申请人:Merck & Co., Inc.
公开号:US04337258A1
公开(公告)日:1982-06-29
2,4-Dioxo-4-substituted-1-butanoic acid derivatives of the formula: ##STR1## where R is hydrogen or C.sub.1-4 alkyl; and L is a lipophilic group consisting essentially of (1) ##STR2## where R' is (a) hydrogen; (b) C.sub.1-3 alkyl; (c) benzyl; (d) pyridyl C.sub.1-3 alkyl; or (e) (3,4-dihydro-3-hydroxy-2H-1,5-benzodioxepin-3-yl) methyl; provided that positions 2 and 6 of the substituted phenyl moiety may not be substituted; or (2) ##STR3## where R' has the same meaning as above; or a pharmaceutically acceptable salt thereof; useful in treating urinary tract, especially renal calcium oxalate lithiasis.
2,4-二氧代-4-取代-1-丁酸衍生物,其通式为:##STR1##其中R为氢或C1-4烷基;L为亲脂性基团,主要由以下两种结构组成:(1) ##STR2##其中R'为(a)氢;(b) C1-3烷基;(c)苄基;(d)吡啶基C1-3烷基;或(e) (3,4-二氢-3-羟基-2H-1,5-苯并二氧杂环庚三烯-3-基)甲基;但取代苯基部分的2位和6位不得被取代;或(2) ##STR3##其中R'与上述含义相同;或其药学上可接受的盐;用于治疗泌尿系统疾病,尤其是肾钙性草酸钙结石。