Phosphine transition metal complex, process for producing same, and anticancer agent

1 23 43 4 −An anticancer agent having a novel chemical structure and high anticancer activity is provided. A phosphine transition metal complex of general formula (1) and an anticancer agent containing the complex are disclosed. Rand R, which may be the same or different, each represent a group having 1 to 10 carbon atoms selected from a straight-chain or branched alkyl group, a cycloalkyl group, a substituted cycloalkyl group, an adamantyl group, a phenyl group, and a substituted phenyl group; Rand R, which may be the same or different, each represent a hydrogen atom, a straight-chain alkyl group having 1 to 6 carbon atoms or branched alkyl group having 1 to 6 carbon atoms; or Rand Rare taken together to form a saturated or unsaturated ring which may have a substituted group; M represents a transition metal atom selected from the group consisting of gold, copper, and silver; and X represents an anion.