Patent ID: 7718782

Claim:
A sophorolipid produced by a method comprising reacting a compound of formula I with a compound of formula II wherein R 1 and R 2 are H, C 1 -C 18 alkyl, C 3 -C 18 alkenyl, C 3 -C 10 cycloalkyl, phenyl, or C 1 through C 18 acyl or C 1 through C 18 alkoxycarbonyl, R 1 and R 2 are not both acyl, R 3 is H, CH 3 , CH 2 -phenyl, CH 2 —C 6 H 4 —OH, CH 2 CO 2 H, CH 2 CH 2 CO 2 H, CH(CH 3 ) 2 , CH 2 CH(CH 3 ) 2 , CH(CH 3 )CH 2 CH 3 , CH 2 OH, CH(CH 3 )OH, CH 2 CH 2 CH 2 CH 2 NH 2 , CH 2 CH 2 CONH 2 , CH 2 CONH 2 , CH 2 —C 3 N 2 H 3 (histidine), CH 2 CH 2 CH 2 NHC(NH)NH 2 , CH 2 CH 2 SCH 3 , CH 2 CH 2 CO 2 CH 2 C 6 H 5 , CH 2 CH 2 CH 2 CH 2 NHCOOCH 2 C 6 H 5 , or COOC 4 H 9 , R 2 and R 3 may be joined in a ring, R 4 is H, C 1 -C 18 alkyl, C 3 -C 18 alkenyl, C 3 -C 10 cycloalkyl, or phenyl, n is 0-6, R 5 and R 6 are H, C 1 -C 18 alkyl, C 3 -C 18 alkenyl, C 3 -C 10 cycloalkyl, or phenyl, and X is C 1 -C 18 alkyl or C 1 -C 18 alkenyl; optionally followed by acidolytic or hydrogenolytic deprotection wherein one of the groups R 1 or R 2 is replaced with hydrogen.