| Abstract: | Summary 1. The following compounds have been isolated from the oleoresin ofPinus koraiensis Sieb. et Zucc., in addition to those described previously: cis-abienol, labd-8(20),13-dien-15-ol, (+)-manoyl oxide, epimanoyl oxide, and 7 -hydroxydehydroabietinol (in the form of the diacetate). The structure of the last-mentioned, previously unknown, diterpenoid has been shown by chemical transformations and by spectroscopy.2. It has been established that the cembrene, isocembrene, pinacenes, neoabienol isolated previously and the 18-norcembra-2,7,11-trien-4-one now isolated for the first time are secondary products formed in the storage and treatment of the oleoresin.Novosibirsk Institute of Organic Chemistry, Siberian Branch of the Academy of Sciences of the USSR. Translated from Khimiya Prirodnykh Soedinenii, No. 2, pp. 174–179. March–April, 1976. |
