ANILINO-PYRAZOLE DERIVATIVES, COMPOSITIONS AND METHODS THEREOF
摘要:
The invention provides novel anilino-pyrazole derivatives as a cyclin-dependent kinase 2 (CDK2) inhibitors. The invention also provides pharmaceutical compositions comprising the compounds and methods thereof for treating various conditions, diseases and disorders associated with or related to CDK2 activities, or associated with abnormal cell growth, such as tumor growth and cancer.
Antagonizing STAT3 activation with benzo[b]thiophene 1, 1-dioxide based small molecules
摘要:
STAT3 is an attractive therapeutic target for cancer therapy. However, due to low potency or poor druggability, none of its inhibitors are clinically available. Herein, a series of aminobenzo[b]thiophene 1, 1-dioxides with good drug-likeness properties were designed, synthesized and evaluated as STAT3 inhibitors. Most of them exhibited higher antitumor activity than the small-molecule STAT3 inhibitor, Stattic. Compound 15 was the most potent and had an IC50 range in 0.33-0.75 mu M in various cancer cell lines. The overexpressed and IL-6 induced phosphorylation levels of STAT3 were both inhibited by 15 without influencing the phosphorylation levels of the upstream kinases Src and Jak2. 15 also suppressed the expressions of STAT3 downstream gene, Bcl-2. 15 effectively increased the ROS levels of cancer cells, induced cancer cell apoptosis and abolished the colony formation ability of cancer cells without affecting bypass kinase p-Erk. Furthermore, 15 in vivo induced significant antitumor responses, and exhibited less toxicity than Doxorubicin. Together, this study described a class of new STAT3 inhibitors as antitumor agents. (C) 2016 Elsevier Masson SAS. All rights reserved.
efficient 1,3‐dipolar [3 + 2] cycloaddition of nonstabilized azomethine ylides generated in situ with benzo[b]thiophene 1,1‐dioxides as the dipolarophiles has been developed. The efficient method affords tricyclic pyrrolidine‐fused benzo[b]thiophene 1,1‐dioxide derivatives in high to excellent yields (up to 99%) with excellent diastereoselectivities (up to >25:1 dr) under mild reaction conditions. The structure
已经开发出一种快速高效的非稳定的偶氮甲胺碘化物的1,3-偶极[3 + 2]环加成反应,该反应是用苯并[ b ]噻吩1,1-二氧化物作为偶极亲和剂而就地产生的。这种有效的方法在温和的反应条件下,以高至极好的收率(高达99%)和极好的非对映选择性(高达> 25:1 dr)提供了三环吡咯烷稠合的苯并[ b ]噻吩1,1-二氧化物衍生物。X射线晶体学证实了典型产品的结构。
Copper-Catalyzed Umpolung of <i>N</i>-2,2,2-Trifluoroethylisatin Ketimines for the Enantioselective 1,3-Dipolar Cycloaddition with Benzo[<i>b</i>]thiophene Sulfones
A copper-catalyzed umpolung of N-2,2,2-trifluoroethylisatin ketimines for the enantioselective1,3-dipolarcycloaddition with benzo[b]thiophene sulfones was developed. Using a catalyst system consisting of an (S,Sp)-tBu-Phosferrox ligand, Cu(OTf)2, and Cs2CO3, a range of pentacyclic spirooxindoles containing pyrrolidine and benzo[b]sulfolane subunits were obtained in high efficiency with excellent
开发了一种铜催化的N -2,2,2-三氟乙基靛红酮亚胺与苯并[ b ]噻吩砜的对映选择性 1,3-偶极环加成反应。使用由 ( S , S p )- t Bu-Phosferrox 配体、Cu(OTf) 2和 Cs 2 CO 3组成的催化剂体系,以高浓度获得了一系列含有吡咯烷和苯并[ b ]环丁砜亚基的五环螺氧吲哚。在温和条件下具有出色的区域选择性、非对映选择性和对映选择性。也证明了该反应的实用性和多功能性。
A straightforward electrochemical reduction of benzo[b]thiophene 1,1-dioxides with HFIP as the hydrogen donor has been reported in an undivided cell under metal-free conditions. Moreover, the tolerance of various functional groups and scaled-up experiments showed the practicability and potential applications of this methodology.
据报道,在无金属条件下,在未分割的电池中,以 HFIP 作为氢供体,可以直接电化学还原苯并[ b ]噻吩 1,1-二氧化物。此外,各种官能团的耐受性和放大实验表明了该方法的实用性和潜在应用。