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.
New 4-substituted 2-alkoxytetrahydrofuran derivatives
申请人:J. URIACH & CIA. S.A.
公开号:EP0381098A3
公开(公告)日:1991-03-27
The present invention describes a process to obtain 4-substituted 2-alkoxytetrahydrofuran derivatives of formula I.
wherein,
-R₁ represents an alkyl or phenylalkyl radical; -R₂ is hydrogen, C₁-C₄-acyl or C₁-C₄-alkoxycarbonyl; -R₃ is either an electron pair, in which case t means nothing and q is zero, or R₃ is hydrogen or C₁-C₄-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