| 摘要 |
Ester and amides having the formula <IMAGE> I <IMAGE> II wherein R, R1 and R2 are independently lower alkyl or cycloalkyl groups, R3 is hydrogen, alkyl, cycloalkyl, alkylene, phenyl, phenyl substituted by alkyl groups, alkylthioethyl, thiobis-alkylene, alkyleneoxyalkylene, polyoxyalkylene or a polyvalent cyclic or acyclic hydrocarbon radical, R4 is hydrogen, lower alkyl, cycloalkyl, R5 is hydrogen, alkyl, phenyl, phenyl subsstituted by alkyl groups, alkylene, a polyvalent cyclic or acyclic hydrocarbon radical or alkyleneoxyalkylene, A is lower alkylene, m is 1 to 4 and n is 1 to 6.
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