functionalized N-amino-3-nitrile-indole derivatives are obtained via an intramolecular hetero-cyclization of 2-aryl-3-substituted hydrazono-alkylnitriles using FeBr3 as a single electron oxidant. This approach allows the N-moiety on the side-chain to be annulated to the benzene ring during the final synthetic step via direct oxidative aromatic C–N bond formation.
[EN] APELIN RECEPTOR AGONISTS AND METHODS OF USE THEREOF<br/>[FR] AGONISTES DU RÉCEPTEUR DE L'APELINE ET LEURS MÉTHODES D'UTILISATION
申请人:SANFORD BURNHAM PREBYS MEDICAL DISCOVERY INST
公开号:WO2019032720A1
公开(公告)日:2019-02-14
Provided herein are agonists of the apelin receptor for the treatment of disease. The compounds disclosed herein are useful for the treatment of a range of cardiovascular, renal and metabolic conditions.
A catalytic enantioselective synthetic strategy for the aryl-substituted all-carbon quaternary stereocenters of bioactive hydrodibenzofuran alkaloids was achieved by the Michael addition reaction of α-cyano ketones and acrylates using a chiral tertiary amine–thiourea catalyst. This method can tolerate steric bulkiness and multiple functional groups, and 32 Michael adducts were prepared in good to excellent
were prepared fromβ-ketonitriles via a three-step protocol including the protection of the ketones with methoxyamine, oxidative decyanation, and microwave-assisted deprotection in the final step. This approach provides a novel and efficient access to a wide scope of symmetric and unsymmetric 1,2-diketones using molecular oxygen as the oxidant in the decyanation process. β-ketonitriles - oxygen - oxidative
A variety of substituted enamine derivatives were first found to be conveniently converted to the corresponding 2H-azirines mediated by phenyliodine (III) diacetate (PIDA). The formed 2-aryl-2H-azirines could be applied in the synthesis of indole-3-carbonitriles or isoxazoles via thermal rearrangements.