Phenylpropanoid derivatives and biflavones at different stages of differentiation and development of Araucaria angustifolia

Chemical investigations carried out with tissues at different developmental stages of Araucaria angustifolia established the presence of E and Z isome rs of octadecyl p-coumarate and octadecyl ferulate in undifferentiated call us; in the seedling stems, the source of explants, three biflavones of the amentoflavone-type were isolated, whereas the diterpene, trans-communic aci d, was obtained from the seedling roots. Adult stems accumulated the benzal dehydes, vanillin, p-hydroxybenzaldehyde and coniferaldehyde; the lignans, pinoresinol, eudesmin and lariciresinol; and the isoflavones, cabreuvine an d irisolidone. (C) 2000 Elsevier Science Ltd. All rights reserved.