The Hg(II) atom in the title complex, [HgI(2)(C(12)H(6)N(2)O(2))], is tetra-hedrally coordinated by the N atoms of the chelating 1,10-phenanthroline-5,6-dione ligand and two I atoms. The range of tetra-hedral angles is broad, viz. 68.94 (17)° for the chelate angle to a wide 132.627 (15)° for the I-Hg-I angle. The ligand mol-ecule is non-planar with the O atoms lying 0.422 (5) and -0.325 (5) Å o...

Anaerobic incubation of phorbol (1) from Croton tiglium with human intestinal bacteria afforded five metabolites: isophorbol (2), deoxyphorbol (3), 4beta,9alpha,20-trihydroxy-13,15-seco-1,6,15-tigliatriene-3,13-dione (4), 4beta,9alpha,20-trihydroxy-15,16,17-trinor-1,6-tigliadiene-3,13-dione (5) and 4beta,9a,20-trihydroxy-14(13-->12)-abeo-12alphaH-1,6-tigliadiene-3,13-dione (6). All these metabo...

(1)H-NMR and (13)C-NMR assignments of 12-oleanene-3,11-dione (compound 1) were completely described for the first time through conventional 1D NMR and 2D shift-correlated NMR experiments using (1)H-(1)HCOSY, HMQC, HMBC techniques. Based on its NMR data, the assignments of 28-hydroxyolean-12-ene-3,11-dione (compound 2) were partially revised.

The title compound, C(11)H(8)O(3), was isolated from Impatiens balsamina plants (balsam, LIB) grown in our laboratory. The two six-membered rings of the naphthalene-1,4-dione unit are coplanar [maximum deviation = 0.009 (1) Å]. The O and C atoms of the meth-oxy substituent also lie close to the naphthalene plane, with deviations of 0.0090 (2) and 0.047 (2) Å, respectively.

The asymmetric unit of the title compound, C(10)H(8)BrNO(2), contains three crystallographically independent mol-ecules. Two of the N-C-C-Br side chains adopt anti conformations [torsion angles = -179.8 (5) and -179.4 (4)°] and the other is gauche [-66.5 (6)°]. The crystal structure features short Br⋯O [3.162 (5) Å] contacts, C-H⋯O hydrogen bonds and numerous π-π stacking inter-actions [centroi...