Patent ID: 8471020

Claim:
A compound of formula wherein R 1 and R 2 are independently selected from the group consisting of H, C 1-30 -alkyl, C 2-30 -alkenyl, C 2-30 -alkynyl, C 3-10 -cycloalkyl, C 5-10 -cycloalkenyl, 3-14 membered cycloheteroalkyl, C 6-14 -aryl and 5-14 membered heteroaryl, wherein if R 1 or R 2 are C 1-30 -alkyl, C 2-30 -alkenyl or C 2-30 -alkynyl, this R 1 or R 2 can be optionally substituted with 1 to 6 groups independently selected from the group consisting of halogen, —CN, —NO 2 , —OH, C 1-10 -alkoxy, —O—CH 2 CH 2 O—C 1-10 -alkyl, —O—COR 3 , —S—C 1-10 -alkyl, —NH 2 , —NHR 3 , —NR 3 R 4 , —NH—COR 3 , —COOH, —COORS, —CONH 2 , —CONHR 3 , —CONR 3 R 4 , —CO—H, —COR 3 , C 3-10 -cycloalkyl, 3-14 membered cycloheteroalkyl, C 6-14 -aryl and 5-14 membered heteroaryl; if R 1 or R 2 are C 3-10 -cycloalkyl, C 5-10 -cycloalkenyl or 3-14 membered cycloheteroalkyl, this R 1 or R 2 can be optionally substituted with 1 to 6 groups independently selected from the group consisting of halogen, —CN, —NO 2 , —OH, C 1-10 -alkoxy, —O—CH 2 CH 2 O—C 1-10 -alkyl, —O—COR 3 , —S—C 1-10 -alkyl, —NH 2 , —NHR 3 , —NR 3 R 4 , —NH—COR 3 , —COOH, —COORS, —CONH 2 , —CONHR 3 , —CONR 3 R 4 , —CO—H, —COR 3 , C 1-10 -alkyl, C 2-10 -alkenyl, C 2-10 -alkynyl, C 6-14 -aryl and 5-14 membered heteroaryl; if R 1 or R 2 are C 6-14 -aryl or 5-14 membered heteroaryl, this R 1 or R 2 can be optionally substituted with 1 to 6 groups independently selected from the group consisting of halogen, —CN, —NO 2 , —OH, C 1-10 -alkoxy, —O—CH 2 CH 2 O—C 1-10 -alkyl, —O—COR 3 , —S—C 1-10 -alkyl, —NH 2 , —NHR 3 , —NR 3 R 4 , —NH—COR 3 , —COOH, —COORS, —CONH 2 , —CONHR 3 , —CONR 3 R 4 , —CO—H, —COR 3 , C 1-10 -alkyl, C 2-10 -alkenyl, C 2-10 -alkynyl, C 3-10 -cycloalkyl, C 5-10 -cycloalkenyl and 3-14 membered cycloheteroalkyl, wherein R 3 and R 4 are at each occurrence are independently from each other selected from the group consisting of C 1-10 -alkyl, C 2-10 -alkenyl, C 2-10 -alkynyl, C 3-10 -cycloalkyl, C 5-10 -cycloalkenyl, 3-14 membered cycloheteroalkyl, C 6-14 -aryl and 5-14 membered heteroaryl.