申请人:Oxis Isle of Man, Limited
公开号:US06056965A1
公开(公告)日:2000-05-02
The invention relates to 2-mercaptoimidazole derivatives substituted in the 4(or 5)-position. These 2-mercaptoimidazole derivatives are of the general formula (I) below: ##STR1## wherein: R.sub.1, R.sub.2, R.sub.5, R.sub.7 and R.sub.8 are hydrogen, a lower alkyl, an aralkyl or a substituted aralkyl, wherein at least one of R.sub.1 and R.sub.2 is hydrogen; R.sub.3 is (CH.sub.2).sub.n COR.sub.4, --(CH.sub.2).sub.n N.sup.+ (R.sub.5 R.sub.6 R.sub.7).X.sup.- or --CH.sub.2 CH(COR.sub.4)N.sup.+ (R.sub.5 R.sub.6 R.sub.7).X.sup.- ; R.sub.4 is OR.sub.8, --NHR.sub.5, --.alpha.-amino acid, --NHCH.sub.2 CH.sub.2 SO.sub.3.sup.-.Y.sup.+, --NHCH.sub.2 CH.sub.2 CO.sub.2.sup.- Y.sup.+, --OCH.sub.2 CH.sub.2 N.sup.+ (CH.sub.3).sub.3.X.sup.- ; ##STR2## n=1 or 2; X.sup.31 is an anion of an acid acceptable in cosmetics, pharmaceuticals or foodstuffs; and Y.sup.+ is a cation of a base acceptable in cosmetics, pharmaceuticals or foodstuffs. These compounds are valuable as antioxidants and as active principles of pharmaceutical, cosmetic or food compositions with antioxidant activity.
该发明涉及在4(或5)位取代的2-巯基咪唑衍生物。这些2-巯基咪唑衍生物的一般式(I)如下:其中:R.sub.1,R.sub.2,R.sub.5,R.sub.7和R.sub.8为氢,低碳烷基,芳基烷基或取代芳基烷基,其中至少有一个为氢;R.sub.3为(CH.sub.2).sub.n COR.sub.4,--(CH.sub.2).sub.n N.sup.+(R.sub.5 R.sub.6 R.sub.7).X.sup.-或--CH.sub.2 CH(COR.sub.4)N.sup.+(R.sub.5 R.sub.6 R.sub.7).X.sup.-;R.sub.4为OR.sub.8,--NHR.sub.5,--.alpha.-氨基酸,--NHCH.sub.2 CH.sub.2 SO.sub.3.sup.-.Y.sup.+,--NHCH.sub.2 CH.sub.2 CO.sub.2.sup.- Y.sup.+,--OCH.sub.2 CH.sub.2 N.sup.+(CH.sub.3).sub.3.X.sup.-;n=1或2;X.sup.31为化妆品、药品或食品中可接受的酸的阴离子;Y.sup.+为化妆品、药品或食品中可接受的碱的阳离子。这些化合物作为抗氧化剂以及具有抗氧化活性的药用、化妆品或食品组合物的活性成分是有价值的。