申请人:J. Uriach & Cia, S.A.
公开号:US04940706A1
公开(公告)日:1990-07-10
The present invention describes novel 2,4-disubstituted 1,3-dioxolanes having the formula I ##STR1## wherein R.sup.1 represents a long chain alkyl group; X is a covalent single bond, a carbonyl group, a carboxyl group, a carbamoyl group or a --O--P(.dbd.O)(O.sup.z)-- group; z is a negative charge (-) when q is zero, or z is an hydrogen atom when q is one; n is an integer from 2 to 10; R.sup.2, R.sup.3 and R.sup.4 are lower alkyl groups, or R.sup.2 R.sup.3 R.sup.4 N.sup.+ represents an aromatic cyclic ammonium group or R.sup.2 R.sup.3 R.sup.4 N.sup.+ represents a non-aromatic cyclic ammonium group in which two of the groups (R.sup.2, R.sup.3 or R.sup.4) form a non-aromatic ring together with the quaternary nitrogen atom; and A.sup.- is a pharmaceutically acceptable anion. These compounds are in vitro inhibitors of the platelet aggregation induced by the platelet activating factor (PAF) and, thus, useful for the treatment of the diseases in which this substance is involved. On the other hand, some of these compounds have hypotensive activity without provoking activation of the platelets.
本发明描述了具有以下式I的新型2,4-二取代-1,3-二氧杂环戊烷化合物:
其中R.sup.1代表长链烷基基团;X是共价键,羰基,羧基,氨基甲酰基或--O--P(.dbd.O)(O.sup.z)--基团;当q为零时,z为负电荷(-),当q为一时,z为氢原子;n为2到10的整数;R.sup.2、R.sup.3和R.sup.4为低碳烷基基团,或R.sup.2 R.sup.3 R.sup.4 N.sup.+代表芳香环铵基团,或R.sup.2 R.sup.3 R.sup.4 N.sup.+代表非芳香环铵基团,其中两个基团(R.sup.2、R.sup.3或R.sup.4)与季铵氮原子一起形成非芳香环;A.sup.-为药用可接受的阴离子。这些化合物是体外抑制血小板活化因子(PAF)诱导的血小板聚集的抑制剂,因此对涉及该物质的疾病的治疗是有用的。另一方面,其中一些化合物具有降压活性,而不引起血小板的激活。