Fluorinated aromatic polyenes
    4.
    发明授权
    Fluorinated aromatic polyenes 失效
    氟化芳族多烯

    公开(公告)号:US4137246A

    公开(公告)日:1979-01-30

    申请号:US809738

    申请日:1977-06-24

    摘要: Compounds represented by the formula ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are lower alkyl, R.sub.4 is lower alkoxy, R.sub.6 and R.sub.8 are methyl or trifluoro methyl, R.sub.9 is formyl, hydroxymethyl, alkoxymethyl, alkanoyloxymethyl, carboxyl, alkoxycarbonyl, lower alkenoxycarbonyl, lower alkynoxycarbonyl, carbamoyl, mono(lower alkyl)-carbamoyl, di(lower alkyl)carbamoyl or N-heterocyclylcarbonyl, R.sub.5, R.sub.7, R.sub.10, R.sub.11 R.sub.12 and R.sub.13 are hydrogen or fluorine with the proviso that at least one of R.sub.5, R.sub.7, R.sub.10, R.sub.11, R.sub.12 or R.sub.13 is fluorine or at least one of R.sub.6 or R.sub.8 is trifluoro methyl,Or pharmaceutically acceptable salts thereof useful as antitumor agents are disclosed.

    摘要翻译: 由下式表示的化合物其中R1,R2和R3为低级烷基,R4为低级烷氧基,R6和R8为甲基或三氟甲基,R9为甲酰基,羟甲基,烷氧基甲基,烷酰氧基甲基,羧基,烷氧基羰基,低级链烯氧基羰基,低级 炔基羰基,氨基甲酰基,单(低级烷基) - 氨基甲酰基,二(低级烷基)氨基甲酰基或N-杂环基羰基,R5,R7,R10,R11,R12和R13为氢或氟,条件是R5,R7, ,R11,R12或R13为氟,R6或R8中的至少一个为三氟甲基,或作为抗肿瘤药物有用的药物可接受的盐。

    Claisen intermediates
    10.
    发明授权
    Claisen intermediates 失效
    克莱森中间体

    公开(公告)号:US4100175A

    公开(公告)日:1978-07-11

    申请号:US777808

    申请日:1977-03-15

    IPC分类号: C07D311/72

    CPC分类号: C07D311/72

    摘要: A total asymmetric synthesis for producing optically active vitamin E, from 2,5,7,8-tetramethylchroman-2-acetaldehyde including intermediates in this synthesis.

    摘要翻译: 用于从2,5,7,8-四甲基苯并二氢吡喃-2-乙醛生产光学活性维生素E的全不对称合成,包括该合成中的中间体。