The structure and stereochemistry of the diterpenes and the glycoalkaloid from solanum nigrum

Abstract

The diterpenoids are fairly widely distributed in nature. The best known members are the resin acids obtained from the non-volatile portion of many oleoresins, especially those obtained fram conifers. Diteppenoid acids, alcohols, lactones, phenols, and alkaloids have been obtained from a variety of sources. The hydrocarbons are more restricted in occurrence; all are found in New Zealand and all but two (camphorene and cupressene) in endemic species. Their reported occurrences are almost solely limited to countries bordering on the Pacific.