Ectyoplasides A–B – Unique Triterpene Oligoglycosides from the Caribbean SpongeEctyoplasia ferox
作者:Francesco Cafieri、Ernesto Fattorusso、Orazio Taglialatela-Scafati
DOI:10.1002/(sici)1099-0690(199901)1999:1<231::aid-ejoc231>3.0.co;2-u
日期:1999.1
Two novel norlanostane triglycosides, ectyoplasides A (1) and B (2), have been isolated from the methanolic extracts of the Caribbean sponge Ectyoplasiaferox (Raspaliidae, Axinellida). Their structures have been established by extensive application of high-resolution FABMS and two-dimensional NMR techniques, supported by chemical and enzymatic degradation methods. Ectyoplasides A and B have been shown
从加勒比海绵 Ectyoplasiaferox(Raspaliidae,Axinellida)的甲醇提取物中分离出两种新型去甲羊毛脂烷三糖苷,ectyoplasides A (1) 和 B (2)。它们的结构是通过广泛应用高分辨率 FABMS 和二维核磁共振技术建立的,并得到化学和酶促降解方法的支持。Ectyoplasides A 和 B 已被证明具有相同的糖链(由两个 β-半乳糖单元和一个 α-阿拉伯糖单元组成),但它们的苷元部分不同,它们具有在环 A 上具有前所未有的取代模式的去甲三萜骨架。当对各种细胞系进行体外测试时,A 和 B 显示出中等的细胞毒活性