(+)-laurelliptinhexadecan-1-one (1a) and (+)-laurelliptinoctadecan-1-one (1b) from Cocculus orbiculatus (L.) DC. (Menispermaceae) have been confirmed by total synthesis of the racemic alkaloids. The key step of the synthesis involved formation of ring C of the aporphines by a radical-intiated cyclisation. Both (+/-)-laurelliptinhexadecan-1-one (1a) and (+/-)-laurelliptinoctadecan-1-one (1b) were inactive against
先前分配给来自 Cocculus orbiculatus (L.) DC 的 (+)-laurelliptinhexadecan-1-one (1a) 和 (+)-laurelliptinoctadecan-1-one (1b) 的结构。(Menispermaceae) 已通过外消旋
生物碱的全合成得到证实。合成的关键步骤涉及通过自由基引发的环化形成
阿朴啡的 C 环。(+/-)-laurelliptinhexadecan-1-one (1a) 和 (+/-)-laurelliptinoctadecan-1-one (1b) 对
金黄色葡萄球菌 A
TCC25932、大肠杆菌 A
TCC10536 和白色念珠菌 A
TCC90028 均无活性。