Absolute configuration of iminimycin B, a new indolizidine alkaloid, from Streptomyces griseus OS-3601
作者:Takuji Nakashima、Rei Miyano、Hirotaka Matsuo、Masato Iwatsuki、Tatsuya Shirahata、Yoshinori Kobayashi、Kazuro Shiomi、George A. Petersson、Yōko Takahashi、Satoshi Ōmura
DOI:10.1016/j.tetlet.2016.06.040
日期:2016.7
Iminimycin B, a novel indolizine alkaloid featuring a rare pyridinium, was isolated from the cultured broth of a streptomycin-producing strain, Streptomyces griseus OS-3601, through a physicochemical screening method. Its structure was elucidated on the basis of mass and NMR analyses. Stereochemical assignment of iminimycin B was archived by NMR studies, electronic circular dichroism (ECD) analysis
通过理化筛选方法,从产链霉素的菌株灰链霉菌OS-3601的培养液中分离出了以稀有吡啶鎓为特征的新型吲哚izine生物碱伊米霉素B。根据质量和NMR分析阐明了其结构。依米霉素B的立体化学分配通过NMR研究,电子圆二色性(ECD)分析和先进的Marfey方法存档。