Marinopyrones A–D, α-pyrones from marine-derived actinomycetes of the family Nocardiopsaceae
作者:Jihye Lee、Chulkyeong Han、Tae Gu Lee、Jungwook Chin、Hyukjae Choi、Wonjae Lee、Man Jeong Paik、Dong Hwan Won、Gyusang Jeong、Jaeyoung Ko、Yeo Joon Yoon、Sang-Jip Nam、William Fenical、Heonjoong Kang
DOI:10.1016/j.tetlet.2016.03.084
日期:2016.5
Two actinomycetes, a member of the rare halophilic genus Streptomonospora and a Nocardiopsis sp. (Nocardiopsaceae), strains CNQ-082 and CNQ-675, respectively, were isolated from marine sediments collected off shore near La Jolla, California. HPLC-UV guided fractionations of the extracts of these strains yielded marinopyrones A–D (1–4), the structures of which were elucidated by interpretation of 1D
两个放线菌,一种罕见的嗜盐链球菌属的成员和一个诺卡氏菌。(Nocardiopsaceae),菌株CNQ-082和CNQ-675,分别从加利福尼亚州拉霍亚附近海岸收集的海洋沉积物中分离出来。这些菌株的提取物的HPLC-UV被引导分馏得到marinopyrones A-d(1 - 4),通过1D和2D NMR和HRMS光谱数据的解释阐明了其结构。氧化臭氧氧化,然后将酸产物转化为α-萘酰胺,在侧链的手性中心提供了绝对构型。检查了Marinopyrones A–D对LPS激活的小鼠巨噬细胞中一氧化氮产生的抑制作用(RAW 264.7);marinopyrone D(4)具有抑制作用,IC 50值为13μM 。据我们所知,Marinopyrones A–C只是罕见的嗜盐链球菌Streptomonospora属的第二种天然产物。