Intramolecular Palladium(II)-Mediated Alkoxy Carbonylation as a Route to Functionalized Tetrahydropyrans. Synthesis of the C9−C32 Segment of Phorboxazole A
作者:James D. White、Christian L. Kranemann、Punlop Kuntiyong
DOI:10.1021/ol010193a
日期:2001.12.1
[reaction: see text] Hydroxy alkene 12, synthesized stereoselectively from 2-methyloxazole-4-carboxaldehyde, underwent intramolecular methoxy carbonylation in the presence of palladium(II) acetate to give 13 in which all five stereogenic centers around the tetrahydropyran correspond to those in ring C of phorboxazole A. Aldehyde 15, derived from 13, was linked to hydroxy alkene 23 via a Wittig coupling
作者:Justin P. Vitale、Scott A. Wolckenhauer、Nga M. Do、Scott D. Rychnovsky
DOI:10.1021/ol051039h
日期:2005.7.1
[reaction: see text]. Three segment-coupling Prins approaches to the C3-C19 segment of phorboxazole B have been developed. One successful strategy utilized a novel TMSBr-mediated cyclization that proceeded with complete axial selectivity. Displacement of bromide with cesium acetate provided the C13 hydroxyl stereocenter of 22. Additionally, treatment of alpha-acetoxy ether 20 with TFA enabled a more
[EN] DIFLUOROETHYL-OXAZOLE SUBSTITUTED BRIDGED SPIRO[2.4]HEPTANE DERIVATIVES AS ALX RECEPTOR AGONISTS<br/>[FR] DÉRIVÉS PONTÉS DE SPIRO[2.4]HEPTANE À SUBSTITUTION DIFLUOROÉTHYL-OXAZOLE EN TANT QU'AGONISTES DU RÉCEPTEUR ALX
申请人:ACTELION PHARMACEUTICALS LTD
公开号:WO2014206966A1
公开(公告)日:2014-12-31
The present invention relates to difluoroethyl-oxazole substituted bridged spiro[2.4] heptane derivatives of formula (I), wherein the substituents at the piperidine ring are in trans-arrangement, their preparation and their use as pharmaceutically active compounds.
DIFLUOROETHYL-OXAZOLE SUBSTITUTED BRIDGED SPIRO[2.4]HEPTANE DERIVATIVES AS ALX RECEPTOR AGONISTS
申请人:Actelion Pharmaceuticals Ltd.
公开号:EP3013817A1
公开(公告)日:2016-05-04
Difluoroethyl-oxazole sustituted bridged spiro[2.4]heptane derivatives as alx receptor agonists
申请人:ACTELION PHARMACEUTICALS LTD
公开号:US20160289221A1
公开(公告)日:2016-10-06
The present invention relates to difluoroethyl-oxazole substituted bridged spiro[2.4] heptane derivatives of formula (I),
wherein the substituents at the piperidine ring are in trans-arrangement, their preparation and their use as pharmaceutically active compounds.