| 主权项 |
1. A compound of formula (Ib) wherein G1, G2, G3 and G4 are independently alkyl of 1 to 4 carbon atoms or G1 and G2 and/or G3 and G4 are together tetramethylene or pentamethylene; E is independently straight or branched chain C1-C24alkyl, straight or branched chain C2-C18alkenyl, C3-C20alkinyl, C3-C12cycloalkyl, C5-C12cycloalkenyl, phenyl, naphthyl or C7-C15phenylalkyl; where said straight or branched chain C1-C24alkyl, straight or branched chain C2-C24alkenyl, C3-C12cycloalkyl, C5-C12cycloalkenyl or C3-C20alkinyl can be substituted by one or more -halogen, —OH, —OR122, —NH2, —NHR122, —N(R122)2, —NHCOR122, —NR122COR122, —OCOR122, —COR122, —SO2R122, —SR122, —SOR122, —P(OR122)3, —P(O)(OR122)2 or P(R122)3; where said straight or branched chain unsubstituted or substituted C1-C24alkyl, straight or branched chain unsubstituted or substituted C2-C24alkenyl, C5-C12cycloalkyl, C5-C12cycloalkenyl or C2-C18alkinyl can also be interrupted by one or more —O—, —NH— or —NR122— groups or combinations thereof; and where said phenyl, naphthyl or C7-C15phenylalkyl can also be substituted by one or more halogen, —CN, —CF3, —NO2, —NHR122, —N(R122)2, —OH, —OR122 or —COR122; wherein R122 is hydrogen, straight or branched chain C1-C18alkyl, straight or branched chain C2-C18 alkenyl, C3-C10cycloalkyl, phenyl, naphthyl or C7-C15phenylalkyl; and W is CH2 or CH3; if W is CH3, k is 0; and if W is CH2, Y is a direct bond, CH2 or C(CH3)2. |
