Preparation of leurosidine and novel leurosidine 4'-ethers and esters
    4.
    发明授权
    Preparation of leurosidine and novel leurosidine 4'-ethers and esters 失效
    制备leurosidine和新型leurosidine 4 {40-醚和酯

    公开(公告)号:US4075214A

    公开(公告)日:1978-02-21

    申请号:US687274

    申请日:1976-05-17

    IPC分类号: C07D519/04 C07D471/18

    CPC分类号: C07D519/04

    摘要: Vincaleukoblastine (VLB, vinblastine) is converted to leurosidine, its 4' epimer, by reaction with thionyl chloride to form a bis-sulfite ester followed by treatment of the bis-sulfite ester with silver perchlorate. The bis-sulfite ester is covertible to novel 4' ethers by treatment with a lower alkanol or 4' esters of leurosidine perchlorate with acetic anhydride.

    摘要翻译: 通过与亚硫酰氯反应将成纤维细胞生长素(VLB,长春花碱)转化为左啡肽,其4'差向异构体,形成双亚硫酸酯,随后用高氯酸银处理双亚硫酸酯。 双亚硫酸酯可以通过用低级链烷醇或用乙酸酐的高氯酸列萘硫代酯的4'酯处理来形成新的4'醚。