Patent ID: 7161016

Claim:
A compound of the formula: wherein X is one of the group consisting of C═O and NH and Y is the other of that group; R 1 is selected from the group consisting of H, CH 3 and alkyl; R 2 is selected from the group consisting of alkyl, substituted alkyl, alkenyl, alkynyl, O-alkyl, cycloalkyl, polycyclic, heterocyclic, CH 2 CH═CH 2 , C≡CH, CH(R)CH 2 Z, CH 2 CH(R)Z and CH(R)(CH 2 )nCH 2 Z, R being selected from the group consisting of H, CH 3 , CH 2 CF 3 and (CH 3 ) 2 , Z being selected from the group consisting of H, halogens, N 3 , NCS and OH and n being selected from the group consisting of 0, 1 and 2; and R 3 is selected from the group consisting of alkyl, substituted alkyl, aryl, alkylaryl, O-alkyl, O-alkylaryl, cyclic radical, heterocyclic radical, n-C 5 H 10 Z′, n-C 6 H 12 Z′, n-C 7 H 14 Z′ and 1′,1′-C(CH 3 ) 2 (CH 2 ) 5 CH 2 Z′, Z′ being selected from the group consisting of H, halogens, CN, N 3 , NCS and OH; with the proviso that: when X is C═O, Y is NH, R 1 is H, R 3 is n-C 5 H 10 Z′ and Z′ is H, then R 2 can not be selected from the group consisting of C 1–5 alkyl, CH 2 CH 2 OH, CH(CH 3 )CH 2 OH, (CH 2 ) m OH (where m=1–10), CH(CH 3 )CH 2 F and CH 2 CH 2 OMe; and when X is C═O, Y is NH, R 1 is H, R 3 is selected from n-C 6 H 12 Z′, n-C 7 H 14 Z′, and 1′1′-C(CH 3 ) 2 (CH 2 ) 5 CH 2 Z′ and Z′ is H, then R 2 cannot be selected from the group consisting of C 1–5 alkyl and (CH 2 ) m OH (where m=1–10).