New derivatives of (?)-neocembrene from the soft coral Sarcophyton trocheliophorum

A hexane extract of the soft coralSarcophyton trocheliophorum has yielded two new diterpenoids for which the structures of 13S-hydroxy-(–)-neocembrene and 13S-hydroxy-11,12-epoxy-(–)-neocembrene have been established.Novosibirsk Institute of Organic Chemistry, Siberian Branch, Academy of Sciences of the USSR. Pacific Ocean Institute of Bioorganic Chemistry, Far Eastern Branch, Academy of Sciences of the USSR, Vladivostok. Translated from Khimiya Prirodnykh Soedinenii, No. 4, pp. 535–540, July–August, 1988.