Phenanthridine-n-oxides with pde-iv inhibiting activity
申请人:——
公开号:US20020183350A1
公开(公告)日:2002-12-05
The N-oxides of the compounds of formula (I), in which R1, R2, R3, R31, R4, R5, R51 and R6 have the meanings indicated in the description, arm novel active bronchial therapeutics.
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Organocatalytic Michael Addition/Intramolecular Julia–Kocienski Olefination for the Preparation of Nitrocyclohexenes
作者:Eduardo Rodrigo、José Luis García Ruano、M. Belén Cid
DOI:10.1021/jo401686u
日期:2013.11.1
An asymmetric organocatalytic [3 + 3] annulation strategy based on a Michael addition/intramolecular Julia-Kocienslci olefination sequence has been developed for the synthesis of 4-substituted-5-nitrocyclohex-1-ene compounds. The strategy is an alternative to the direct reluctant enantioselective Diels-Alder approach. The potential of the methodology has been demonstrated with a concise enantioselective formal synthesis of trandolapril.