Center for Marine Biotechnology and Biomedicine, Scripps Institution of Oceanography, University of California San Diego , La Jolla, California 92093, United States.
J Nat Prod. 2013 Sep 27;76(9):1810-4. doi: 10.1021/np400347f. Epub 2013 Sep 17.
Two new marine cyanobacterial natural products, parguerene (1) and precarriebowmide (2), were isolated from a collection of Moorea producens obtained from La Parguera, Puerto Rico. The planar structures of both were deduced by 2D NMR spectroscopy and mass spectrometry. Parguerene is a modified acyl amide with some structural similarity to the bacterial metabolite stipiamide (3), whereas precarriebowmide is a lipopeptide and represents a minor modification compared to two other known metabolites, carriebowmide (4) and carriebowmide sulfone (5). The identification of 2 led to an investigation into whether carriebowmide and carriebowmide sulfone were true secondary metabolites or isolation artifacts.
parguerene(1)和 precarriebowmide(2)。通过二维 NMR 光谱和质谱推断出两者的平面结构。parguerene 是一种经过修饰的酰基酰胺,与细菌代谢产物 stipiamide(3)具有一定的结构相似性,而 precarriebowmide 是一种脂肽,与另外两种已知代谢物 carriebowmide(4)和 carriebowmide sulfone(5)相比,只是略有修饰。鉴定出 2 后,我们研究了 carriebowmide 和 carriebowmide sulfone 是否真的是次级代谢产物还是分离过程中的人为产物。