3,5-Disubstituted tetrahydrofuran-2-ones
    9.
    发明授权
    3,5-Disubstituted tetrahydrofuran-2-ones 失效
    3,5-二取代四氢呋喃-2-酮

    公开(公告)号:US5606078A

    公开(公告)日:1997-02-25

    申请号:US416237

    申请日:1995-04-04

    摘要: Compounds of formula I ##STR1## wherein R.sub.1 is free or esterified carboxy, hydroxymethyl or formyl,R.sub.2 and R.sub.4 are each independently of the other aliphatic, cycloaliphatic-aliphatic, araliphatic or heteroarylaliphatic radicals andR.sub.3 is azido, or amino that is aliphatically or araliphatically substituted and/or protected by an amino-protecting group,and the salts thereof, are valuable intermediates in the preparation of medicinal active ingredients, for example of compounds of formula II ##STR2## wherein R.sub.A is an aromatic or heteroaromatic radical,R.sub.2 and R.sub.4 are each independently of the other aliphatic, cycloaliphatic, cycloaliphaticaliphatic or araliphatic radicals,R.sub.3 is unsubstituted or N-mono- or N,N-di-lower alkylated or N-lower alkanoylated amino, andR.sub.B is an aliphatically, cycloaliphatically or heteroaromatically-aliphatically substituted amino group,and the salts thereof, which can be used, for example, as antihypertensives.

    摘要翻译: 式I的化合物其中R 1是游离的或酯化的羧基,羟甲基或甲酰基,R 2和R 4各自独立地是其它脂族,脂环族 - 脂族,芳脂族或杂芳基脂族基,R 3是叠氮基或氨基, 通过氨基保护基团及其盐的脂质或芳香取代和/或保护是制备药物活性成分的有价值的中间体,例如式II化合物(IIb)(IIb) 其中RA是芳族或杂芳族基团,R 2和R 4各自独立地为其它脂族,脂环族,脂环族或芳脂族基团,R3是未取代的或N-单或N,N-二低级烷基化或N-低级烷酰基氨基 ,RB是脂肪,脂环或杂芳基 - 脂族取代的氨基及其盐,其可用作例如抗高血压药。