| abstract |
Provided is a pyrazolopyrimidine compound represented by formula (I) having an HIF-PHD inhibitory effect, or a pharmaceutically acceptable salt thereof. n n n n n n n n n n [In the formula, n n n n n n n n n n represents an optionally substituted 7-hydroxypyrazolo[4,3-d]pyrimidine-5-yl,n nX represents a simple bond or an optionally substituted straight-chain alkylene,n nZ represents hydrogen atom, or formula (i), formula (ii) or formula (iii)n n n n n n n n n n n andn nrings A and A′ are independently an optionally substituted aryl, an optionally substituted heteroaryl, an optionally substituted alicyclic hydrocarbon, or an optionally substituted non-aromatic heterocycle.] |