Eremophilane sesquiterpenoids from the endophytic fungus Curvularia lunata BCC76963
作者:Karoon Sadorn、Siriporn Saepua、Nattawut Boonyuen、Patchanee Auncharoen、Pranee Rachtawee、Pattama Pittayakhajonwut
DOI:10.1016/j.tet.2023.133297
日期:2023.3
mycelia extracts of the endophytic fungus Curvularia lunata BCC76963 led to the isolation of five new eremophilane sesquiterpenoids, curvuleremophilanes A−D (1–4) and septeremophilane I (5), one new conjugated unsaturated fatty acid, (6S,2E,4E)-8-hydroxy-4,6-dimethylocta-2,4-dienoic acid (6), and one new phenylacetic acid derivative, 4′-chlorocurvulin (8), along with ten known compounds. The chemical
对内生真菌Curvularia lunata BCC76963 的肉汤和菌丝体提取物的化学研究导致分离出五种新的 eremophilane 倍半萜类化合物,curvuleremophilanes A−D ( 1 – 4 ) 和 septeremophilanes I ( 5 ),一种新的共轭不饱和脂肪酸, (6 S ,2 E ,4 E )-8-hydroxy-4,6-dimethylocta-2,4-dienoic acid ( 6 ) 和一种新的苯乙酸衍生物 4'-chlorocurvulin ( 8),以及十种已知化合物。基于 HRESIMS 和 NMR 光谱数据的分析阐明了化学结构。eremophilanes 的绝对构型是根据 NOESY 相关性、化学转化率、旋光值和 ECD 光谱数据以及生物遗传因素的证据指定的。此外,化合物5的绝对立体化学由X射线晶体学证实。Curvuleremophilane