Organic compounds and compositions of ara-cytidine
    72.
    发明授权
    Organic compounds and compositions of ara-cytidine 失效
    有机化合物和ARA-CYTIDINE的组合物

    公开(公告)号:US4145414A

    公开(公告)日:1979-03-20

    申请号:US832965

    申请日:1977-09-13

    IPC分类号: C07H19/06 C07H17/00 A61K31/70

    摘要: 5'-Esters of ara-cytidine (1-.beta.-D-arabinofuranosylcytosine) are prepared by reacting ara-cytidine with .beta.,.beta.,.beta.-trihaloethoxycarbonyl halide or other protective agency to form a protective amido group on the primary amino nitrogen of ara-cytidine and then reacting the thus-protected compound with a reagent reactive with the 5'-O-hydroxyl group, e.g., an acylating agent, to form the 5'-O-derivative. The .beta.,.beta.,.beta.-trihaloethoxycarbonyl or other protective group is then removed. Alternately, the primary amino group of ara-cytidine can be protected from acylation by protonation. The 5'-O-derivatives in their free base or salt form are characterized in that they display the property of sustained release of the compound, ara-cytidine, when administered intramuscularly or subcutaneously. Ara-cytidine is known for its anti-viral action and for its usefulness as an agent for controlling leukemias, including acute leukemia, and the sustained release property extends the usefulness of ara-cytidine for these purposes and as an immunosuppressive agent. The 5'-O-derivatives of this invention can also be administered orally.

    4.alpha.-Hydroxy-6-oxo-2.beta.-
arylmethoxy-methyl-3.alpha.-tetrahydropyranacetic acid .gamma.-lactones
    73.
    发明授权
    4.alpha.-Hydroxy-6-oxo-2.beta.- arylmethoxy-methyl-3.alpha.-tetrahydropyranacetic acid .gamma.-lactones 失效
    4 {60-羟基-6-氧代-2 {62-芳基甲氧基 - 甲基-3 {60-四氢吡喃乙酸{65-内酯

    公开(公告)号:US4094884A

    公开(公告)日:1978-06-13

    申请号:US784173

    申请日:1977-04-04

    申请人: Robert C. Kelly

    发明人: Robert C. Kelly

    摘要: The present specification provides novel intermediates and novel processes for the synthesis of Thromboxane B.sub.2 (11a-homo-11a-oxa-PGF.sub.2.alpha.), its 15-epimer, and various carboxyl derivatives thereof. In particular, there are disclosed various bicyclic tetrahydrofuran-containing lactones useful in the above processes, and corresponding acyclic lactones.

    摘要翻译: 本说明书提供了用于合成血栓烷B2(11a-homa-11a-oxa-PGF2α),其15-差向异构体及其各种羧基衍生物的新型中间体和新方法。 特别地,公开了可用于上述方法的各种双环四氢呋喃内酯,以及相应的无环内酯。