PHENANTHRENDERIVAT.

摘要

A novel phenanthrene derivative of general formula (1), its salt, a compound further derived therefrom, and its salt; a process for the production thereof; and an interleukin 1 (IL-1) inhibitor containing the derivative as the active ingredient, wherein (a) represents (b) wherein R' represents hydrogen or lower alkyl, (c) wherein R<2> represents hydrogen or lower alkanoyl, or (d) wherein R<2> is as defined above.