Patent ID: 7371855

Claim:
A compound of Formula (6) wherein R is alkyl, aryl, or arylalkyl, and wherein R 1 is wherein R 2 and R 3 together are —(CH 2 ) 4 —, —(CH 2 ) 5 —, —(CH(R 4 )—CH 2 ) 3 —, —(CH(R 4 )—CH 2 ) 4 —, —(CH(R 4 )—CH 2 ) 2 —CH(R 4 ))— —CH(R 4 )—(CH 2 ) 3 —CH(R 4 ))—, —CH 2 —CH 2 -A-CH 2 —CH 2 —, —CH(R 4 )—CH 2 -A-CH 2 CH 2 —, —CH(R 4 )—CH 2 -A-CH 2 —CH(R 4 )— wherein R 4 is alkyl of from one to four carbon atoms, A is O, S, or N, and R is as defined above.