Muscarinic acetylcholine receptor antagonists

A method of inhibiting the binding of acetylcholine to an acetylcholine receptor in a human in need thereof, which comprises contacting the acetylcholine receptor with an effective amount of a compound of Formula (I)

• (I)
• wherein:
• R1 is
• R2 and R3 are independently selected from the group consisting of:
• where F, G, H, K, and L are independently selected from the group consisting of hydrogen, halogen, —C1-4 alkyl, halosubstituted —C1-4 alkyl, hydroxyl substituted alkyl, and —C1-4 alkoxy;
• 1 is an integer having a value of 1 or 2;
• n is an integer having a value of 1 to 4;
• M is O or CH2;
• V is O or CH2;
• X− is a pharmaceutically acceptable anion, and
• wherein the method of contacting the receptor is by topical application to said human.