| abstract |
Provided is a dihydropyranopyrimidine derivative useful as a pharmaceutical such as an antiallergic agent or an antiinflammatory agent. A compound represented by formula (1), or a pharmaceutically acceptable salt thereof. In formula (1), R1 is a group represented by formula (Ya), a group represented by formula (Yd) (wherein R8 is a hydrogen atom, an alkyl group, or the like; R8a1 and R8a2 are each a hydrogen atom, an alkyl group, or the like; R9, R10, R11, R12, R13, R14, R15, R16, R17, R18, R19, and R20 are each independently a hydrogen atom, or the like; h is an integer of 1 to 2; p is an integer of 0 to 2; s is an integer of 1 to 4; and t is an integer of 1 to 4), R2 and R3 are each a substituted or unsubstituted alkyl group or the like, or may be joined together with the carbon atom to which they are bonded to form a 3- to 8-membered carbon ring or the like; R4, R5, R6, and R7 are each independently a hydrogen atom or the like; X is a hydrogen atom or an amino group. |