abietatriene/larix

Two novel norditerpenediols, 18-nor-abieta-8,11,13-triene-4,15-diol (1) and 18-nor-abieta-8,11,13-triene-4,7alpha-diol (2), were isolated from the cones of Larix kaempferi, together with two known diterpenes, abieta-8,11,13-triene-15,18-diol and abieta-8,11,13-triene-7alpha,18-diol. The structures

The influence of larch (Larix decidua L.) sawdust extracts on arachidonate metabolism has been evaluated in vitro. Extracts of different polarities were tested for their ability to inhibit prostaglandin formation by COX-1 and COX-2 and LTB(4) formation by 5-LOX. The lipophilic n-heptane extract