the essential oil of the liverwort Saccogyna viticulosa, collected on the island of Madeira, the new sesquiterpene hydrocarbons isogermacrene A (5) and its Cope rearrangement product iso-beta-elemene (6) were identified. 5 is proposed to act as the biogenetic precursor of several new sesquiterpenes identified in the volatiles of S. viticulosa. These include iso-alpha-humulene, alpha-gorgonene, gorgona-1
                                    在马德拉岛收集的地衣草精油中,鉴定出新的
倍半萜烃异
锗烯 A (5) 及其 Cope 重排产物异
β-榄香烯 (6)。5 被提议作为在 S. viticulosa 挥发物中鉴定出的几种新
倍半萜的
生物遗传前体。这些包括异-α-葎草烯、α-gorgonene、gorgona-1,4(15)、11-triene 和 gorgon-11-en-4-ol。此外,齐埃烯、异齐烯、异
芳烃-4(15),10(14)-二烯、
芳香烃-4(15),10(14)-二烯-1-醇和
异戊二烯二萜醇的Cope产物,命名为葡萄醇,被鉴定为新的
天然产物。