abstract |
Compound of Formula (I) in which: R1 and R2 identical or different, each represents a hydrogen atom or an acyl or alkyl group, Ar represents an aryl or heteroaryl group, A represents a group chosen from Formula (II), R4 represents a hydrogen atom or a alkyl group, R5 represents a hydrogen atom or a chosen group among alkyl, aryl and heteroaryl, R3 represents an aryl group, heteroaryl, dicyclopropylmethyl or benzhydryl, or A-R3 represents a optionally substituted naphthyl group, excluding 2,5-dihydroxy-3- (4-methoxyphenyl) -6- (2-phenylethenyl) -1,4-benzoquinone, 2,5-dihydroxy-3- (4-methoxyphenyl) -6- (2-naphthyl) -1,4-benzoquinone, and 2,5-dihydroxy-3- (2-naphthyl) -6-phenyl-1,4-benzoquinone. |