Recovery of AZT by guanidine precipitation
    1.
    发明授权
    Recovery of AZT by guanidine precipitation 失效
    通过胍沉淀回收AZT

    公开(公告)号:US5387677A

    公开(公告)日:1995-02-07

    申请号:US914104

    申请日:1992-07-16

    CPC分类号: C07H19/06

    摘要: A process for recovering 3'-azido-3'-deoxythymidine (AZT) or a salt thereof from a mixture of chemicals involving the reaction of the AZT with guanidine to form a salt precipitate. The salt precipitate is then acidified to pH of less than about 9 to yield free AZT, which can then be crystallized from solution. 3'-Azido-3'-deoxythymidine and its salts, also known as AZT and Zidovudine, is used in the treatment of AIDS patients.

    摘要翻译: 从涉及AZT与胍反应形成盐沉淀物的化合物混合物中回收3'-叠氮基-3'-脱氧胸苷(AZT)或其盐的方法。 然后将盐沉淀物酸化至小于约9的pH以产生游离的AZT,然后可以从溶液中结晶。 3'-叠氮基-3'-脱氧胸苷及其盐,也称为AZT和齐多夫定,用于治疗AIDS患者。

    Complex of guanidine and AZT
    4.
    发明授权
    Complex of guanidine and AZT 失效
    胍和AZT的复合物

    公开(公告)号:US5519129A

    公开(公告)日:1996-05-21

    申请号:US326854

    申请日:1994-10-21

    CPC分类号: C07H19/06

    摘要: A composition of a 1:1 molar complex of guanidine and 3'-azido-3'-deoxythymidine (AZT) which is generated at about pH above 9 and disrupted by pH below about 9. This complex is a useful intermediate in the purification of AZT.

    摘要翻译: 胍和3'-叠氮基-3'-脱氧胸苷(AZT)的1:1摩尔配合物的组合物,其在约pH大于9时产生并且通过pH低于约9被破坏。该复合物是纯化中的有用中间体 AZT。

    Organosulfonyl salts of 2,3'-O-cyclocytidine
    5.
    发明授权
    Organosulfonyl salts of 2,3'-O-cyclocytidine 失效
    2,3'-O-环胞苷的有机磺酰基盐

    公开(公告)号:US5536824A

    公开(公告)日:1996-07-16

    申请号:US356498

    申请日:1994-12-15

    CPC分类号: C07H23/00 C07H19/06

    摘要: Compounds of Formula IV: ##STR1## are described. In the compounds of Formula IV, R.sup.6 is selected from a trifluoromethyl group, a C.sub.1 -C.sub.6 alkyl group and a C.sub.6 -C.sub.9 aryl group, and R.sup.1 is selected from hydrogen, trityl, methoxytrityl, dimethoxytrityl, acetyl, a C2-C6 alkylacyl group, a C6-C9 arylacyl group, allyl, 2,2,2-trichloroethyl, phosphates and salts thereof, tosyl and mesyl. The above organosulfonyl salts of 2,3'-O-cyclocytidine are intermediates in the preparation of 1-(B-D-xylopentofuranose)cytosine, an inhibitor of DNA synthesis.

    摘要翻译: 描述式IV化合物:图像(IV)。 在式IV化合物中,R 6选自三氟甲基,C 1 -C 6烷基和C 6 -C 9芳基,R 1选自氢,三苯甲基,甲氧基三苯甲基,二甲氧基三苯甲基,乙酰基,C 2 -C 6烷基酰基 C6-C9芳基酰基,烯丙基,2,2,2-三氯乙基,磷酸及其盐,甲苯磺酰和甲磺酰。 上述2,3'-O-环胞苷的有机磺酰基盐是制备DNA合成抑制剂1-(B-D-木酮呋喃糖)胞嘧啶的中间体。

    Process for preparing 2,3'-O-cyclocytidine
    6.
    发明授权
    Process for preparing 2,3'-O-cyclocytidine 失效
    制备2,3'-O-环胞苷的方法

    公开(公告)号:US5399682A

    公开(公告)日:1995-03-21

    申请号:US930605

    申请日:1992-10-05

    CPC分类号: C07H23/00 C07H19/06

    摘要: A process for preparing 2,3'-O-cyclocytidine wherein 3'-deoxy-3'-organosulfonyl cytidine is refluxed in the absence of base. 2,3'-cyclocytidine is an intermediate in the preparation of 1-(B-D-xylo-pentofuranose) cytosine, an inhibitor of DNA synthesis.

    摘要翻译: PCT No.PCT / CA91 / 00078 Sec。 371日期:1992年10月5日 102(e)日期1992年10月5日PCT 1991年3月13日PCT公布。 公开号WO91 / 13901 1991年9月19日。一种制备2,3'- O-环胞苷的方法,其中3'-脱氧-3'-有机磺酰基胞苷在不存在碱的情况下回流。 2,3'-环胞苷是制备1-(B-D-木糖 - 戊呋糖)胞嘧啶的中间体,其是DNA合成的抑制剂。

    Process for the preparation of substantially pure stavudine and related intermediates useful in the preparation thereof
    10.
    发明授权
    Process for the preparation of substantially pure stavudine and related intermediates useful in the preparation thereof 失效
    制备基本上纯粹的司他夫定及其制备中有用的中间体的方法

    公开(公告)号:US06635753B1

    公开(公告)日:2003-10-21

    申请号:US09163321

    申请日:1998-09-30

    IPC分类号: C07H19073

    CPC分类号: C07H19/06

    摘要: There are disclosed novel Stavudine solvates as follows: Stavudine NN-dimethyllacetamide solvates; Stavudine NN-dimethylacrylamide solvates and Stavudine NN-dimethylpropionamide solvates and processes for producing Stavudine NN-dimethylacetamide solvates, Stavudine NN dimethylacrylamide solvates and Stavudine NN dimethylpropionamide solvates which results in pure Stavudine.

    摘要翻译: 公开了新的司他夫定溶剂合物如下:司他夫定NN-二甲基乙酰胺溶剂合物; 司他夫定NN-二甲基丙烯酰胺溶剂化物和司他夫定NN-二甲基丙酰胺溶剂化物和用于生产司他夫定NN-二甲基乙酰胺溶剂合物,司他夫定NN二甲基丙烯酰胺溶剂合物和司他夫定NN二甲基丙酰胺溶剂化物的方法,其产生纯的司他夫定。