Four new coumarin derivatives from Artemisia keiskeana.

  title={Four new coumarin derivatives from Artemisia keiskeana.},
  author={Jong Hwan Kwak and Kang Bong Lee and Francis J. Schmitz},
  journal={Journal of natural products},
  volume={64 8},
Four new coumarin monoterpene ethers, artekeiskeanols A-D (1-4), and three known coumarins, isofraxidin, fraxidin, and daphnoretin, were isolated from the whole plants of Artemisia keiskeana. All structures were determined from spectral data, and that of artekeiskeanol A (1) was confirmed by synthesis.