Jm. David et al., THE CHEMISTRY OF BRAZILIAN LAURACEAE .102. PHENYLPROPANOID-CATECHINS FROM BARK OF OCOTEA-POROSA, Phytochemistry, 35(2), 1994, pp. 545-546
In the bark of Ocotea porosa neolignans are accompanied by the sesquit
erpenoid (+)-oplopanone, the flavonoid (-)-epicatechin and two novel c
ompounds, the 4 beta- and 4 alpha-forms of -(7,8-bc)-4-(hydroxyphenyl)
dihydro-2(3H)-pyranone.