From the twigs of Myrica cerifera L. (Myricaceae), a new oleanane triterpen
ic acid named myrica acid was isolated along with myricalactone and several
other known constituents. The structure of the acid was determined as 3 be
ta-hydroxy-1-oxoolean-11,13(18)-dien-28-oic acid on the basis of chemical a
nd spectral evidence.