描述了噻吩并[3,2- b ]吡啶基脲衍生物作为新型和有效的尿紧张素-II受体拮抗剂的制备方法和SAR曲线。进行活性优化研究,探索取代基对噻吩并[3,2- b ]吡啶基核心和哌啶基部分的苄基的影响,从而鉴定出对-氟苄基取代的噻吩并[3,2- b ]吡啶基尿素6n为一种高效的UT拮抗剂,IC 50值为13 nM。尽管6n表现出良好的代谢稳定性和低的hERG结合活性,但其口服生物利用度却不可接受。
Design and Synthesis of Potent, Orally Efficacious Hydroxyethylamine Derived β-Site Amyloid Precursor Protein Cleaving Enzyme (BACE1) Inhibitors
作者:Thomas A. Dineen、Matthew M. Weiss、Toni Williamson、Paul Acton、Safura Babu-Khan、Michael D. Bartberger、James Brown、Kui Chen、Yuan Cheng、Martin Citron、Michael D. Croghan、Robert T. Dunn、Joel Esmay、Russell F. Graceffa、Scott S. Harried、Dean Hickman、Stephen A. Hitchcock、Daniel B. Horne、Hongbing Huang、Ronke Imbeah-Ampiah、Ted Judd、Matthew R. Kaller、Charles R. Kreiman、Daniel S. La、Vivian Li、Patricia Lopez、Steven Louie、Holger Monenschein、Thomas T. Nguyen、Lewis D. Pennington、Tisha San Miguel、E. Allen Sickmier、Hugo M. Vargas、Robert C. Wahl、Paul H. Wen、Douglas A. Whittington、Stephen Wood、Qiufen Xue、Bryant H. Yang、Vinod F. Patel、Wenge Zhong
DOI:10.1021/jm300118s
日期:2012.11.8
We have previously shown that hydroxyethylamines can be potent inhibitors of the BACE1 enzyme and that the generation of BACE1 inhibitors with CYP 3A4 inhibitory activities in this scaffold affords compounds (e.g., 1) with sufficient bioavailability and pharmacokinetic profiles to reduce central amyloid-β peptide (Aβ) levels in wild-type rats following oral dosing. In this article, we describe further
First examples of functionalisation of meso -aryl tetrabenzotriazaporphyrins (TBTAPs) through cross-coupling reactions
作者:Nuha Alharbi、Graham J. Tizzard、Simon J. Coles、Michael J. Cook、Andrew N. Cammidge
DOI:10.1016/j.tet.2015.03.095
日期:2015.9
convenient access to tetrabenzotriazaporphyrins (TBTAPs) functionalised with meso-aryl substituents. In this paper we report the first examples of further functionalization of the meso-sites through Suzuki–Miyaura and copper-free Sonagashira cross-coupling reactions of the meso-(bromophenyl)TBTAPs, demonstrating the breadth of new materials design now possible in the hybridmacrocycles.
approach to C-3 disubstituted 2-oxa-5-azabicyclo[2.2.1]heptanes as carbon-atom bridged morpholines, starting with 4R-hydroxy-l-proline as a chiron. Attaching an aceticacid moiety on the C-3 carbon of the 2-oxa-5-azabicyclo[2.2.1]heptane core reveals the framework of an embedded γ-amino butyric acid (GABA). Variations in the nature of the substituent on the tertiary C-3 atom with different alkyls or aryls