Sarcoglaucins A-I, new antifouling cembrane-type diterpenes from the South China Sea soft coral <i>Sarcophyton glaucum</i>

Abstract

Nine new cembrane diterpenes, named sarcoglaucins A-I (<bold>1–9</bold>) along with three known analogues, trochelioid (<bold>10</bold>), 7α-hydroxy-Δ⁸⁽¹⁹⁾-deepoxysarcophine (<bold>11</bold>), and (−)-sartrochine (<bold>12</bold>), were isolated from the soft coral <italic>Sarcophyton glaucum</italic> collected at Xisha Islands in the South China Sea.