Pyrrole Derivatives and Diterpene Alkaloids from the South China Sea Sponge <i>Agelas nakamurai</i>
作者:Mei-Jun Chu、Xu-Li Tang、Guo-Fei Qin、Yan-Ting Sun、Lei Li、Nicole J. de Voogd、Ping-Lin Li、Guo-Qiang Li
DOI:10.1002/cbdv.201600446
日期:2017.7
non-brominated racematic pyrrole derivatives, (±)-nakamurine D (1) and (±)-nakamurine E (2), two new diterpene alkaloids, isoagelasine C (16) and isoagelasidine B (21), together with 13 known pyrrole derivatives ((±)-3 - 15), five known diterpene alkaloids (17 - 20, 22) were isolated from the South China Sea sponge Agelas nakamurai. The racemic mixtures, compounds 1 - 4, were resolved into four pairs
两对新的非溴化外消旋吡咯衍生物((±)-nakamurine D(1)和(±)-nakamurine E(2)),两种新的二萜生物碱,异agelasine C(16)和isoagelasidine B(21)从南海海绵Akalas nakamurai分离出13种已知的吡咯衍生物((±)-3-15),5种已知的二萜生物碱(17-20、22)。将外消旋混合物化合物1-4拆分为四对对映异构体(+)-1和(-)-1,(+)-2和(-)-2,(+)-3和(-) -3,和(+)-4和(-)-4,通过手性HPLC。在全面的光谱分析,量子化学计算,摩尔旋转的定量测量,van't Hoff光学叠加原理的应用以及与文献数据的比较的基础上,阐明了结构和绝对构型。化合物3的NMR和MS数据是首次报道,因为该结构在SciFinder Scholar中列出,没有相关参考。这些非溴代吡咯衍生物是首次在该物种中发现的。化