| 摘要 |
The present invention is to provide an aliphatic nitrogen-containing 5-membered ring compound represented by the formula ÄIÜ : <CHEM> wherein symbols in the formula have the following meanings; A: -CH2- or -S-, B: CH or N, R<1>: H, a lower alkyl group, etc., X: a single bonding arm, -CO-, -Alk-CO-, -COCH2-, -Alk-O-, -O-CH2-, -SO2-, -S-, -COO-, -CON(R<3>)-, -Alk-CON(R<3>)-, -CON(R<3>)CH2-, -NHCH2-, etc., R<3>: hydrogen atom or a lower alkyl group, Alk: a lower alkylene group, and R<2>: (1) a cyclic group which may be substituted, (2) a substituted amino group, etc., provided that when X is -CO-, then B is N, or a pharmaceutically acceptable salt thereof. |
