Intermediates for the preparation of demethylepipodophyllotoxin
    1.
    发明授权
    Intermediates for the preparation of demethylepipodophyllotoxin 失效
    制备去甲表鬼臼毒素的中间体

    公开(公告)号:US5688925A

    公开(公告)日:1997-11-18

    申请号:US441210

    申请日:1995-05-15

    CPC分类号: C07H13/04 C07H17/04 C07H23/00

    摘要: Demethylepipodophyllotoxin-.beta.-glucosides are prepared by allowing demethylepipodophyllotoxin to react with a 2,3-di-O-ester of a 1-O-trialkylsilyl-4,6-O-alkylidene-.beta.-D-glucose derivative in the presence of a Lewis acid. The 4,6-O-alkylidene group can be alkylidene, arylalkylidene, or heteroarylalkylidene and the 2,3-ester can be lower alkanoyl or haloacetyl. In a typical embodiment, demethylepipodophyllotoxin is allowed to react with 4,6-O-ethylidene-2,3-di-O-acetyl-1-O-trimethylsilyl-.beta.-D-glucose in the presence of boron trifluoride etherate to yield etoposide 2",3"-diacetate.

    摘要翻译: 去甲表鬼臼毒素-β-葡糖苷是通过使脱甲基表鬼臼毒素与1-O-三烷基甲硅烷基-4,6-O-亚烷基-β-D-葡萄糖衍生物的2,3-二-O-酯在 路易斯酸。 4,6-亚烷基可以是亚烷基,芳基亚烷基或杂芳基亚烷基,2,3-酯可以是低级烷酰基或卤代乙酰基。 在典型的实施方案中,在三氟化硼乙醚合物的存在下,使甲基表鬼臼毒素与4,6-O-亚乙基-2,3-二-O-乙酰基-1-O-三甲基甲硅烷基-β-D-葡萄糖反应,得到依托泊苷 2“,3” - 二乙酸酯。