Silicon compounds derived from ascorbic acid
    4.
    发明授权
    Silicon compounds derived from ascorbic acid 失效
    衍生自抗坏血酸的硅化合物

    公开(公告)号:US06780888B1

    公开(公告)日:2004-08-24

    申请号:US10111537

    申请日:2002-05-24

    Abstract: The invention concerns novel silicon compounds derived from ascorbic acid consisting of a silicon-containing chain or of silanes, comprising at least a radical A of formula (I) wherein: at least one of the radicals L is a divalent radical for fixing A on the silicon chain. The invention further concerns methods for preparing said compounds, compositions, in particular cosmetic or pharmaceutical, containing them, and their use as antioxidant and/or anti-free radical agent, particularly for treating oxidant stress, for treating the effects of exposure to the sun and for preventing ageing.

    Abstract translation: 本发明涉及衍生自由含硅链或硅烷组成的抗坏血酸的新型硅化合物,其至少包含式(I)的基团A,其中:基团L中的至少一个是用于将A固定的二价基团 硅链。 本发明还涉及制备所述化合物,组合物,特别是含有它们的化妆品或药物的方法,以及它们作为抗氧化剂和/或抗自由基剂的用途,特别是用于治疗氧化应激,用于治疗暴露于太阳的作用 并防止老化。

    2-mercapto-imidazole derivatives substituted in position 4 (or 5) as
antioxidizing agents, method of preparation and applications in the
pharmaceutical, cosmetic or food industries
    9.
    发明授权
    2-mercapto-imidazole derivatives substituted in position 4 (or 5) as antioxidizing agents, method of preparation and applications in the pharmaceutical, cosmetic or food industries 失效
    在位置4(或5)上取代的2-巯基 - 咪唑衍生物作为抗氧化剂,其制备方法和在药物,化妆品或食品工业中的应用

    公开(公告)号:US6056965A

    公开(公告)日:2000-05-02

    申请号:US929069

    申请日:1997-09-15

    CPC classification number: C07D233/84

    Abstract: 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; andY.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.

    Abstract translation: 本发明涉及在4(或5) - 位取代的2-巯基咪唑衍生物。 这些2-巯基咪唑衍生物具有以下通式(I):其中:R 1,R 2,R 5,R 7和R 8是氢,低级烷基,芳烷基或取代的芳烷基,其中R 1和R 2中的至少一个是氢 ; R3是(CH2)nCOR4, - (CH2)nN +(R5R6R7).X-或-CH2CH(COR4)N +(R5R6R7).X-; R4是OR8,-NHR5,-A-氨基酸,-NHCH2CH2SO3-,Y +,-NHCH2CH2CO2-Y +,-OCH2CH2N +(CH3)3.X-; n = 1或2; X31是化妆品,药​​品或食品中可接受的酸的阴离子; Y +是化妆品,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和具有抗氧化活性的药物,化妆品或食品组合物的活性成分是有价值的。

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