<i>ent</i>-Homoabyssomicins A and B, Two New Spirotetronate Metabolites from <i>Streptomyces</i> sp. Ank 210

Abstract

ent-Homoabyssomicins A (1) and B (2) are new complex polycyclic spirotetronate metabolites isolated from Streptomyces sp. isolate Ank 210. The structures of 1 and 2 were elucidated by detailed spectroscopic analyses of 1D and 2D NMR data. The absolute configuration of 1 was established by subsequent single-crystal X-ray diffraction studies.