| 摘要 |
Compounds of formula (I) where R1, R2, R3 and R4 independently are hydrogen, lower alkyl of 1 to 6 carbons, halogen or lower alkoxy of 1 to 6 carbons; R5 and R5' independently are hydrogen or lower alkyl of 1 to 6 carbons; Y is oxygen or sulfur; Z is n-alkyl having 1 to 10 carbons, cyclo or branched chain alkyl of 3 to 10 carbons, and straight chain alkenyl having 2 to 10 carbons, or cyclo or branched chain alkenyl of 3 to 10 carbons; X is a heteroaryl group selected from a group consisting of thienyl, pyridyl, furyl, pyridazinyl, pyrimidinyl, pyrazinyl, thiazolyl and oxazolyl; A is (CH2)n where n is 0-5, lower branched chain alkyl having 3 to 6 carbons, cycloalkyl having 3 to 6 carbons, alkenyl having 2 to 6 carbons and 1 or 2 double bonds, alkynyl having 2 to 6 carbons and 1 or 2 triple bonds; B is hydrogen, COOH or a pharmaceutically acceptable salt thereof, COOR8, CONR9R10, -CH2OH, CH2OR11, CH2OCOR11, CHO, CH(OR12)2, CHOR13O, -COR7, CR7(OR12)2, or CR7OR13O, where R7 is an alkyl, cycloalkyl or alkenyl group containing 1 to 5 carbons, R8 is an alkyl group of 1 to 10 carbons, or a cycloalkyl group of 5 to 10 carbons, or R8 is phenyl or lower alkylphenyl, R9 and R10 independently are hydrogen, an alkyl group of 1 to 10 carbons, or a cycloalkyl group of 5 to 10 carbons, or phenyl or lower alkylphenyl, R11 is alkyl of 1 to 10 carbons, phenyl or lower alkylphenyl, R12 is lower alkyl, and R13 is divalent alkyl radical of 2 - 5 carbons, have retinoic acid like biological activity.
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