California Lomatiums, Part IV: Composition of the essential oils of Lomatium rigidum (M.E. Jones) Jepson. Structures of two new funebrene epimers and a tridecatriene

Oils produced from the fruits, steins and leaves and roots of Lontatium, rigidum, were subjected to analysis by GC, GC/MS and other spectroscopic techniques. The oils of fruits as well as the stems and leaves of L.rigidum, were found to contain beta-phellandrene/limonene (9.1-25.7%), delta-cadinene (7.5-12.9%), alpha-cadmol (16.4-18.6%), epi-alpha-cadinol and epi-alpha-muurolol (8.2-9.0%) as major components. The root oils were found to be rich in (Z)-falcarinol (10.8-14.9%), 2-epi-beta-funebrene (48.2%), a new funebrene epimer, as well as the new (Z,Z,Z)-3,6,9-tridecatriene.