Thonningianins A and B, New Antioxidants from the African Medicinal Herb Thonningia sanguinea

Thonningianins A and B, New Antioxidants from the African Medicinal Herb<i> Thonningia </i><i>s</i><i>anguinea</i> Antioxidant Xanthones from <i>Garcinia vieillardii</i> 8-Methoxyneorautenol and radical scavenging flavonoids from Erythrina abyssinica Dihydrochalcone Glucosides from the Subaerial Parts of <i>Thonningia sanguinea</i> and Their in Vitro PTP1B Inhibitory Activities Antioxidant Lignans from the Fruits of <i>Broussonetia papyrifera</i> Radical Scavenging and Antioxidant Activities of Isocoumarins and a Phthalide from the Endophytic Fungus <i>Colletotrichum</i> sp. Antioxidant Principles from <i>Bauhinia </i><i>t</i><i>arapotensis</i> Dihydrostilbene Derivatives from the Mongolian Medicinal Plant <i>Scorzonera radiata</i> Thiotagetin B and tagetannins A and B, new acetylenic thiophene and digalloyl glucose derivatives from Tagetes minuta and evaluation of their in vitro antioxidative and anti-inflammatory activity Piliostigmin, a 2-phenoxychromone, and C-methylflavonols from Piliostigma thonningii