Basicity of nitrogen–sulphur(<scp>VI</scp>) compounds. Part 6. Ionization of NN′-di-and N-mono-substituted sulphamides and dihydro-2,1,3-benzothiadiazoline and benzothiadiazine 2,2-dioxides (cyclic sulphamides)
作者:Padraig O. Burke、Séan D. McDermott、Thomas J. Hannigan、William J. Spillane
DOI:10.1039/p29840001851
日期:——
tri-substituted sulphamides have been synthesised and their ionization equilibria in base (Schemes 1–3) have been studied. Many of the sulphamides are new materials. The pKa values obtained for each series have been correlated in Hammett and Taft plots. The Hammett ρ values obtained for the ionization of the proximate hydrogen are ca. 2.3. The Taft ρ* value obtained for ionization of the ‘remoter’
已合成了36个二取代的,单取代的和两个三取代的磺酰胺,并研究了它们在碱中的电离平衡(方案1-3)。许多磺酰胺是新材料。在Hammett和Taft图中,已将每个系列获得的p K a值关联起来。对于邻近氢的电离获得的哈米特ρ值约为。2.3。用于“远程”氢离子化获得的Taftρ*值为1.68。六元环状磺酰胺比其无环类似物的酸性大约高出约2。2.5 p ķ一个单元和五元环sulphamides是CA。4 p K a单元比模型开放链对应单元酸性更高。硫d-轨道参与和环应变被认为是这种“增强酸”作用的可能来源。
SUBSTITUTED N-ARYL BENZAMIDES AND RELATED COMPOUNDS FOR TREATMENT OF AMYLOID DISEASES AND SYNUCLEINOPATHIES
申请人:Snow Alan
公开号:US20090060838A1
公开(公告)日:2009-03-05
Substituted n-aryl benzamides, related compounds and their pharmaceutically acceptable salts, their synthesis and labeling, pharmaceutical compositions containing them, and their use in the treatment of amyloid diseases, including Aβ amyloidosis, such as observed in Alzheimer's disease, IAPP amyloidosis, such as observed in type 2 diabetes, and synucleinopathies, such as observed in Parkinson's disease, and the manufacture of medicaments for such treatment are provided. Also provided is the use of the disclosed compounds as imaging agents and methods for in vivo imaging and diagnosis of amyloid and synuclein diseases.
Microwave-Assisted Synthesis of Some Substituted Sulfamides
作者:Aliye Gediz Erturk、Yunus Bekdemir
DOI:10.1080/10426507.2013.819868
日期:2014.1.1
Microwave-assisted synthesis of some substituted open-chain and cyclic sulfamides, by amine-exchange reaction, was studied in a modified domestic microwave oven. Reaction times and yields under microwave radiation were compared with classical heating. Synthesis of the sulfamides under microwave irradiation gave better yields with the desired compounds, and in considerably reduced reaction times, than those obtained by classical heating. [Supplementary materials are available for this article. Go to the publisher's online edition of Phosphorus, Sulfer, and Silicon and the Related Elements for the following free supplemental files: Additional figures.]
NOVEL AMINOBENZOSULTAM DERIVATIVES AS LIPOXYGENASE INHIBITORS