Studies of Australian Soft Corals. XV. The Structure of Pachyclavulariadiol, a Novel Furano-Diterpene from Pachyclavularia violacea

Abstract

.Pachyclavulariadiol (3) and its naturally occurring mono-(4) and di-acetylated (5) derivatives have been isolated from the soft coral Pachyclavularia violacea. Their structures were deduced spectroscopically and confirmed by a single-crystal X-ray diffraction study on the diol(3). Each compound is shown to be a highly functionalized cembranoid diterpene with the isopropyl group elaborated as a furan ring.