Studies of Australian soft corals. XXII. The structures of two novel sesquiterpenes and a nor sesquiterpene from Lemnalia africana, confirmed by a single-crystal X-ray study

Abstract

The isolation of two new sesquiterpenes (3) and (8) and a novel nor sesquiterpene (16) from Lemnalia africana is reported. In each case, the absolute stereochemistry was deduced chemically and spectroscopically, and confirmed by a single-crystal X-ray study on a suitable derivative (7).