Sabry Omar M, Goeger Douglas E, Gerwick William H
a College of Pharmacy , Oregon State University , Corvallis , OR , USA.
b Faculty of Pharmacy , Cairo University , Cairo , Egypt.
Nat Prod Res. 2017 Mar;31(5):555-561. doi: 10.1080/14786419.2016.1207074. Epub 2016 Jul 18.
A bioassay-guided investigation (cancer cell cytotoxicity) of a Moorea producens collection from Key West, Florida, led to the discovery of two new bioactive natural products [(+)-malyngamide Y and a cyclic depsipeptide, (+)-floridamide]. Their planar structures were deduced through extensive analysis of 1D and 2D NMR spectroscopic data and supported by HRFAB mass spectrometry. The new cyclic depsipeptide contains four amino acids units, including N-methyl phenylalanine, proline, valine and alanine, beside the unique unit, 2,2-dimethyl-3-hydroxy-octanoic acid. In addition to the discovery of these two new compounds, two previously reported metabolites were also isolated and identified from this cyanobacterial collection; (-)-C-12 lyngbic acid and the antibacterial agent (-)-malyngolide.
对采自佛罗里达州基韦斯特的一种摩雷阿岛原甲藻进行生物测定指导的研究(癌细胞细胞毒性),发现了两种新的生物活性天然产物[(+)-马琳酰胺Y和一种环缩肽,(+)-佛罗里达酰胺]。通过对一维和二维核磁共振光谱数据的广泛分析推导得出它们的平面结构,并得到高分辨快原子轰击质谱的支持。这种新的环缩肽除了独特的2,2-二甲基-3-羟基辛酸单元外,还含有四个氨基酸单元,包括N-甲基苯丙氨酸、脯氨酸、缬氨酸和丙氨酸。除了发现这两种新化合物外,还从该蓝藻样本中分离并鉴定出两种先前报道的代谢产物;(-)-C-12灵比酸和抗菌剂(-)-马琳内酯。