幻蓝(MB + ˙ SbCl 6 −盐),即三-4-溴苯基铵阳离子自由基,是一种常规使用的单电子氧化剂,在储存时在固态下缓慢分解,形成所谓的“蓝兄弟”,这通常使情况复杂化氧化过程的定量分析。在此,我们通过结合 DFT 和实验方法,包括分离TAB + ˙ SbCl 6 −及其X 射线晶体学表征。老化的幻蓝样品中TAB的形成是通过一对MB的 Scholl 型偶联以及随后分子溴的损失而发生的。对这一事实的认识导致我们合理设计和合成了三(2-溴-4-叔丁基苯基)胺,被称为“布鲁斯表弟”( BC : E ox1 = 0.78 V vs. Fc/Fc +,λ max ( BC + ˙ ) = 805 nm, ε max = 9930 cm -1 M -1 ),通过将空间要求较高的叔丁基置于芳环的对位,其氧化二聚作用受到显着阻碍。由三苯胺两步合成BC及其阳离子自由基 ( BC + ˙ ) 的高稳定性保证
A wholly aromatic polyamide copolymer having excellent heat, flame and chemical resistances, solubility in organic solvents and shaping property and useful for shaped article having a high mechanical strength and modulus of elasticity, comprising the repeating units of the formulae:
and at least one member selected from
wherein X = a halogen atom, n, or m = 1 to 4 and n + m = 1 to 8.
一种全芳香族聚酰胺共聚物,具有优异的耐热性、阻燃性和耐化学性,在有机溶剂中的溶解性和成型性能,可用于具有高机械强度和弹性模量的成型制品,由以下式子的重复单元组成:
和至少一个选自以下的成员
其中 X = 卤素原子,n 或 m = 1 至 4,n + m = 1 至 8。
Azocompounds for the antemortem diagnosis of Alzheimer's disease and in vivo imaging and prevention of amyloid deposition
申请人:UNIVERSITY OF PITTSBURGH
公开号:EP1110945A2
公开(公告)日:2001-06-27
Amyloid binding compounds which are derivatives of Chrysamine G, pharmaceutical compositions containing, and methods using such compounds to identify Alzheimer's brain in vivo and to diagnose other pathological conditions characterized by amyloidosis, such as Down's Syndrome are described. Pharmaceutical compositions containing Chrysamine G and derivatives thereof and methods using such compositions to prevent cell degeneration and amyloid-induced toxicity in amyloidosis associated conditions are also described. Methods using Chrysamine G derivatives to stain or detect amyloid deposits in biopsy or post-mortem tissue are also described. Methods using Chrysamine G derivatives to quantify amyloid deposits in homogenates of biopsy and post-mortem tissue are also described.
本文描述了作为金黄胺 G 衍生物的淀粉样蛋白结合化合物、含有此类化合物的药物组合物以及使用此类化合物鉴定体内阿尔茨海默氏症大脑和诊断以淀粉样变性为特征的其他病理状况(如唐氏综合症)的方法。此外,还描述了含有金黄胺 G 及其衍生物的药物组合物,以及使用此类组合物在淀粉样变性相关病症中防止细胞变性和淀粉样诱导毒性的方法。还介绍了使用金黄胺 G 衍生物染色或检测活检或死后组织中淀粉样沉积物的方法。还介绍了使用金黄胺 G 衍生物量化活检组织和死后组织匀浆中淀粉样蛋白沉积的方法。
AZOCOMPOUNDS FOR THE ANTEMORTEM DIAGNOSIS OF ALZHEIMER'S DISEASE AND IN VIVO IMAGING AND PREVENTION OF AMYLOID DEPOSITION
申请人:UNIVERSITY OF PITTSBURGH
公开号:EP0823894A1
公开(公告)日:1998-02-18
COMPOUNDS FOR THE ANTEMORTEM DIAGNOSIS OF ALZHEIMER'S DISEASE AND IN VIVO IMAGING AND PREVENTION OF AMYLOID DEPOSITION