(Substituted benzyl)-thio heterocyclic compounds having a leukotriene-antagonist activity
申请人:YAMANOUCHI PHARMACEUTICAL CO. LTD.
公开号:EP0214732A2
公开(公告)日:1987-03-18
Heterocyclic compound of formula (I) and salts thereof are SRS-A antagonists:
wherein R' is a C1 to C8 acyl group; R2 is a C1 to Ca alkyl group; Het- is a 5- or 6-membered heterocyclic ring which contains 1 to 3 nitrogen atoms and may additionally contain a sulfur atom or an oxygen atom; R3 is a carboxy group, an amino group, a C1 to C8 alkylamino group which may be carboxy-substituted, a C, to C8 alkanoylamino group which may be carboxy-substituted, a di-(C1-C8 alkyl) amino group, a hydroxy group, a C1 to C8 alkoxy group which may be carboxy-substituted, a mercapto group, a C1-C8 alkylthio group which may be carboxy-substituted, a group of formula:
or formula:
(wherein p is integer of 1 to 5, q is 0, 1 or 2, r is an integer of 1 to 5; R4 is a carboxy group, a C1-C8 alkoxy group which may be carboxy-substituted or a C1-C8 alkyl group which may be carboxy-substituted and optionally additionally contain a sulfur atom or an oxygen atom in the carbon chain thereof); and n is 0 or an integer of to 3; provided that when the compound is substituted by a carboxy group, said carboxy group may be in the form of an ester, and when n is 2 or 3 different R3's is may be present.
式 (I) 的杂环化合物及其盐类是 SRS-A 拮抗剂:
其中 R' 是 C1 至 C8酰基;R2 是 C1 至 Ca烷基;Het- 是 5 或 6 元杂环,含有 1 至 3 个氮原子,还可能含有一个硫原子或一个氧原子;R3 是羧基、氨基、可被羧基取代的 C1 至 C8 烷基氨基、可被羧基取代的 C1 至 C8 烷酰氨基、二(C1-C8 烷基)氨基、羟基、可被羧基取代的 C1 至 C8 烷氧基、巯基、可被羧基取代的 C1-C8 烷硫基、式中的基团:
或式
(其中 p 为 1 至 5 的整数,q 为 0、1 或 2,r 为 1 至 5 的整数;R4 为羧基、可被羧基取代的 C1-C8 烷氧基或可被羧基取代的 C1-C8 烷基,并可选择在其碳链中额外含有一个硫原子或一个氧原子);且 n 为 0 或 3 的整数;但当化合物被羧基取代时,所述羧基可以是酯的形式,且当 n 为 2 或 3 时,可以存在不同的 R3。