Artekeiskeanin A: a new coumarin-monoterpene ether from Artemisia keiskeana

A new coumarin-monoterpene ether, artekeiskeanin A (1) and two known coumarins, dracunculin (2) and scopoletin (3) were isolated from the aerial parts of Artemisia keiskeana. The structure of 1 was determined to be 7-(trans-8-oxogeranyloxy)-6-methoxycoumarin on the basis of spectroscopic studies.