2.3.6. Xanthoquinodin B14 (**6**)

Yellow, amorphous solid; [α] 20 <sup>D</sup> + 508◦ (*c* 0.002, MeOH); UV (MeOH) λmax (log ε) 199 (4.5), 275 (4.0), 361 (4.1); CD (*<sup>c</sup>* 1.6 <sup>×</sup> <sup>10</sup>–3 M, MeOH) <sup>λ</sup>max (Δε) 233 (–12.96), 264 (+8.84), 323 (+26.05); 1H-NMR and 13C-NMR see Table 2; ESI-MS: *m*/*z* 643.20 (M <sup>−</sup> H)<sup>−</sup> and 645.24 (M + H)+; HRESIMS *m*/*z* 645.1967 (M + H)<sup>+</sup> (calculated for C35H33O12, 645.1967).
