title: [Isolation, Purification and Identification of Antialgal Activity Substances of Ethyl Acetate Extracts from the Submerged Macrophytes Potamogeton crispus].
abstract: Previous studies showed that ethyl acetate extracts from the submerged macrophytes Potamogeton crispus can significantly inhibit the growth of Karenia mikimitoi. Further, two antialgal activity compounds (1-2) were successfully isolated from this submerged macrophytes through a combination of silica gel column chromagraphy and repeated preparative thin-layer chromatography in this paper. These two antialgal activity compounds exhibited antialgal active against Karenia mikimitoi. Furthermore, their structure were identified on the basis of spectroscopic data: one flavonid named Trichodermatides B, and one alkaloid named 2-methylheptylisonicotinate. These two compounds were for the first time isolated from both Potamogeton crispus and submerged macrophytes.
authors: Ying-ying
authors: YY
authors: Sun
authors: Zhen-xia
authors: ZX
authors: Su
authors: Yin-fang
authors: YF
authors: Pu
authors: Hui
authors: H
authors: Xiao
authors: Chang-hai
authors: CH
authors: Wang
mesh_terms: D000085:Acetates; D004141:Dinoflagellida / Q000187:drug effects*; D057097:Harmful Algal Bloom; D010936:Plant Extracts / Q000737:chemistry*; D031821:Potamogetonaceae / Q000737:chemistry*
chemical_list: D000085:Acetates; D010936:Plant Extracts; C007650:ethyl acetate