Polycyclic cyanoketones
    1.
    发明授权
    Polycyclic cyanoketones 失效
    多环氰基酮

    公开(公告)号:US4395423A

    公开(公告)日:1983-07-26

    申请号:US100983

    申请日:1979-12-06

    申请人: Helmut C. Neumann

    发明人: Helmut C. Neumann

    摘要: (18.beta. and 18.alpha.)-2.alpha.-Cyano-3,11-dioxo-olean-12-en-29-oic acids and lower-alkyl esters thereof, useful as ulcer preventing and ulcer healing agents, are prepared from 18.beta.- or 18.alpha.-glycyrrhetinic acid, the final step being alkaline cleavage of 18.beta.- or 18.alpha.-11-oxo-olean-2,12-dieno[2,3-d]isoxazol-29-oic acid or an ester thereof.

    摘要翻译: (18β和18α)-2α-链烷酰基-3,11-二氧代 - 烯烃-12-烯-29-酸及其低级烷基酯,其可用作预防溃疡和溃疡愈合剂,由18β - 或18α-甘草次酸,最后一步是18β-或18α-11-氧代 - 油an -2,12-二烯[2,3-d]异恶唑-29-酸或其酯的碱切割 。