Patent ID: 8093393

Claim:
A compound of formula: wherein: R 1 is A is —CH 2 — or —CH(OH)—; B is —CH 2 CH 2 —, —CH(OH)CH 2 —, or -trans-CH═CH—; R 4 is —H, —CH 3 , or -phenyl, optionally substituted with one or more R 8 ; each R 5 is independently —H or —(C 1 -C 10 )alkyl; R 6 is —(C 1 -C 16 )alkyl; R 8 is —(C 1 -C 6 )alkyl; a is an integer from 0 to 26; d is 1; e is 1; f is an integer from 0 to 20; and M − is a counter anion.