3-Isomangostin hydrate

3-Isomangostin hydrate (Compound 17) is an xanthone that can be isolated from Cratoxylum formosum ssp. pruniflorum and exhibits antibacterial activity[1][2].

[1] Boonnak N, et al. Bioactive prenylated xanthones and anthraquinones from Cratoxylum formosum ssp. pruniflorum[J]. Tetrahedron, 2006, 62(37): 8850-8859.
[2] Ren Y, et al. Cytotoxic and NF-κB inhibitory constituents of the stems of Cratoxylum cochinchinense and their semisynthetic analogues. J Nat Prod. 2011 May 27;74(5):1117-25. DOI:10.1021/np200051j