Patent ID: 7112679

Claim:
A compound of formula (VI): wherein: r is an integer from 0 to 4; R 1 is independently selected at each occurrence from the group consisting of: C 1 –C 10 alkyl, C 2 –C 10 alkenyl, C 2 –C 10 alkynyl, C 3 –C 6 cycloalkyl, C 4 –C 12 cycloalkylalkyl, —NR 1c R 1d , —OR 1e , and —SR 1e ; R 1c and R 1d are independently selected at each occurrence from the group consisting of: H, C 1 –C 10 alkyl, C 2 –C 10 alkenyl, C 2 –C 10 alkynyl, C 3 –C 6 cycloalkyl and C 4 –C 12 cycloalkylalkyl; alternatively, R 1c and R 1d are taken together to form a heterocyclic ring selected from the group consisting of: piperidine, pyrrolidine, piperazine, N-methylpiperazine, morpholine and thiomorpholine, each heterocyclic ring optionally substituted with 1–3 C 1 –C 4 alkyl groups; R 1e is independently selected at each occurrence from the group consisting of: H, C 1 –C 10 alkyl, C 3 –C 6 cycloalkyl, and C 4 –C 6 cycloalkylalkyl; R 2 is selected from the group consisting of: H, C 2 –C 4 alkenyl, C 2 –C 4 alkynyl, C 3 –C 6 cycloalkyl, C 4 –C 10 cycloalkylalkyl, C 1 –C 4 hydroxyalkyl, C 1 –C 4 haloalkyl, and C 1 –C 4 alkyl substituted with 0–5 R 2a ; R 2a is independently selected at each occurrence from the group consisting of: H, C 1 –C 10 alkyl, C 2 –C 10 alkenyl, C 2 –C 10 alkynyl, C 3 –C 6 cycloalkyl, C 4 –C 12 cycloalkylalkyl, halo, CN, C 1 –C 4 haloalkyl, —OR 2e , and —SR 2e ; and R 2e is independently selected at each occurrence from the group consisting of: H, C 1 –C 10 alkyl, C 3 –C 6 cycloalkyl, and C 4 –C 6 cycloalkylalkyl; with the following provisos; (1) when R 2 is H, methyl or ethyl, then r is an integer form 1 to 4; and (2) when R 2 is unsubstituted C 1 –C 4 alkyl, then R 1 is not OH.