abstract |
The present invention provides novel inhibitors of IAP useful as therapeutic agents for treating malignant tumors of formula (I). (I) In the formula, A, Q, X 1 , X 2 , Y, R 1 , R 2 , R 3 , R 4 , R 4 ′ , R 5 , R 6, and R 6 ′ are as described in the specification. |