chemo‐enzymatic aerobic oxidation in water of benzylamines to obtain aldehydes or imines is described. Laccasefrom Trametes versicolor was chosen as biocatalyst, and TEMPO (radical 2,2,6,6‐tetramethylpiperidine 1‐oxyl) as mediator. A study on the pH dependence of the aqueousmedium allowed us to realise a fine tuning on product selectivity. Under our optimized reaction conditions, the bio‐oxidation
Synthesis of enantiomerically enriched indolines and tetrahydroisoquinolines from (S)-amino acid-derived chiral carbocations: an easy access to (3S,4R)-demethoxy-3-isopropyl diclofensine
作者:Sudipta Kumar Manna、Gautam Panda
DOI:10.1039/c4ob00922c
日期:——
Enantiomerically enriched indolines and tetrahydroisoquinolines were synthesized within 5 min to 2 h in high yields from easily accessible (S)-amino acid derived chiral carbocations. The diastereoselective Friedel–Crafts reaction is promoted by a Lewis acid (AlCl3) offering trans-diastereoselectivity. The rate of the reaction and diastereoselectivity of the product are significantly influenced by steric
An iterative approach to novel polyamines via nucleophilic ring-opening of aziridinium ions with β-amino alcohols
作者:Christopher McKay、Robert J. Wilson、Christopher M. Rayner
DOI:10.1039/b401447b
日期:——
An iterative procedure for the synthesis of a novel class of synthetic polyamines has been developed, utilising the regioselective ring-opening of aziridinium ion intermediates; facile N-allyl deprotection of intermediate polyamines allows the rapid construction of high molecular weight, stereochemically defined compounds in a convergent manner.
Diastereoselective Intramolecular Allyl Transfer from Allyl Carbamate Accompanied by 5-<i>endo</i>-trig Ring Closure
作者:Oskari K. Karjalainen、Martin Nieger、Ari M. P. Koskinen
DOI:10.1002/anie.201209443
日期:2013.2.25
To All(oc) involved: A palladium‐catalyzed formal 5‐endo‐trig heteroannulation of enones generated in situ from amino acid derived β‐keto nitriles has been realized (see scheme; Alloc=allylcarbamate). The reaction proceeds with allyl‐group transferfrom the carbamate protecting group to generate two new contiguous stereocenters, including one quaternary center, with high selectivity.
[EN] THERAPEUTIC COMPOUNDS AS INHIBITORS OF THE OREXIN-1 RECEPTOR<br/>[FR] COMPOSÉS THÉRAPEUTIQUES UTILISABLES EN TANT QU'INHIBITEURS DU RÉCEPTEUR DE L'OREXINE-1
申请人:C4X DISCOVERY LTD
公开号:WO2016034882A1
公开(公告)日:2016-03-10
The present invention relates to compounds that are inhibitors of the orexin-1 receptor. The compounds have the structural formula I defined herein. The present invention also relates to processes for the preparation of these compounds, to pharmaceutical compositions comprising them, and to their use in the treatment of diseases or disorders associated with orexin-1 receptor activity.