Stereoselective synthesis of 1-.beta.-alkyl carbapenem antibiotic
intermediates
    4.
    发明授权
    Stereoselective synthesis of 1-.beta.-alkyl carbapenem antibiotic intermediates 失效
    1-β-烷基碳青霉烯类抗生素中间体的立体选择性合成

    公开(公告)号:US4841043A

    公开(公告)日:1989-06-20

    申请号:US81054

    申请日:1987-08-03

    IPC分类号: C07D205/08 C07F7/18

    摘要: There is disclosed a process for producing carbapenam diazo intermediates of the formula ##STR1## wherein R.sup.1 is hydrogen or a hydroxy-protecting group,R.sup.2 is a lower alkyl having from 1-6 carbon atoms, andR.sup.3 represents a conventional carboxyl-protecting group.The processs comprises alkylating a 4-substituted azetidinone with the tin enolate of an .alpha.-bromoketone, in the presence of a silver salt, iodine, or iodine salt as a catalyst, and a strongly polar solvent. The .beta./.alpha. yield of the product diazo intermediate is approximately 3/1.

    摘要翻译: 公开了一种制备式(VI)的碳青霉素重氮中间体的方法,其中R1是氢或羟基保护基,R2是具有1-6个碳原子的低级烷基,R3代表常规的羧基保护基 。 该方法包括在作为催化剂的银盐,碘或碘盐和强极性溶剂的存在下,用α-溴酮的烯醇化锡烷基化4-取代的氮杂环丁酮。 产物重氮中间体的β/α产率约为3/1。

    Anti-viral 7-deaza D-nucleosides and uses thereof
    7.
    发明申请
    Anti-viral 7-deaza D-nucleosides and uses thereof 审中-公开
    抗病毒7-脱氮D-核苷及其用途

    公开(公告)号:US20050026853A1

    公开(公告)日:2005-02-03

    申请号:US10627586

    申请日:2003-07-25

    CPC分类号: C07H19/00 C07H19/22

    摘要: The present invention relates generally to anti-viral compounds, particularly anti-viral 7-deaza D-nucleosides and analogues, or derivatives thereof. The invention also relates to the use of such compounds to treat or prevent hepatitis B virus (HBV) infections, and to the use of such compounds to examine the biological mechanisms of HBV infection.

    摘要翻译: 本发明一般涉及抗病毒化合物,特别是抗病毒7-脱氮D-核苷及其类似物或其衍生物。 本发明还涉及这种化合物用于治疗或预防乙型肝炎病毒(HBV)感染的用途,以及使用这些化合物来检查HBV感染的生物学机制。