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A new depside and a new secoiridoid from the aerial parts of Gentiana olivieri from flora of Turkey.
Nat Prod Res
; 36(9): 2208-2214, 2022 May.
Artigo
em Inglês
| MEDLINE
| ID: mdl-32975135
RESUMO
A new depside, olivieridepside (1), and a new secoiridoid, olivierigenin (2) were isolated from the aerial parts of Gentiana olivieri Griseb. along with four known compounds, gentiopicroside (3), olivierosides A (4) and B (5) and isoorientin (6). The structures of the isolates were determined by extensive 1 D and 2 D NMR spectroscopy and HR-MS analysis. This is the first report on the occurrence of a depside structure in the genus Gentiana. Moreover, a rare type of non-glycosidic secoiridoid (2) lacking an oxygenated group at C-1 is also being reported for the first time from this genus. The chemotaxonomic importance of the isolates was discussed in detail.