MAJOR RESIN ACIDS OF PINUS NIGRA NEEDLES

Article abstract of DOI:10.1016/S0031-9422(00)81114-0

Key Word Index - Pinus nigra; Pinaceae; needles; labdane diterpenes; resin acids, 10-nonacosanol; isoabienol. - Labdane diterpene acids were found to be the major resin acid components in Pinus nigra needles of various seed sources.The major constituents have been identified as 4-epiimbricataloic acid, manoyl oxide 19-oic acid, 4-epicommunic acid, and 15-monomethyl pinifolate.A GC method was developed to analitically differentiate pinifolic acid from its monomethyl ester in an admixture of both compounds.A minor resin acid was identified as 18-acetoxy-8(17)-labden-15-oic acid. 10-nonacosanol and isoabienol were identified as major constituents of the needle and cortex extractives, respectively.