| 摘要 |
A muscarinic receptor antagonist, useful in treating irritable bowel syndrome, of the formula:- <CHEM> or a pharmaceutically acceptable salt thereof, wherein R<1> is a group of the formula:- <CHEM> where Z and Z<1> are each independently hydrogen, halo or C1-C4 alkyl; X is -(CH2)2-, -CH=CH-, -CH2-S-, -CH2-O-, -S- or -O-; Y is a direct link, O or S; R<2> and R<3> are each independently C1-C4 alkyl or together represent -(CH2)p- where p is 2, 3, 4 or 5; R<4> is H or C1-C4 alkyl; m is 1, 2 or 3, with the proviso that when m is 1, Y is a direct link; and R is a group of the formula:- <CHEM> where either R<5> and R<6> are certain specified optional substituents, or R<5> and R<6>, when attached to adjacent carbon atoms, together represent a group of the formula -O(CH2)rO- where r is 1, 2 or 3, -O(CH2)2- or -(CH2)3-; R<7> is H, C1-C4 alkyl or -CONH2; and R<8> is H, C1-C4 alkyl or C1-C4 alkoxy. |
