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Two new methoxylated flavonoids, setidenosides A (1) and B (2), together with three known constituents, linarin (3), 5-O-E-p-coumarolyquinic acid methyl ester (4), and syringin (5), were isolated from a methanol extract of the aerial parts of Cirsium setidens Nakai (Asteraceae) through bioassay-guided fractionation using advanced glycation end products (AGEs) formation assay. The structures of the...
Bioassay-guided isolation of an ethanolic extract of the aerial parts from Ainsliaea acerifolia using pancreatic lipase inhibitory assay led to the isolation of a new guaianolide-type sesquiterpene lactone (1), a new dicaffeoylquinic acid derivative (4), as well as eight known secondary metabolites. Structures of the two new compounds were elucidated on the basis of spectroscopic methods. All isolated...
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