[EN] NOVEL 5 or 8-SUBSTITUTED IMIDAZO [1, 5-a] PYRIDINES AS SELECTIVE INHIBITORS OF INDOLEAMINE AND/OR TRYPTOPHANE 2, 3-DIOXYGENASES<br/>[FR] NOUVELLES IMIDAZO[1,5-A]PYRIDINES SUBSTITUÉES EN POSITION 5 OU 8 EN TANT QU'INDOLEAMINE ET/OU TRYPTOPHANE 2,3-DIOXYGÉNASES
申请人:BEIGENE LTD
公开号:WO2018054365A1
公开(公告)日:2018-03-29
Disclosed herein are 5 or 8-substituted imidazo [1, 5-a] pyridines and pharmaceutical compositions comprising at least one such 5 or 8-substituted imidazo [1, 5-a] pyridines, processes for the preparation thereof, and the use thereof in therapy. Disclosed herein are certain 5 or 8-substituted imidazo [1, 5-a] pyridines that can be useful for inhibiting indoleamine 2, 3-dioxygenase and/or tryptophane 2, 3-dioxygenase and for treating diseases or disorders mediated thereby.
Catalytic Asymmetric Homologation of 4‐Substituted Cyclohexanones with CF
<sub>3</sub>
CHN
<sub>2</sub>
: Enantioselective Synthesis of α
<i>‐</i>
Trifluoromethyl Cycloheptanones
作者:Shu‐Sen Li、Shuo Sun、Jianbo Wang
DOI:10.1002/anie.202115098
日期:2022.2
reaction of cyclic ketones with CF3CHN2 as the trifluoromethylation reagent. This reaction could be applied to construct silicon-stereogenic centers with moderate diastereoselectivities and high enantioselectivities.
The Silicon–Hydrogen Exchange Reaction: A Catalytic σ-Bond Metathesis Approach to the Enantioselective Synthesis of Enol Silanes
作者:Hui Zhou、Han Yong Bae、Markus Leutzsch、Jennifer L. Kennemur、Diane Bécart、Benjamin List
DOI:10.1021/jacs.0c06677
日期:2020.8.12
stoichiometric chiral reagents. We now describe a catalytic approach in which strongly acidic and confined imidodiphosphorimidates (IDPi) catalyze highly enantioselective interconversions of ketones and enol silanes. These “silicon–hydrogen exchange reactions” enable access to enantiopure enol silanes via tautomerizing σ-bond metatheses, either in a deprotosilylative desymmetrization of ketones with allyl
The development of axially chiral dicarboxylicacid catalyzed desymmetrizing asymmetric semipinacol rearrangement of symmetrically substituted six-membered cyclic β-hydroxy-α-diazo esters is reported as a means to give chiral cycloheptanones with good enantioselectivities.
The first catalyticasymmetricFischerindolization is reported. In the presence of a 5 mol % loading of a novel spirocyclic chiral phosphoric acid, 4-substituted cyclohexanone-derived phenylhydrazones undergo a highly enantioselective indolization. Efficient catalyst turnover was achieved by the addition of a weakly acidic cation exchange resin, which removes the generated ammonia. The reaction can