1. Part 2 in the series “Naturally Occurring Sesquiterpene-Coumarin Ethers”.
2. Part 1:Greger H.,Hofer O.,Nikiforov A., J. Nat. Prod., in press.
3. Bohlmann F., Schumann D., Zdero C., Chem. Ber.107, 644 (1974).
4. w 1/2=9 Hz is characteristic for H eq (OR ax,R=H orAc),w 1/2=17–19 Hz for H ax (OR eq) (see Ref.2).
5. Pinar M., Rodriguez B., Phytochemistry16, 1987 (1977).