and 2D NMR experiments, HRESIMS measurements, and the comparison of the spectroscopic data with reported literature values. The cytotoxic concentrations of 13 isolated compounds were determined, and the compounds were investigated for multidrug resistance modulating activity on an L5178 mouse lymphoma cell line using a rhodamin 123 accumulation assay. Six ingol esters demonstrated the significant inhibition of P-glycoprotein, while the two ent-atisane diterpenoids were found to be inactive. The measured activities allowed to establish some structure-activity relationships. Notably, lower and higher-type diterpenoids simultaneously occurred in E. deightonii.
Collapse
Affiliation(s)
- Muhammad Bello Saidu
- Department of Pharmacognosy, University of Szeged, 6720, Szeged, Eötvös u. 6., Hungary.
| | - Norbert Kúsz
- Department of Pharmacognosy, University of Szeged, 6720, Szeged, Eötvös u. 6., Hungary.
| | - Róbert Berkecz
- Institute of Pharmaceutical Analysis, University of Szeged, 6720, Szeged, Somogyi u. 4., Hungary.
| | - Bálint Rácz
- Department of Medical Microbiology, Albert Szent-Györgyi Medical School, University of Szeged, 6725, Szeged, Dóm Tér 10., Hungary.
| | - Gabriella Spengler
- Department of Medical Microbiology, Albert Szent-Györgyi Medical School, University of Szeged, 6725, Szeged, Dóm Tér 10., Hungary.
| | - Judit Hohmann
- Department of Pharmacognosy, University of Szeged, 6720, Szeged, Eötvös u. 6., Hungary; Interdisciplinary Centre of Natural Products, University of Szeged, 6720, Szeged, Eötvös u. 6., Hungary.
| | - Dóra Rédei
- Department of Pharmacognosy, University of Szeged, 6720, Szeged, Eötvös u. 6., Hungary.
| |
Collapse
|