New aglycone useful for the preparation of the antibiotics and antitumoral of the series of anthracyclines and their preparation.

摘要

The present invention relates to novel meet aglycone which has the general formula: & br / (see appended drawing in bopi) & br / in which: r, r, r, r, which may be identical or different represent an atom of 1996, or an oh group, ometal, however, r being an alkyl group, substituted or not in a c, r denotes an atom of 1996, or a group cochr, r being the 1996, or an alkyl group, hydroxy, alkoxy or aryl, r and r, which are always different, represent either an atom of 1996 is an oh group and r denotes an atom of 1996, or the group chco -. & / p & & p & application for the preparation of the antibiotics and antitumoral.