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    • 2. 发明申请
    • METHOD FOR THE STEREOSELECTIVE SYNTHESIS OF CHIRAL EPOXIDES BY ADH REDUCTION OF KETONES SUBSTITUTED WITH ALPHA STARTING GROUPS AND CYCLISATION
    • 一种通过ADH减持ALPHA启程组酮和环化手性环氧化物立体选择性合成
    • WO2008064817A2
    • 2008-06-05
    • PCT/EP2007010125
    • 2007-11-22
    • ARCHIMICA GMBHMEUDT ANDREASWISDOM RICHARD A
    • MEUDT ANDREASWISDOM RICHARD A
    • C07D303/08
    • C07D303/08
    • The invention relates to a method for producing chiral epoxides by reducing ketones substituted with a-starting groups with cell-free (R)- or (S)-selective alcohol dehydrogenases in the presence of a cofactor, and optionally a suitable system for the regeneration of the oxidised cofactor to form the chiral alcohols, and subsequent base-induced cyclisation to form the chiral epoxides (EQUATION 1) wherein LG can represent F, Cl, Br, I, OSO 2 Ar, OSO 2 R 4 or OP(O)OR 4 R 5 and R 1 , R 2 and R 3 independently represent hydrogen, a branched or unbranched, optionally substituted C 1 -C 20 alkyl radical, an optionally substituted C 3 -C 10 cycloalkyl or alkenyl radical or an optionally substituted carbocyclic or heterocyclic aryl radical or a radical from the group consisting of CO 2 R 4 , CONR 4 R 5 , COSR 4 , CS 2 R 4 , C(NH)NR 4 R 5 , CN, CHaI 3 , OAr, SAr, OR 4 , SR 4 , CHO, OH, NR 4 R 5 , Cl, F, Br, I or SiR 4 R 5 R 6 , where R 4 , R 5 and R 6 independently represent hydrogen, a branched or unbranched, optionally substituted C 1 -C 20 alkyl radical, an optionally substituted C 3 -C 10 cycloalkyl or alkenyl radical or a substituted carbocylic or heterocyclic aryl radical, the intermediately formed chiral alcohol Il not being isolated.
    • 一种用于生产手性环氧化物,通过还原处理的离去基团 - 取代的酮与(R)无细胞 - 或(S) - 选择性醇中的辅因子的存在下脱氢酶,和任选的合适的系统,以再生氧化的辅因子的手性醇与随后的碱诱导的环化 手性环氧化物(式1)其中LG是F,Cl,溴,I,OSO 2 的Ar,OSO 2 - [R 4 或 OP(O)OR 4 - [R 5 是且R 1 ,R 2 和R 3 独立地表示氢,分支或未分支的,任选取代的C 1 -C 20烷基,任选取代的C 3 -C 18烷基, -C 10 的环烷基,或烯基,或任选取代的碳环或杂环芳基或基团选自CO 2 - [R 4 ,CONR 4 R 5 ,COSR 4 ,CS 2 - [R 4 ,C(NH)NR 4 - [R 5 ,CN, 柴 3 ,桨,SAR,OR 4 ,SR 4 ,CHO,OH,NR 4 - [R 5 ,为Cl,F,Br,I或SIR 4 - [R 5 - [R 图6是,其中R 4 ,R 5 和R 6 独立地是氢,支链或无支链,任选取代的C 1 -C 20 烷基,任选取代的C 3 -C 10 象征环烷基,链烯基或取代的碳环或杂环芳基,和手性中间形成的 酒精不是孤立的。