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    • 52. 发明公开
    • 신규 다이하이드로 퀴나졸린-2-싸이온 유도체 및 이를 함유한 미백용 조성물
    • 含有这些化合物的新型二氢吲哚啉-2-衍生物和组合物作为有效成分用于发放
    • KR1020110005339A
    • 2011-01-18
    • KR1020090062806
    • 2009-07-10
    • 충남대학교산학협력단충북대학교 산학협력단
    • 정상헌김영수
    • C07D239/72C07D239/93A61K8/49A61P19/02
    • PURPOSE: A dihydroquinazoline-2-thion derivative with an effect of suppressing melanogenesis is provided to effectively suppress pigmentation and to relieve hyperpigmentation. CONSTITUTION: A dihydroquinazoline-2-thion derivative is denoted by chemical formula 1. In chemical formula 1, R1 is -CH3 or -Cl. A composition for preventing or treating hyperpigmentary dermatitis contains dihydroquinazoline-2-thion derivative as an active ingredient. A cosmetic composition for whitening contains dihydroquinazoline-2-thion derivative as an active ingredient. A method for preparing the dihydroquinazoline-2-thion derivative compound comprises: a step of coupling amine compounds with 2-nitrobenzyl chloride derivative or 2-nitrobenzaldehyde derivative to obtain intermediate, 2-nitrobenzyl amine derivative; a step of reducing the nitro group of the intermediate with amino group to convert to 2-amino benzyl amine derivative; a step of reacting the derivative with N,N'-carbonyl diimidazole(CDI) to obtain dihydroquinazoline-2-one derivative; a step of treating the intermediate with a reagent.
    • 目的:提供抑制黑素生成的二氢喹唑啉-2-衍生物,有效抑制色素沉着,缓解色素沉着过度。 构成:二氢喹唑啉-2-衍生物由化学式1表示。在化学式1中,R 1为-CH 3或-Cl。 用于预防或治疗色素沉着过度皮炎的组合物含有二氢喹唑啉-2-衍生物作为活性成分。 用于增白的化妆品组合物含有二氢喹唑啉-2-基衍生物作为活性成分。 制备二氢喹唑啉-2-衍生物化合物的方法包括:将胺化合物与2-硝基苄基氯衍生物或2-硝基苯甲醛衍生物偶联以获得中间体2-硝基苄基胺衍生物的步骤; 用氨基还原中间体的硝基转化成2-氨基苄基胺衍生物的步骤; 使衍生物与N,N'-羰基二咪唑(CDI)反应得到二氢喹唑啉-2-酮衍生物的步骤; 用试剂处理中间体的步骤。