Halisphingosines A (1) and B (2), modified long-chain sphingoid bases, from the marine sponge Haliclona tubifera collected in Brazil, were characterized after conversion to their N-Boc derivatives. The 2R,3R,6R configuration of halisphingosine A, a compound first reported from Haliclona sp. from South Korea, was confirmed using a novel CD approach: deconvolution of exciton coupling from mono- and trinaphthoyl
Halisphingosines A ( 1 ) 和 B ( 2 ),修饰的长链
鞘氨醇碱基,来自巴西收集的海海绵Haliclona tubifera,在转化为它们的N- Boc 衍
生物后进行了表征。Haliclona 首次报道的化合物 halisphingosine A的 2 R ,3 R ,6 R构型sp. 来自韩国,使用一种新的 CD 方法得到证实:从
天然产物的衍生化获得的单和三
萘酰基衍
生物的激子耦合的去卷积。灵敏的 CD 解卷积方法适用于亚毫克样品,同时准确准确地预测了 halisphingosine A 中三个立体中心的相对和绝对构型。Halisphingosine B 通过与 halisphingosine A 的相关性进行分配。