PROCESS FOR PREPARATION OF BINARY INDOLALKALOIDS

    公开(公告)号:HU901273D0

    公开(公告)日:1990-05-28

    申请号:HU127390

    申请日:1990-03-02

    Abstract: The present invention relates to a process for the preparation, from e.g. anhydrovinblastine, of binary indole alkaloids effective as an anti-cancer drug, such as vinblastine, leurosidine, etc., wherein a trivalent iron source and hydride source are added in the presence of oxygen, thereby increasing a yield of an object compound. The yield of an object compound is improved still more by further addition, to the reaction system, of an oxalic acid ion source, malonic acid ion source, inorganic anion source, amino acid, etc.

    PROCESS FOR PRODUCING BISZ-INDOLE-ALKALOIDS

    公开(公告)号:HU209687B

    公开(公告)日:1994-10-28

    申请号:HU127390

    申请日:1990-03-02

    Abstract: The present invention relates to a process for the preparation, from e.g. anhydrovinblastine, of binary indole alkaloids effective as an anti-cancer drug, such as vinblastine, leurosidine, etc., wherein a trivalent iron source and hydride source are added in the presence of oxygen, thereby increasing a yield of an object compound. The yield of an object compound is improved still more by further addition, to the reaction system, of an oxalic acid ion source, malonic acid ion source, inorganic anion source, amino acid, etc.

    15.
    发明专利
    未知

    公开(公告)号:DE69002489T2

    公开(公告)日:1993-12-02

    申请号:DE69002489

    申请日:1990-03-05

    Abstract: The present invention relates to a process for the preparation, from e.g. anhydrovinblastine, of binary indole alkaloids effective as an anti-cancer drug, such as vinblastine, leurosidine, etc., wherein a trivalent iron source and hydride source are added in the presence of oxygen, thereby increasing a yield of an object compound. The yield of an object compound is improved still more by further addition, to the reaction system, of an oxalic acid ion source, malonic acid ion source, inorganic anion source, amino acid, etc.

    PROCESS FOR PRODUCING BINARY INDOLEALKALOIDS

    公开(公告)号:HUT54167A

    公开(公告)日:1991-01-28

    申请号:HU127390

    申请日:1990-03-02

    Abstract: The present invention relates to a process for the preparation, from e.g. anhydrovinblastine, of binary indole alkaloids effective as an anti-cancer drug, such as vinblastine, leurosidine, etc., wherein a trivalent iron source and hydride source are added in the presence of oxygen, thereby increasing a yield of an object compound. The yield of an object compound is improved still more by further addition, to the reaction system, of an oxalic acid ion source, malonic acid ion source, inorganic anion source, amino acid, etc.

    PRODUCTION OF AMINOPHENOLS
    20.
    发明专利

    公开(公告)号:JPH07215923A

    公开(公告)日:1995-08-15

    申请号:JP1114294

    申请日:1994-02-02

    Abstract: PURPOSE:To high selectively produce an aminophenol in a high yield by conducting an amination reaction of a divalent phenol in the presence of a mixture of phenol and another phenolic compound other than phenol. CONSTITUTION:In synthesizing an aminophenol of formula III by aminating a divalent phenol of formula I (R is H, a halogen or a lower alkyl) using a compound of formula II (R and R are H, a 1 to 10C alkyl, a 4 to 8C cycloalkyl), this reaction is conducted in the presence of a mixture of phenol and a phenolic compound other than phenol. As the phenol mixture, a mixture composed of phenol and one or more kinds of phenolic compounds selected from a group of cresols, chlorophenols, bromophenols and biphenols is used and a mixture of phenol and a biphenol is especially preferable. As the dihydric phenol of formula I, resorcin or hydroquinone is especially preferable. This aminophenol is useful as an intermediate for synthesis of agricultural and medical drugs and a raw material for pressure-sensitive or heat-sensitive dyes.

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