申请人:University of Bath
公开号:US05185360A1
公开(公告)日:1993-02-09
Compounds of the formula ##STR1## wherein R is hydrogen or a lower alkyl group, R.sup.1 and R.sup.2 are independently selected from hydrogen or a lower alkyl group, R.sup.3, R.sup.4 and R.sup.6 are independently selected from hydrogen, halogen or a lower alkyl group, R.sup.5 is hydrogen, hydroxy, halogen, a lower alkyl group, a lower alkoxy group, a mono- or di-lower alkylamino group, NH.sub.2 or NR.sup.11 COR.sup.12, R.sup.7, R.sup.8, R.sup.9 and R.sup.10 are independently selected from hydrogen, hydroxy, a lower alkyl group, a lower alkoxy group, a mono- or di-lower alkylamino group, NH.sub.2 or NR.sup.11 COR.sup.12, R.sup.11 is a hydrogen or a lower alkyl group, R.sup.12 is a lower alkyl group, with the proviso that when R is hydrogen then at least one of the substituents R.sup.1 to R.sup.10 is not hydrogen, or a salt thereof, are useful as antioxidants, within the medical and non-medical field, and that when R is hydrogen, methyl or neopentyl in formula IA, then at least one of R.sup.1 to R.sup.10 is not hydrogen. Many of the compounds of formula IA and IB are new and various methods for preparing them are described.
式为##STR1##的化合物,其中R为氢或较低烷基,R.sup.1和R.sup.2分别选择自氢或较低烷基,R.sup.3、R.sup.4和R.sup.6分别选择自氢、卤素或较低烷基,R.sup.5为氢、羟基、卤素、较低烷基、较低烷氧基、一元或二元较低烷基胺基、NH.sub.2或NR.sup.11 COR.sup.12,R.sup.7、R.sup.8、R.sup.9和R.sup.10分别选择自氢、羟基、较低烷基、较低烷氧基、一元或二元较低烷基胺基、NH.sub.2或NR.sup.11 COR.sup.12,R.sup.11为氢或较低烷基,R.sup.12为较低烷基,但当R为氢时,则至少有R.sup.1到R.sup.10中的一个取代基不为氢,或其盐,在医药和非医药领域中是有用的抗氧化剂,且当式IA中R为氢、甲基或新戊基时,则至少有R.sup.1到R.sup.10中的一个不为氢。式IA和IB的许多化合物是新的,且描述了各种制备它们的方法。