Three new sesquiterpenes, together with S-(+)-trans-neuolidoI, were is
olated from the essential oil of Lippia integrifolia. Their structures
were elucidated by nmr spectroscopy as 2 beta,4 beta,9 icyclo[6.3.0.0
(2,4)]undec-1(8)-ene-7,11-dione[1],1 beta,2 alpha,8 2,6,10,10-tetramet
hylbicyclo[6.3.0]undec-5-en-2-ol (3 alpha-hydroxy-6-asteriscene) [2],
and 1 alpha,7 beta,9 -3,6,6,9-tetramethylbicyclo[5.4.0]undec-3-en-8-on
e [3].