1,4-dihydropyridine derivatives, methods for their production and pharmaceutical compositions comprising the same
申请人:FUJIREBIO KABUSHIKI KAISHA
also trading as FUJIREBIO INC.
公开号:EP0161877A2
公开(公告)日:1985-11-21
1,4-dihydropyridine derivatives having hypotensive action whose time to take effect is long so that blood pressure drops slowly, and whose toxicity is low possess the following general formula
wherein specifically R3 is a combined group formed from an unsaturated straight chain hydrocarbon or derivative thereof with (1) an unsaturated hydrocarbyl group or (2) an aryl or hydroaromatic group. A carbon atom of an unsaturated group of the unsaturated hydrocarbon(s) or a ring carbon atom of the aryl or hydroaromatic group is connected to a carbon atom of an unsaturated group of the unsaturated straight chain hydrocarbon or derivative thereof.
remote functionalizations based on alkene isomerization. In contrast, protocols based on alkyne isomerization are comparatively rare. Herein, we report a general Pd-catalyzed long-range isomerization of alkynyl alcohols. Starting from aryl-, heteroaryl-, or alkyl-substituted precursors, the optimized system provides access preferentially to the thermodynamically more stable α,β-unsaturated aldehydes