1,1-bis(heteroazolyl)alkane derivatives and their use as neuroprotective
申请人:——
公开号:US05665747A1
公开(公告)日:1997-09-09
The present invention relates to novel heterocyclic compounds having the general formula (1) ##STR1## wherein: X.sub.1 and X.sub.2 are independently O, S or Se; Y.sub.1 and Y.sub.2 are independently C or N with the proviso that at least one of Y.sub.1 and Y.sub.2 is N; Y.sub.3 and Y.sub.4 are independently C or N with the proviso that at least one of Y.sub.3 and Y.sub.4 is N; R.sub.1 and R.sub.2 each represent one or more groups independently selected from H, lower alkyl, lower alkoxy-lower alkyl, hydroxy-lower alkyl, lower acyloxy-lower alkyl or CF.sub.3 ; and A is ##STR2## geometrical and optical isomers and racemates thereof where such isomers exist, as well as pharmaceutically acceptable acid addition salts thereof and solvates thereof; having therapeutic activity, processes and intermediates for their preparation, pharmaceutical formulations containing said compounds and the medicinal use of said compounds.
1, 1-BIS (heteroazolyl) alkane derivatives and their use as
申请人:Astra Aktiebolag
公开号:US05843971A1
公开(公告)日:1998-12-01
The present invention relates to novel heterocyclic compounds having the general formula (1) ##STR1## wherein: X.sub.1 and X.sub.2 are independently O, S or Se; Y.sub.1 and Y.sub.2 are independently C or N with the proviso that at least one of Y.sub.1 and Y.sub.2 is N; Y.sub.3 and Y.sub.4 are independently C or N with the proviso that at least one of Y.sub.3 and Y.sub.4 is N; R.sub.1 and R.sub.2 each represent one or more groups independently selected from H, lower alkyl, lower alkoxy-lower alkyl, hydroxy-lower alkyl, lower acyloxy-lower alkyl or CF.sub.3 ; and A is ##STR2## geometrical and optical isomers and racemates thereof where such isomers exist, as well as pharmaceutically acceptable acid addition salts thereof and solvates thereof; having therapeutic activity, processes and intermediates for their preparation, pharmaceutical formulations containing said compounds and the medicinal use of said compounds.
A facile method of trifluoroacylation of imidazoles, 1,3-thiazoles, and 1,3-oxazoles with trifluoroacetic anhydride resulted in a set of heterocyclic trifluoromethyl-containing ketones. Unlike common ketones, these compounds form stable hydrates and enter into noncatalytic ene reactions with terminal olefins affording the corresponding allyl alcohols.