A method for the preparation of substituted anthraquinones and their use for the preparation of rheinen

摘要

PCT No. PCT/FR96/01714 Sec. 371 Date Jul. 1, 1997 Sec. 102(e) Date Jul. 1, 1997 PCT Filed Oct. 31, 1996 PCT Pub. No. WO97/16404 PCT Pub. Date May 9, 1997A process for the preparation of substituted anthraquinones is provided. The anthraquinones can be used to prepare pharmaceutically useful rheins.