摘要:
The present invention relates to novel active substances (coniosetin and coniosetin derivatives) of the formula I which are produced by the microorganism Coniochaeta ellipsoidea Udagawa (DSM 13856) during fermentation, wherein R, R2, R3, R4, R5, X, X2, X3 and X4 have the meanings stated in the specification, to chemical derivatives of coniosetin, to a process for their preparation and to their use as pharmaceuticals.