Studies on a new antibiotic SF-2330. II. The structural elucidation

The structure of antibiotic SF-2330 has been elucidated to be 11-hydroxy-5-methyl-2-(2,2'-bioxiran-2-yl)-4H-anthra[1,2-b] pyran-4,7,12-trione by spectral analyses. The olefinic side chain at C-2 of alpha-indomycinone is replaced by a bioxiran-2-yl group in SF-2330.