"> Process for preparation of 4
    11.
    发明授权
    Process for preparation of 4"-deoxyerythromycins A and B 失效
    4“ - 脱氧红霉素A和B的制备方法

    公开(公告)号:US5760198A

    公开(公告)日:1998-06-02

    申请号:US785451

    申请日:1997-01-17

    IPC分类号: C07H17/08 C07H1/00

    CPC分类号: C07H17/08

    摘要: A process for the preparation of 4"-deoxyerythromycins, having the formula: ##STR1## wherein R is H or OH, and R.sup.1 is H or loweralkyl by treatment of the 2'-O-acetyl-4"-imidazolylthionocarbonyl-erythromycin starting material with the radical initiator 4,4'-azobis-(4-cyanovaleric acid), H.sub.3 PO.sub.2 and an organic base in a water-miscible solvent and optionally eliminating the 2'-O-acetyl group. In a preferred embodiment, the water-miscible solvent is an alcohol and the deoxygenation and deacetylation is carried out in one step.

    摘要翻译: 一种制备4'-脱氧红霉素的方法,具有下式:其中R为H或OH,R1为H或低级烷基,通过处理2'-O-乙酰基-4“ - 咪唑硫代羰基 - 红霉素 起始材料与自由基引发剂4,4'-偶氮双(4-氰基戊酸),H 3 PO 2和有机碱在水混溶性溶剂中并任选除去2'-O-乙酰基。 在优选的实施方案中,水混溶性溶剂是醇,脱氧和脱乙酰化在一个步骤中进行。

    3'-N'oxide, 3'-n-dimethylamine, 9-oxime erythromycin a derivatives
    14.
    发明授权
    3'-N'oxide, 3'-n-dimethylamine, 9-oxime erythromycin a derivatives 失效
    3'-硝基氧化物,3'-正二甲胺,9-肟红霉素a衍生物

    公开(公告)号:US5864023A

    公开(公告)日:1999-01-26

    申请号:US800009

    申请日:1997-02-13

    IPC分类号: C07H17/08

    CPC分类号: C07H17/08 Y02P20/55

    摘要: The disclosed invention relates to novel 3'-N-O, 9-O-oxime protected, 6-O-alkyl erthyromycin derivatives, a process of preparing the same. The invention also relates to a process of preparing 6-O-alkyl erythromycin A by eliminating the 3'-N-oxide group and 9-O-oxime protecting groups and optionally deprotecting the hydroxy groups at the 2'- and 4"- positions under suitable reaction conditions.

    摘要翻译: 所公开的发明涉及新的3'-N-O,9-O-肟保护的6-O-烷基红霉素衍生物,其制备方法。 本发明还涉及通过除去3'-N-氧化物基团和9-O-肟保护基团并任选地使2'和4“ - 肟基保护基团上的羟基脱保护来制备6-O-烷基红霉素A的方法, 在合适的反应条件下的位置。