Radical C−N Borylation of Aromatic Amines Enabled by a Pyrylium Reagent
作者:Yuanhong Ma、Yue Pang、Sonia Chabbra、Edward J. Reijerse、Alexander Schnegg、Jan Niski、Markus Leutzsch、Josep Cornella
DOI:10.1002/chem.202000412
日期:2020.3.23
Herein, we report a radical borylation of aromatic amines through a homolytic C(sp 2 )-N bond cleavage. This method capitalizes on a simple and mild activation via a pyrylium reagent ( Sc Pyry-OTf) thus priming the amino group for reactivity. The combination of terpyridine and a diboron reagent triggers a radical reaction which cleaves the C(sp 2 )-N bond and forges a new C(sp 2 )-B bond. The unique
Synthesis of 2-Aryl- and 2,5-Diarylfurans and Thiophenes by Suzuki - Miyaura Reactions Using Potassium Trifluoroborate Salts and Heteroaryltellurides
作者:Giancarlo V. Botteselle、Thomas L. S. Hough、Raphael C. Venturoso、Rodrigo Cella、Adriano S. Vieira、Helio A. Stefani
DOI:10.1071/ch08255
日期:——
The Suzuki–Miyaura cross-coupling reaction of 2-(butyltellanyl) or 2,5-bis-(butyltellanyl)furans and thiophenes with potassium aryltrifluoroborate salts catalyzed by palladium afforded 2-aryl- or 2,5-diaryl-furans and thiophenes in moderate to good yields.
Therapeutic Potential of Targeting the Oncogenic SHP2 Phosphatase
作者:Li-Fan Zeng、Ruo-Yu Zhang、Zhi-Hong Yu、Sijiu Li、Li Wu、Andrea M. Gunawan、Brandon S. Lane、Raghuveer S. Mali、Xingjun Li、Rebecca J. Chan、Reuben Kapur、Clark D. Wells、Zhong-Yin Zhang
DOI:10.1021/jm5006176
日期:2014.8.14
containing protein tyrosine phosphatase-2 (SHP2) is an oncogenic phosphatase associated with various kinds of leukemia and solid tumors. Thus, there is substantial interest in developing SHP2 inhibitors as potential anticancer and antileukemia agents. Using a structure-guided and fragment-based libraryapproach, we identified a novel hydroxyindolecarboxylic acid-based SHP2 inhibitor 11a-1, with an IC50
Optimization of novel nipecotic bis(amide) inhibitors of the Rho/MKL1/SRF transcriptional pathway as potential anti-metastasis agents
作者:Jessica L. Bell、Andrew J. Haak、Susan M. Wade、Paul D. Kirchhoff、Richard R. Neubig、Scott D. Larsen
DOI:10.1016/j.bmcl.2013.04.080
日期:2013.7
CCG-1423 (1) is a novel inhibitor of Rho/MKL1/SRF-mediated gene transcription that inhibits invasion of PC-3 prostatecancer cells in a Matrigel model of metastasis. We recently reported the design and synthesis of conformationally restricted analogs (e.g., 2) with improved selectivity for inhibiting invasion versus acute cytotoxicity. In this study we conducted a survey of aromatic substitution with
enzyme) inhibitors. Based on the X-rayco-crystalstructure of compound 1 bound to human KLK7, the derivatives of this scaffold were designed, synthesized, and evaluated. Through structure-activity relationship studies focused on the side chain located in the prime site region of the enzyme, representative compounds 15, 33a, and 35a were identified as highly potent and selectiveinhibitors of human