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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.

A new depside and a new secoiridoid from the aerial parts of Gentiana olivieri from flora of Turkey