Further acidic constituents and neutral components of pinus massoniana Resin

Article abstract of DOI:10.1016/S0040-4020(01)88015-7

The resin of Pinus massoniana Lamb. contains, in addition to those isolated in an earlier study, two new diterpene acids, viz. 15-hydroxy-7,13-abietadien-12-on-18-oic acid and 8(14)-podocarpen-7,13-dion-18-oic acid, and three new plant products, viz. 2β-hydroxy-8,11,13-abietatrien-18-oic acid, 7,13,15-abietatrien-18-oic acid, and 13-hdyroxy-8,11,13-podocarpatrien-18-oic acid. The above acids and four others from the resin were isolated as the p-nitrophenyl esters, and the structures of these were established from spectroscopic evidence. Also isolated were three neutral di- and sesquiterpenes.