Figure 2.
HPLC-chromatograms of isolated compounds recorded at λ = 240 nm. HPLC conditions: Zorbax SB-C18 (150 × 2.1 mm, 1.9 μm), mobile phase: A. 0.1% HCOOH/H2O; linear gradient 0–60 min, 5% to 60% B. 0.1% HCOOH/MeCN.
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