Sesquiterpene Acid Derivatives from Tarchonanthus camphoratus.

Fractionation of n-Hexane-CH2Cl2 (1:1) extract of dried leaves of Tarchonanthus camphoratus afforded seven Sesquiterpene acids derivatives (3-8, 10) and diazomethane treatment afforded four 1-2a and 9. The structures of these compounds were determined by extensive 1D and 2D NMR analyses, We report here the isolation and characterization of unreported sesquiterpene compounds isolated for the first time from T.