Correction to: Two new xanthones from the roots of Cratoxylum cochinchinense and their cytotoxicity.

In the original publication of the article, figure 1 was published incorrectly. The correct version of figure 1 is provided below.

Two new xanthones from the roots of Cratoxylum cochinchinense and their cytotoxicity.

Two new xanthones namely cratochinone A (1) and cratochinone B (2), along with 16 known xanthones, were isolated from the roots of Cratoxylum cochinchinense. Their structures were characterized by spectroscopic methods, especially 1D and 2D NMR as well as comparison with those reported in the literature for known xanthones. All isolated compounds were evaluated for their cytotoxicity against five human cancer cell lines (KB, HeLa S-3, HT-29, MCF-7 and Hep G2 cell lines).