[EN] QUATERNARY PIPERIDINE DERIVATIVES AND USES THEREOF<br/>[FR] DÉRIVÉS QUATERNAIRES DE PIPÉRIDINE ET LEURS UTILISATIONS
申请人:ASTRAZENECA AB
公开号:WO2010071575A1
公开(公告)日:2010-06-24
This invention generally relates to quaternary piperidine compounds, particularly substituted 3-phenylpiperidine compounds and salts thereof. This invention also relates to pharmaceutical compositions comprising such a compound, uses of such a compound (including, for example, treatment methods and medicament preparations), and processes for making such a compound.
A biomimetically guided total synthesis of the Leucetta-derived aminoimidazole alkaloid, calcaridine A, is described. The synthesis relies on position selective metalations of a 4,5-diiodoimidazole derivative to provide a tetrasubstituted imidazole. Subjection of this polysubstituted imidazole derivative to oxidative rearrangement with a Davis oxaziridine provides the corresponding imidazolone core of calcaridine A.
Iron(iii)–salan complexes catalysed highly enantioselective fluorination and hydroxylation of β-keto esters and N-Boc oxindoles
作者:Xin Gu、Yan Zhang、Zhen-Jiang Xu、Chi-Ming Che
DOI:10.1039/c4cc01631a
日期:——
Chiral iron(III)âsalan complexes catalysed highly enantioselective α-fluorination and α-hydroxylation of β-keto esters and N-Boc oxindoles to give the corresponding products in high yields and good-to-excellent ee values under mild reaction conditions.
The mechanism of oxygen atom transfer to tetraphenylporphinato chromic chloride
作者:Lung Chi Yuan、Thomas C. Bruice
DOI:10.1021/ja00288a045
日期:1985.1
On etudie l'effet de la structure donneuse sur la facilite et le mecanisme de transfert d'oxygene
浅谈“氧转移机制”上的“结构效应研究”(Etudie l'effet de la structure donneuse sur la
Asymmetric oxidation of achiral selenides to optically active selenoxides
作者:Franklin A. Davis、Orum D. Stringer、John P. McCauley
DOI:10.1016/s0040-4020(01)96713-4
日期:1985.1
Asymmetric oxidation of methyl phenyl selenide (3), under anhydrous conditions, by chiral 2-sulfonyloxaziridines, 1–2, gives optically active methyl phenyl selenoxide (8.1–9.3% ee). The stereochemistry of the selenoxide is determined by the configuration of the oxaziridine three membered ring with non-bonded steric interactions responsible for the chiral recognition. Asymmetric oxidation of E-phenyl