| 摘要 |
A compound represented by the formula (I) [wherein W represents C(R) or N; A represents optionally substituted aryl or optionally substituted heteroaryl; Xrepresents -NR-Y4 -O-, -S-, -SO-, -SO-, or -CHR- (wherein Rrepresents hydrogen or an optionally substituted aliphatic hydrocarbon group, provided that Rmay be bonded to A to form an optionally substituted ring structure); Rrepresents hydrogen or an optionally substituted group bonded through a carbon, nitrogen, or oxygen atom; and Rrepresents hydrogen or an optionally substituted group bonded through a carbon or sulfur atom, provided that Rmay be bonded to Ror Rto form an optionally substituted ring structure] or a salt of the compound. Also provided is a tyrosinkinase inhibitor or a preventive/therapeutic agent for cancers which each contains the compound or a prodrug thereof.(I) |
