申请人:UNIVERSITY OF BATH
公开号:EP0409410A1
公开(公告)日:1991-01-23
Compounds of the formula
wherein R is hydrogen or a lower alkyl group or COR¹⁵
R¹, R², R¹¹ and R¹², are hydrogen or a lower alkyl group,
R³, R⁴, R⁵ and R⁶ are hydrogen, hydroxy, halogen, a lower alkyl group, a lower alkoxy group or a mono- or di-lower alkyl amino group, NH₂ or NR¹³COR¹⁴,
R⁷, R⁸, R⁹ and R¹⁰ are hydrogen, hydroxy, a lower alkyl group, a lower alkoxy group, a mono- or di-lower alkylamino group, or NH¹³COR¹⁴ wherein R¹³, R¹⁴ and R¹⁵ are hydrogen or a lower alkyl group, enantiomers and salts thereof, with the proviso that when R is COR¹⁵ then at least one of R³ to R¹⁰ are hydroxy or a mono or di-lower alkylamino group, are useful as antioxidants, within the medical and non-medical field. Many of the compounds of formula IA and IB are new and various methods for preparing them are described.
式中的化合物
其中 R 是氢或低级烷基或 COR¹⁵
R¹、R²、R¹¹ 和 R¹² 为氢或低级烷基、
R³、R⁴、R⁵ 和 R⁶ 是氢、羟基、卤素、低级烷基、低级烷氧基或单或双低级烷基氨基、NH₂ 或 NR¹³COR¹⁴、
R⁷、R⁸、R⁹和 R¹⁰ 是氢、羟基、低级烷基、低级烷氧基、单或双低级烷基氨基或 NH¹³COR¹⁴ 其中 R¹³、R¹⁴ 和 R¹⁵ 是氢或低级烷基、对映体及其盐,但当 R 为 COR¹⁵ 时,R³ 至 R¹⁰ 中至少有一个是羟基或单或双低烷基氨基,可用作医疗和非医疗领域的抗氧化剂。式 IA 和 IB 的许多化合物都是新化合物,并介绍了制备它们的各种方法。