Stereoselective synthesis of nucleoside analogues using bicyclic
intermediate
    41.
    发明授权
    Stereoselective synthesis of nucleoside analogues using bicyclic intermediate 失效
    使用双环中间体的核苷类似物的立体选择性合成

    公开(公告)号:US5763606A

    公开(公告)日:1998-06-09

    申请号:US379644

    申请日:1995-02-02

    摘要: The present invention relates to a process for producing predominantly pure cis nucleoside analogues of formula (I), wherein X is S, or O; Y is S, CH.sub.2, O or CH(R); wherein R is azido or halogen; and R.sub.2 is a purine or pyrimidine base; via the coupling of a silylated purine or pyrimidine base in the presence of an appropriate Lewis acid with a bicyclic intermediate of formula (III) wherein Z is S or O; followed by conversion of the resulting intermediate of formula (II) to an alkyl ester and reduction to yield a compound of formula (I). ##STR1##

    摘要翻译: PCT No.PCT / CA94 / 00311 Sec。 371日期:1995年2月2日 102(e)1995年2月2日PCT PCT 1994年6月7日PCT公布。 WO94 / 29301 PCT出版物 1994年12月22日的日本本发明涉及一种主要生产式(I)的纯顺式核苷类似物的方法,其中X是S或O; Y是S,CH 2,O或CH(R); 其中R是叠氮基或卤素; R2是嘌呤或嘧啶碱基; 通过甲硅烷基化的嘌呤或嘧啶碱在合适的路易斯酸与式(III)的双环中间体(其中Z是S或O)的偶联; 然后将得到的式(II)中间体转化成烷基酯并还原,得到式(I)化合物。 (一)图像(二)<图像>(三)

    Trithiabicyclo[2,2,2]octanes
    43.
    发明授权
    Trithiabicyclo[2,2,2]octanes 失效
    三硫杂双环[2,2,2]辛烷

    公开(公告)号:US5371075A

    公开(公告)日:1994-12-06

    申请号:US921056

    申请日:1992-07-29

    摘要: Bicyclo-[2,2,1]-heptanes, bicyclo-[2,2,2,]-octanes and bicyclo-[2,2,3]-nonanes having 2 or 3 ring hetero atoms selected from O, S and N, substituted at the 1-position by a 4-alkynylphenyl group and at the 4-position and optionally at the 3 and/or 5-position are valuable pesticides, particularly insecticides and acaracides. The compounds may be prepared by reacting an alkyne with the corresponding 4-iodophenyl substituted compound or by debromination of the corresponding 4-dibromomethylphenyl substituted compound.

    摘要翻译: 具有2或3个选自O,S和N的环杂原子的双环 - [2,2,1] - 庚烷,双环 - [2,2,2] - 辛烷和双环 - [2,2,3] - 壬烷 在4-位被4-炔基苯基取代,在4位和任选在3位和/或5位被取代是有价值的农药,特别是杀虫剂和吖啶。 化合物可以通过使炔与相应的4-碘苯基取代的化合物反应或通过相应的4-二溴甲基苯基取代的化合物的脱溴来制备。

    Pesticidal compounds
    44.
    发明授权
    Pesticidal compounds 失效
    杀虫化合物

    公开(公告)号:US5157029A

    公开(公告)日:1992-10-20

    申请号:US739842

    申请日:1991-08-02

    摘要: Bicyclo-[2,2,1]-heptanes, bicyclo-[2,2,2]-octanes and bicyclo-[2,2,3]-nonanes having 2 or 3 ring hetero atoms selected from O, S and N, substituted at the 1-position by a 4-alkynylphenyl group and at the 4-position and optionally at the 3 and/or 5-position are valuable pesticides, particularly insecticides and acaracides. The compounds may be prepared by reacting an alkyne with the corresponding 4-iodophenyl substituted compound or by debromination of the corresponding 4-dibromomethylphenyl substituted compound.

    摘要翻译: 具有2或3个选自O,S和N的环杂原子的双环 - [2,2,1] - 庚烷,双环 - [2,2,2] - 辛烷和双环 - [2,2,3] 在4-位被4-炔基苯基取代,4-位和任选在3和/或5位是有价值的杀虫剂,特别是杀虫剂和杀螨剂。 化合物可以通过使炔与相应的4-碘苯基取代的化合物反应或通过相应的4-二溴甲基苯基取代的化合物的脱溴来制备。