X-Ray determination of the molecular structure of the novel antibiotic DC-52-d, 6-hydroxymethyl-3,12-imino-7-methoxy-13-methyl-1,2,3,4-tetrahydroazepino[1,2-b]isoquinoline-1-carboxylic acid
The molecular geometry of the title compound has been determined by X-ray diffraction. The molecule has a novel tetracyclic skeleton. Crystallographic data are a= 11.185(2), b= 15.878(2), c= 11.1184(9)Å, Z= 4, space group P212121. Diffractometer intensity measurements were made with Mo-Kα radiation and least-squares adjustment of the atomic parameters converged at Rw 0.069 for 1 793 |F0| values.