Patent ID: 8809533

Claim:
A compound of formula (Ib) wherein G 1 , G 2 , G 3 and G 4 are independently alkyl of 1 to 4 carbon atoms or G 1 and G 2 and/or G 3 and G 4 are together tetramethylene or pentamethylene; E is independently straight or branched chain C 1 -C 24 alkyl, straight or branched chain C 2 -C 18 alkenyl, C 3 -C 20 alkinyl, C 3 -C 12 cycloalkyl, C 5 -C 12 cycloalkenyl, phenyl, naphthyl or C 7 -C 15 phenylalkyl; where said straight or branched chain C 1 -C 24 alkyl, straight or branched chain C 2 -C 24 alkenyl, C 3 -C 12 cycloalkyl, C 5 -C 12 cycloalkenyl or C 3 -C 20 alkinyl can be substituted by one or more -halogen, —OH, —OR 122 , —NH 2 , —NHR 122 , —N(R 122 ) 2 , —NHCOR 122 , —NR 122 COR 122 , —OCOR 122 , —COR 122 , —SO 2 R 122 , —SR 122 , —SOR 122 , —P(OR 122 ) 3 , —P(O)(OR 122 ) 2 or P(R 122 ) 3 ; where said straight or branched chain unsubstituted or substituted C 1 -C 24 alkyl, straight or branched chain unsubstituted or substituted C 2 -C 24 alkenyl, C 5 -C 12 cycloalkyl, C 5 -C 12 cycloalkenyl or C 2 -C 18 alkinyl can also be interrupted by one or more —O—, —NH— or —NR 122 — groups or combinations thereof; and where said phenyl, naphthyl or C 7 -C 15 phenylalkyl can also be substituted by one or more halogen, —CN, —CF 3 , —NO 2 , —NHR 122 , —N(R 122 ) 2 , —OH, —OR 122 or —COR 122 ; wherein R 122 is hydrogen, straight or branched chain C 1 -C 18 alkyl, straight or branched chain C 2 -C 18 alkenyl, C 3 -C 10 cycloalkyl, phenyl, naphthyl or C 7 -C 15 phenylalkyl; and W is CH 2 or CH 3 ; if W is CH 3 , k is 0; and if W is CH 2 , Y is a direct bond, CH 2 or C(CH 3 ) 2 .