申请人:J. Uriach & CIA. S.A.
公开号:US04980362A1
公开(公告)日:1990-12-25
The present invention describes a process to obtain 4-substituted 2-alkoxytetrahydrofuran derivatives of formula I, ##STR1## wherein, --R.sub.1 represents an alkyl or phenylalkyl radical; --R.sub.2 is hydrogen, C.sub.1 -C.sub.4 -acryl or C.sub.1 -C.sub.4 -alkoxycarbonyl; --R.sub.3 is either an electron pair, in which case t means nothing and q is zero, or R.sub.3 is hydrogen or C.sub.1 -C.sub.4 alkyl, in which case t is (+) and q=1; A- is a pharmaceutically acceptable anion. These compounds are antagonists of PAF and, therefore, useful for the treatment of the diseases in which this substance is involved.
本发明描述了一种获得式I的4-取代2-烷氧基四氢呋喃衍生物的过程,其中,--R.sub.1代表烷基或苯基烷基基团;--R.sub.2是氢,C.sub.1-C.sub.4-丙烯酰基或C.sub.1-C.sub.4-烷氧羰基;--R.sub.3可以是电子对,此时t表示为零,q为零,或者R.sub.3是氢或C.sub.1-C.sub.4烷基,此时t为(+),q=1;A-是一种药用可接受的阴离子。这些化合物是PAF的拮抗剂,因此对涉及该物质的疾病的治疗是有用的。