Figure 4
From: 2′-Epi-uscharin from the Latex of Calotropis gigantea with HIF-1 Inhibitory Activity
UHPLC−ESI−TOF−MS chromatograms and HRESIMS data of [M+HCOO]− ion of uscharin (A), 2′-epi-uscharin (B), the reaction mixture in mild acidic condition of 1% formic acid on day 3 (C) and the reaction mixture in mild alkaline condition of 1% ammonium hydroxide on day 7 (D).
