Structural Elucidation and Structure–Anti-inflammatory Activity Relationships of Cembranoids from Cultured Soft Corals <i>Sinularia sandensis</i> and <i>Sinularia flexibilis</i>
作者:Tsung-Chang Tsai、Hsueh-Yu Chen、Jyh-Horng Sheu、Michael Y. Chiang、Zhi-Hong Wen、Chang-Feng Dai、Jui-Hsin Su
DOI:10.1021/acs.jafc.5b01931
日期:2015.8.19
7-acetylsinumaximol B (2), diepoxycembrene B (6), dihydromanaarenolide I (8), and isosinulaflexiolide K (9), along with 11 known related metabolites, were isolated from cultured soft corals Sinularia sandensis and Sinularia flexibilis. The structures were elucidated by means of infrared, mass spectrometry, and nuclear magnetic resonance techniques, and the absolute configurations of 1, 4, 9, and 15
分离了新的类脑膜素4-碳甲氧基-10-吡咯烷醇二丁醚E(1),7-乙酰基磺氨乙莫酚B(2),二环氧乙酰胺B(6),二氢马那瑞诺利德I(8)和异氟脲内酯K(9),以及11种已知的相关代谢物。来自养殖的软珊瑚Sinularia sandensis和Sinularia flexibilis。结构通过红外,质谱和核磁共振技术,和的绝对构型来阐明1,4,9,和15通过单晶X射线衍射分析进一步证实。这些珊瑚代谢物的绝对构型以及与已知类似物的比较表明,一个假说(即从Alcyonacean软珊瑚获得的C1处具有异丙基绝对构型的西di二萜属于α系列,而从G实珊瑚中分离出的类似物则属于α系列。 β系列)不适用于少量的类mb骨。的体外使用LPS刺激的巨噬细胞样细胞系RAW 264.7抗炎研究表明,化合物9-14显着抑制了促炎蛋白iNOS和COX-2的积累。结构-活性关系分析表明,在C-1上具有一个七个七元内酯部