The present invention relates to a compound represented by the formula (I) or (I′):
wherein each symbol is as defined in the specification, or a salt thereof, and a PI3K and(or) mTOR inhibitor containing the compound or a prodrug thereof.
This invention provides compounds of formula IA or IB:
wherein R
1
, R
2
, G
1
and HY are as described in the specification. The compounds are inhibitors of PI3K and/or mTor and are thus useful for treating proliferative, inflammatory, or cardiovascular disorders.