| abstract |
The present invention provides a compound represented by Formula (II): n n n n n n n n n n n n wherein R 1 , R 2 , R 3 , and R 4 are each independently selected from a hydrogen atom, an optionally substituted C 1 -C 6 alkyl group, an optionally substituted C 7 -C 14 aralkyl group and —C(═O)Rx; Rx is an optionally substituted C 1 -C 6 alkyl group, an optionally substituted aryl group, an optionally substituted heteroaryl group, an optionally substituted C 1 -C 6 alkoxy group or —NReRf; Ar 1 is an optionally substituted aromatic carbocyclic ring, or an optionally substituted aromatic heterocyclic ring which may form a condensed ring; Q is —(CH 2 ) m -(L) p - or -(L) p -(CH 2 ) m —; m is an integer selected from 0 to 2, n is an integer selected from 1 and 2, and p is an integer selected from 0 and 1; L is —O—, —S— or —NR 5 —; A is an optionally substituted aryl group or an optionally substituted heteroaryl group; and a prodrug thereof and a pharmaceutically acceptable salt thereof, and a pharmaceutical agent or a pharmaceutical composition, which comprises the compound. |