badrakemonin, a new eremophilane-type sesquiterpene from the roots of ferula badrakema kos.-pol.

phytochemical investigation of the dichloromethane extract of the dried roots of ferula badrakema resulted in the identification of one new and six known compounds. known compounds were sesquiterpene coumarins: mogoltacin, feselol, badrakemin acetate, ferocaulidin, conferone and conferol acetate. the new compound was a sesquiterpene, named badrakemonin. the structures of these compounds were elucidated by extensive nmr spectroscopic methods including 1d-(1h and 13c) and 2d-nmr (hsqc, hmbc, and roesy) as well as ms experiments.