Neuromuscular relaxants

A compound having the formula

• where R1 and R1′ are di- or polysubstituted aralkyl or aralkenyl;
• provided that at least one substituent on each aralkyl or aralkenyl group is alkoxy or acyloxy;
• R2 and R2′ are alkyl or alkenyl;
• A is normal or substituted alkanedicarbonyl, alkenedicardonyl, alkynedicarbonyl, cycloalkanedicarbonyl, cycloalkenedicarbonyl, bicycloalkanedicarbonyl, bicycloalkenedicarbonyl, polycycloalkanedicarbonyl, polycycloalkenedicarbonyl, or aromatic dicarbonyl:
• N is 0, 1, or 2;
• m is 0, 1, or 2, p is 0, 1 or 2;
• R3 and R3′ are H, CH3, or lower alkyl;
• R4 and R4′ are H, CH3, or lower alkyl;
• R3 and R4 , together can also be -(CH2)g-, -CH=CH-, -(CH2)h-
• or —(CH2)hS—(CH2)k—, where g is 2,3,4, or 5, h is 1 or 2, and k is 1 or 2;
• and R3′ and R4′ can also be -(CH2)g-, CH=CH-, -(CH2)h-O-(CH2)k,
• or —(CH2h—S—(CH2)k—, where g is 2,3,4, or 5, h is 1 or 2, and k is 1 or 2;
• wherein R1 and R1′, R2 and R2′, R3 and R3′, R4 and R4′ can be the same or different;
• and X is a pharmaceutically acceptable anion.