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##
STR1##中的化合物,其中R是
氢或较低的烷基基团,R.sup.1和R.sup.2分别选择自
氢或较低的烷基基团,R.sup.3、R.sup.4和R.sup.6分别选择自
氢、卤素或较低的烷基基团,R.sup.5是
氢、羟基、卤素、较低的烷基基团、较低的烷
氧基、单或双较低的烷基
氨基基团、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、较低的烷基基团、较低的烷
氧基、单或双较低的烷基
氨基基团、NH.sub.2或NR.sup.11 COR.sup.12,R.sup.11是
氢或较低的烷基基团,R.sup.12是较低的烷基基团,但是当R为
氢时,那么R.sup.1到R.sup.10中至少有一个取代基不是
氢,或其盐,可用作
抗氧化剂,在医学和非医学领域内,当R为
氢、
甲基或新戊基在式IA中时,那么R.sup.1到R.sup.10中至少有一个不是
氢。式IA和IB的许多化合物是新的,描述了各种制备它们的方法。