| abstract |
The present disclosure provides a compound that exerts an anticancer action based on CHK1 inhibition. The present disclosure was completed by finding that a compound represented by formula (1) or a pharmaceutically acceptable salt thereof exhibits an excellent antitumor action by having a potent inhibitory action against CHK1: n n n n n n n n n n wherein R 1 , R 2 , L, V, W, and Q are as defined herein, X, Y, and Z each independently represent CR 8 or a nitrogen atom, wherein X, Y, and Z are not simultaneously CR 8 , and R 8 is as defined herein. |