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. Author manuscript; available in PMC: 2016 Mar 9.
Published in final edited form as: J Nat Prod. 2014 Mar 11;77(4):902–909. doi: 10.1021/np4009706

Figure 1.

Figure 1

UPLC-MS-ELSD-PDA analysis of lead 78821-c4 (obtained from the leaves of Eriodictyon angustifolia). a: ELSD chromatogram showing compounds 1 – 3 with retention times of 0.89, 0.91, and 1.02 min, respectively; b: PDA chromatogram showing retention times of 0.85, 0.87, and 0.98 min, respectively; c and d: positive and negative ESIMS total-ion chromatograms (TIC), respectively; e-g: negative ESIMS of compounds 1 – 3 with retention times of 0.85, 0.89, and 0.98 min, respectively; and h-j: UV spectra of compounds 1 – 3. UPLC conditions: Acquity UPLC BEH C18 column (2.1 × 50 mm, 1.7 μm); gradient elution starting at 15%, ramping to 20% in 0.2 min, then to 95% CH3CN in water with 0.1% HCOOH in 2.65 min at a flow rate of 1.0 mL/min.