Tricyclic compounds, a process for their preparation and pharmaceutical compositions containing them
申请人:Casara Patrick
公开号:US20080188460A1
公开(公告)日:2008-08-07
Compounds of formula (I):
wherein
A represents a 5, 6 or 7-membered (hetero)aromatic or non-aromatic ring,
n and n′ represent 0, 1 or 2
X represents an alkylene chain as defined in the description,
R
3
represents an aryl or heteroaryl group,
one of the groups R
1
and R
2
represents a hydrogen atom and the other represents a group of formula (II) as defined in the description.
Medicinal products containing the same which are useful in treating conditions involving a defect in apoptosis.
Enantioselective aldol chemistry via alkyl enol ethers. Scope of the Lewis acid catalyzed condensation of optically active trimethylsilyl and methyl 2-[(E)-1-alkenyloxy]ethanoates with acetals
作者:James A. Faunce、Bryan A. Grisso、Peter B. Mackenzie
DOI:10.1021/ja00009a029
日期:1991.4
Optically active, mono- and disubstituted trimethylsilyl 2-[(E)-1-alkenyloxy]ethanoates of the type RR 1 CH=CHOCHR 2 CO 2 SiMe 3 (R=Me, PhCH 2 , n-Bu, MeO 2 CCMe 2 CH 2 , PhSCH 2 ; R 1 =H, Me; R 2 =Me, c-C 6 H 11 ) undergo highly dioastereoselective, Lewis acid catalyzed reactions with aliphatic and aromatic acetals R 3 CH(OR 4 ) 2 (R 3 =H, Me, t-Bu, Ph; R 4 =Me, CH 2 Ph) to afford cis-2-[RR 1 CH(R
RR 1 CH=CHOCHR 2 CO 2 SiMe 3 (R=Me, PhCH 2 , n-Bu, MeO 2 CCMe 2 CH) 类型的旋光单和二取代三甲基甲硅烷基 2-[(E)-1-烯氧基]乙酸酯2 , PhSCH 2 ; R 1 =H, Me; R 2 =Me, cC 6 H 11 ) 与脂肪族和芳香族缩醛 R 3 CH(OR 4 ) 2 (R 3 =H, Me) 发生高度对映选择性的路易斯酸催化反应, t-Bu, Ph; R 4 =Me, CH 2 Ph) 得到 cis-2-[RR 1 CH(R 3 CHOR 4 )]-5-R 2 -1,3-二氧戊环酮,对应于赤型非对映选择性醛醇涉及缩醛衍生的亲电子试剂和三甲基甲硅烷基酯氧跨烯醇醚双键的净顺面加成反应
Enantioselective Organocatalytic Aldol Reaction of Ynones and Its Synthetic Applications
[Structure: see text] For the first time, unmodified ynones were used in organocatalytic asymmetric aldol reactions delivering monoprotected anti-alpha,beta-dihydroxyynones in high yields, dr's up to 19:1, and ee's up to 95%. These products can be either reduced to afford enantioenriched unsaturated anti,anti-triol or cyclized using a novel intramolecular phosphine-catalyzed alpha-addition to the ynone
[EN] INHIBITORS OF INDOLEAMINE 2,3-DIOXYGENASE<br/>[FR] INHIBITEURS D'INDOLÉAMINE 2,3-DIOXYGÉNASE
申请人:NETHERLANDS TRANSLATIONAL RES CENTER B V
公开号:WO2017153459A1
公开(公告)日:2017-09-14
The invention relates to a compound of Formula (I), or pharmaceutically acceptable enantiomers, or salts thereof. The present invention also relates to the use of compounds of Formula (I) as selective inhibitors of indoleamine 2,3-dioxygenase. The invention also relates to the use of the compounds of Formula (I) for the treatment or prevention of diseases cancer, infections, central nervous system disease or disorder, and immune-related disorders, either as a single agent or in combination with other therapies.
α-Amino-α-trifluoromethyl-phenylacetonitrile: A potential reagent for 19F NMR determination of enantiomeric purity of acids
作者:Miroslav Koos、Harry S. Mosher
DOI:10.1016/s0040-4020(01)80341-0
日期:——
the amino group is located on a crowded, chiral, quaternary carbon center, has been studied as a potential reagent for the 19F NMRdetermination of enantiomericpurity of chiral acids by conversion to their corresponding diastereomeric amides. The differences in the 19F NMR chemical shifts (Δδ) of the R,R/S,S versus R,S/S,R diastereomeric amides (8a–j) prepared from amine 2 and ten chiral acids range
α氨基α三氟甲基-苯基乙腈,光子晶体(CF 3)(CN)NH 2,2,其中,所述氨基位于一个拥挤的,手性,季碳中心,已经研究了作为潜在的试剂19 F NMR通过转化为相应的非对映异构酰胺确定手性酸的对映体纯度。由胺2制备的R,R / S,S与R,S / S,R非对映异构酰胺(8a–j)的19 F NMR化学位移(Δδ)的差异十种手性酸的含量最高为0.266 ppm。十个示例中的八个具有的Δδ超过了0.02 ppm的有用最小值。这些值明显优于其他已知试剂的值。