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51 条记录 (耗时 0.02 秒)

    Process for the production of glyceryl ethers
    33.
    发明授权
    Process for the production of glyceryl ethers 失效
    甘油醚的制备方法

    公开(公告)号：US4465869A

    公开(公告)日：1984-08-14

    申请号：US399296

    申请日：1982-07-19

    申请人： Naotake Takaishi ,  Kouichi Urata ,  Yoshiaki Inamoto

    发明人： Naotake Takaishi ,  Kouichi Urata ,  Yoshiaki Inamoto

    IPC分类号： C07C41/00 ,  C07C43/13 ,  C07C43/178 ,  C07C67/00 ,  C07D317/22 ,  C07D317/00

    CPC分类号： C07D317/22

    摘要： The specification describes a process for the production of a 4-alkoxymethyl-1,3-dioxolan in good yield, in high purity and in a simple manner by reacting an alkyl glycidyl ether with a carbonyl compound in the presence of an acid catalyst. The 4-alkoxymethyl-1,3-dioxolan is useful as an intermediate for the production of an .alpha.-monoalkyl glyceryl ether by hydrolysis.

    摘要翻译： 该说明书以高纯度和简单的方式描述了一种通过使烷基缩水甘油醚与羰基化合物在酸催化剂存在下反应生产4-烷氧基甲基-1,3-二氧戊环的方法。 4-烷氧基甲基-1,3-二氧戊环可用作通过水解生产α-单烷基甘油醚的中间体。

    Process for preparing 2-carboxydibenzoylmethanes
    37.
    发明授权
    Process for preparing 2-carboxydibenzoylmethanes 失效
    2-羧基二苯甲酰甲烷的制备方法

    公开(公告)号：US4670585A

    公开(公告)日：1987-06-02

    申请号：US898714

    申请日：1986-08-21

    申请人： Kimihiko Hori ,  Koichi Nakamura ,  Naotake Takaishi

    发明人： Kimihiko Hori ,  Koichi Nakamura ,  Naotake Takaishi

    IPC分类号： C07C65/32 ,  C07C51/00 ,  C07C51/083 ,  C07C51/347 ,  C07C65/34 ,  C07C65/40 ,  C07C67/00 ,  C07C59/84

    CPC分类号： C07C51/347

    摘要： 2-Carboxydibenzoylmethanes of the following formula ##STR1## in which R.sub.1 and R.sub.2 are independently a substituent joined to any position of the benzene nucleus and represent a hydrogen atom, a halogen atom, a linear or branched alkyl or alkenyl group having from 1 to 18 carbon atoms, or a linear or branched, saturated or unsaturated alkoxy group having from 1 to 18 carbon atoms, m is an integer of from 1 to 4, and n is an integer of from 1 to 5 are prepared inexpensively with ease in high yield by a novel process characterized by reaction between phthalic anhydrides and acetophenones in the presence of bases.The 2-carboxydibenzoylmethanes are useful as an inhibitor of the root geotropic response of plants or a growth regulator for plants, or a stabilizer for halogen-containing resins.

    摘要翻译： 下式“IMAGE”的2-羧基二苯甲酰甲烷，其中R 1和R 2独立地是连接到苯核的任何位置并且表示氢原子，卤素原子，具有1至18个碳原子的直链或支链烷基或烯基的取代基 碳原子或具有1至18个碳原子的直链或支链，饱和或不饱和的烷氧基，m为1至4的整数，并且n为1至5的整数，以高产率容易地制备 通过特征在于在碱存在下邻苯二甲酸酐与苯乙酮之间的反应的新方法。 2-羧基二苯甲酰甲烷可用作植物根系地应力反应抑制剂或植物生长调节剂或含卤树脂稳定剂。

    Melanin inhibitor
    39.
    发明授权
    Melanin inhibitor 失效
    黑色素抑制剂

    公开(公告)号：US4978523A

    公开(公告)日：1990-12-18

    申请号：US814172

    申请日：1985-12-24

    申请人： Itsuro Motegi ,  Michio Kawai ,  Genji Imokawa ,  Koichi Nakamura ,  Naotake Takaishi

    发明人： Itsuro Motegi ,  Michio Kawai ,  Genji Imokawa ,  Koichi Nakamura ,  Naotake Takaishi

    IPC分类号： A61K8/02 ,  A61K8/37 ,  A61K8/42 ,  A61K31/165 ,  A61Q19/02

    CPC分类号： A61K8/37 ,  A61K31/165 ,  A61K8/0208 ,  A61K8/42 ,  A61Q19/02 ,  Y10S424/13

    摘要： A melanin inhibitor comprising as the reactive component a cinnamic acid derivative of the formula (I) or (II): ##STR1## in which R' represents an acyl group having 2 to 6 carbon atoms, R.sub.1 represents a hydrogen atom, an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group or an alkenyl group, and R.sub.2 represents a hydrogen atom, an alkyl group having 1 to 24 carbon atoms, a cycloalkyl group or an alkenyl group.The melanin inhibitors according to the invention are locally applied to affected portions such as of freckles and pigmentary deposits after sunburn without giving any stimulative or allergic troubles to the skin.

    摘要翻译： 一种黑色素抑制剂，其包含式（I）或（II）的肉桂酸衍生物作为反应性成分：其中R'表示具有2至6个碳原子的酰基， R1表示氢原子，碳原子数1〜6的烷基，环烷基或烯基，R2表示氢原子，碳原子数1〜24的烷基，环烷基或烯基。 根据本发明的黑色素抑制剂在晒伤后局部应用于诸如雀斑和色素沉积物的受影响部分，而不给皮肤带来任何刺激性或过敏性麻烦。