| 摘要 |
A description is given of compounds obtainable by reacting compounds of the gene ral formula <IMG> or <IMG> (1) (2) where A is O or N-R2 and B is a direct bond or O-CH2-CH2, the carbon of the ethylene group being attached to the nitrogen of the piperidine ring, and R' is H, C1-C20alkyl, C2-C20alkenyl, C2-C20 alkynyl, C6-C20aryl, C7-C20aralkyl, O-C1-C20alkyl, O-C5-C8cycloalkyl, CO-C1-C20alkyl, COC6-C20aryl, CO-C7-C20aralkyl, O-CO-C1-C20alkyl or C1-C6alkyl-Z-C1-C6alkyl, where Z is O, S o r C=O, and R2 is C1-C12alkyl or <IMG> and Y is O or N-R4, or Y-R3, following removal of <IMG> the hydrogen in position 4 of the piperidine ring, is the divalent radical ¢~ spiro compound!, and R3 is C1-C20alkyl, CO-C1-C20alkyl, CO-C6-C20aryl or CO-C 7-C20aralkyl, R4 is C1-C20alkyl, or else, if R3 is other than C1-C20alkyl, is hydrogen with at least one secondary or primary amine or ammonia.
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