Benzofuran Derivatives as Potent, Orally Active S1P1 Receptor Agonists: A Preclinical Lead Molecule for MS
摘要:
We have discovered novel benzofuran-based S1P(1) agonists with excellent in vitro potency and selectivity. 1-((4-(5-Benzylbenzofuran-2-yl)-3-fluorophenyl)methyl) azetidine-3-carboxylic acid (18) is a potent S1P(1) agonist with > 1000 x selectivity over S1P(3). It demonstrated a good in vitro ADME profile and excellent oral bioavailability across species. Dosed orally at 0.3 mg/kg, 18 significantly reduced blood lymphocyte counts 24 h postdose and demonstrated efficacy in a mouse EAE model of relapsing MS.
Deoxygenative cross-electrophile coupling of benzyl chloroformates with aryl iodides
作者:Yingying Pan、Yuxin Gong、Yanhong Song、Weiqi Tong、Hegui Gong
DOI:10.1039/c9ob00628a
日期:——
This work describes Ni-catalyzed cross-electrophile coupling of benzyl chloroformate derivatives with aryl iodides that generates a wide range of diaryl methane products. The mild reaction conditions merit the C–O bond radical fragmentation of benzyl chloroformates via halide abstraction or a single electron reduction by a Ni catalyst. This work offers a new substrate type for cross-electrophile couplings
这项工作描述了镍催化的氯甲酸苄酯衍生物与芳基碘化物的交叉亲电子偶联,生成多种二芳基甲烷产物。温和的反应条件使得氯甲酸苄酯的 C-O 键自由基通过卤化物夺取或 Ni 催化剂的单电子还原而断裂。这项工作为交叉亲电子偶联提供了一种新的底物类型。
Visible light-induced monofluoromethylenation of heteroarenes with ethyl bromofluoroacetate
作者:Wei Yu、Xiu-Hua Xu、Feng-Ling Qing
DOI:10.1039/c6nj00281a
日期:——
A mild approach for the directintroduction of an ethoxycarbonylmonofluoromethyl group into heteroarenesvia visible light photocatalysis has been developed.
Bromodifluoromethylation of heteroaromatics with sodium bromodifluoromethanesulfinate
作者:Jin Zhang、Xiu-Hua Xu、Feng-Ling Qing
DOI:10.1016/j.tetlet.2016.04.095
日期:2016.6
The bromodifluoromethylation of heteroaromatics (benzofuran, benzo[b]thiophene, and 2H-chromen-2-one) with sodium bromodifluoromethanesulfinate (BrCF2SO2Na) was developed. This reaction proceeded smoothly at room temperature to afford the bromodifluoromethylated products in moderate to high yields.
开发了用溴代二氟甲烷亚磺酸钠(BrCF 2 SO 2 Na)进行杂芳族化合物(苯并呋喃,苯并[ b ]噻吩和2 H-铬-2--2-酮)的溴二氟甲基化。该反应在室温下顺利进行,以中等至高收率得到溴二氟甲基化产物。
Gold(I)-catalyzed Benzylation of (Hetero)aryl Boronic Acids with (Hetero)benzyl Bromides by the Strategy of a S<sub>N</sub>2-type Reaction
作者:Wenqing Zang、Yin Wei、Min Shi
DOI:10.1002/asia.201800923
日期:2018.10.4
gold‐catalyzed benzylation of (hetero)aryl boronic acids with (hetero)benzylbromides to give the corresponding cross‐coupling products in moderate to good yields is reported. The reaction proceeds through a possible intermolecular SN2‐type reaction pathway to give a wide variety of di(hetero)arylmethanes as the desired products. An intriguing reaction mechanism has been proposed on the basis of control experiments
在此,报道了第一个用(杂)苄基溴对(杂)芳基硼酸进行金催化的苄基化反应,以得到中等至良好收率的相应交叉偶联产物的实例。反应通过可能的分子间S N 2型反应路径进行,从而得到各种所需的二(杂)芳基甲烷。在控制实验,31 P-NMR光谱检测和DFT计算的基础上,提出了一种有趣的反应机理。
S1P receptor modulating compounds and use thereof
申请人:Saha Ashis K.
公开号:US20080064677A9
公开(公告)日:2008-03-13
The present invention relates to compounds of the general formula (I) that have activity as S1P receptor modulating agents and the use of such compounds to treat diseases associated with inappropriate S1P receptor activity. The compounds may be used as immunomodulators, e.g., for treating or preventing diseases such as autoimmune and related immune disorders including systemic lupus erythematosus, inflammatory bowel diseases such as Crohn's disease and ulcerative colitis, type I diabetes, uveitis, psoriasis, myasthenia gravis, rheumatoid arthritis, non-glomerular nephrosis, hepatitis, Behcet's disease, glomerulonephritis, chronic thrombocytopenic purpura, hemolytic anemia, hepatitis and Wegner's granuloma; and for treating other conditions.