School of Biology, Aquatic Chemical Ecology Center, Institute of Bioengineering and Biosciences, Georgia Institute of Technology, Atlanta, Georgia 30332, USA.
J Org Chem. 2012 Sep 21;77(18):8000-6. doi: 10.1021/jo301246x. Epub 2012 Sep 5.
Bioassay-guided fractionation of extracts from a Fijian red alga in the genus Callophycus resulted in the isolation of five new compounds of the diterpene-benzoate class. Bromophycoic acids A-E (1-5) were characterized by NMR and mass spectroscopic analyses and represent two novel carbon skeletons, one with an unusual proposed biosynthesis. These compounds display a range of activities against human tumor cell lines, malarial parasites, and bacterial pathogens including low micromolar suppression of MRSA and VREF.
从斐济红藻 Callophycus 属中提取的生物测定指导分离,得到了五个新的二萜-苯甲酸酯类化合物。溴藻酸 A-E(1-5)通过 NMR 和质谱分析进行了表征,代表了两种新型的碳骨架,其中一种具有不寻常的提议生物合成。这些化合物对人类肿瘤细胞系、疟原虫寄生虫和包括耐甲氧西林金黄色葡萄球菌(MRSA)和万古霉素耐药肠球菌(VREF)在内的细菌病原体显示出一系列的活性,抑制活性低至微摩尔水平。