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    • 5. 发明授权
    • Modified lithium aluminum hydrides
    • 改性锂铝氢化物
    • US4338255A
    • 1982-07-06
    • US238136
    • 1981-02-25
    • Shiro TerashimaNorihiko TannoKenji Koga
    • Shiro TerashimaNorihiko TannoKenji Koga
    • C07C43/23C07F5/06
    • C07C43/23C07F5/069
    • Novel modified lithium aluminum hydride type reducing agents obtained by reacting one equivalent of lithium aluminum hydride with one equivalent of an optically active N-substituted ephedrine of the formula, ##STR1## (wherein R.sub.1 is a C.sub.1 -C.sub.4 alkyl group or benzyl group, and Ph is phenyl group)and two equivalents of an N-substituted aniline of the formula, ##STR2## (wherein R.sub.2 is C.sub.1 -C.sub.4 alkyl group or phenyl group, and Ph is phenyl group).This reducing agent is usable for reducing the organic compounds having a carbonyl group (ketone group or aldehyde group) in their structure into the corresponding alcohols. It is particularly useful as a reducing agent for asymmetrically reducing the unsymmetrical ketones to selectively produce either an alcohol in which the asymmetric carbon atom bonded to the hydroxy group is in R-configuration or an alcohol in which said asymmetric carbon atom is in S-configuration.
    • 通过使一当量氢化铝锂与1当量的下式的光学活性N-取代麻黄碱(其中R1是C1-C4烷基或苄基,和 Ph是苯基)和两当量的下式的N-取代的苯胺,其中R 2是C 1 -C 4烷基或苯基,Ph是苯基。 该还原剂可用于将其结构中具有羰基(酮基或醛基)的有机化合物还原成相应的醇。 作为用于不对称地还原不对称酮以选择性地产生其中与羟基键合的不对称碳原子处于R-构型的醇或其中所述不对称碳原子处于S-构型的醇中的还原剂是特别有用的 。
    • 8. 发明授权
    • Process for an anthracycline derivative, and an anthracyclinone
derivative useful for the process
    • 蒽环类衍生物的方法和用于该方法的蒽环类衍生物衍生物
    • US4564674A
    • 1986-01-14
    • US662833
    • 1984-10-19
    • Shiro TerashimaYoshikazu KimuraMichiyo SuzukiTeruyo MatsumotoRumiko Abe
    • Shiro TerashimaYoshikazu KimuraMichiyo SuzukiTeruyo MatsumotoRumiko Abe
    • C07F7/18C07H15/252C07H15/24
    • C07H15/252C07F7/1856
    • A process for producing an anthracycline derivative represented by the general formula: ##STR1## where R.sup.1 is an acyl group, each of X.sup.1 and X.sup.2 is a hydrogen atom, a methoxy group, a hydroxyl group, a halogen atom or a lower alkyl group, each of Y.sup.1 and Y.sup.2 is a hydrogen atom, an alkoxy group or a hydroxyl group, and Z is a hydrogen atom or a protected hydroxyl group, which comprises reacting an anthracyclinone derivative represented by the general formula: ##STR2## where R is a hydrogen atom or a trialkylsilyl group, and X.sup.1, X.sup.2, Y.sup.1, Y.sup.2 and Z are as defined above, with a 1-acyl-sugar derivative represented by the general formula: ##STR3## where R.sup.2 is an acyl group and R.sup.1 is as defined above, in the presence of a silyl sulfonic acid derivative represented by the general formula:R.sup.5 R.sup.4 R.sup.3 SiOSO.sub.2 A (IV)where each of R.sup.3, R.sup.4 and R.sup.5 is an alkyl group and A is an alkyl group, an aryl group, a polyfluoroalkyl group or a hydrogen atom.
    • 一种制备由以下通式表示的蒽环衍生物的方法:其中R1是酰基,其中X1和X2分别是氢原子,甲氧基,羟基,卤原子或低级 烷基,Y 1和Y 2各自为氢原子,烷氧基或羟基,Z为氢原子或被保护的羟基,其包括使由通式(II)表示的蒽环腈衍生物: )其中R是氢原子或三烷基甲硅烷基,X 1,X 2,Y 1,Y 2和Z如上所定义,与通式如下的1-酰基 - 糖衍生物反应:其中R 2为 在通式R5R4R3SiOSO2A(IV)表示的甲硅烷基磺酸衍生物存在下,酰基和R 1如上所定义,其中R3,R4和R5各自为烷基,A为烷基,芳基 基团,多氟烷基或氢原子。