C-N bond forming reactions in the synthesis of substituted 2-aminoimidazole derivatives
作者:Asier Gómez-SanJuan、José Manuel Botija、Almudena Méndez、Nuria Sotomayor、Esther Lete
DOI:10.3998/ark.5550190.p008.058
日期:——
Carbon-nitrogen bondformingreactions oriented to the synthesis of 2-amino-imidazolidines and imidazoles have been investigated. The C-2 amination of imidazolidinones, via the corresponding 2-chlorodihydroimidazoles, led to 2-benzylaminodihydroimidazole or bis(dihydroimidazole)amino derivatives by choosing the adequate experimental conditions. On the other hand, the use of N-acyl-2-methylsulfanyldihydroimidazoles
One‐Step Azolation Strategy for Site‐ and Chemo‐Selective Labeling of Proteins with Mass‐Sensitive Probes
作者:Kuei C. Tang、Monika Raj
DOI:10.1002/anie.202007608
日期:2021.1.25
The chemical modification of proteins in a site‐selective manner leads to many advances in various scientific fields. The major challenges with conventional N‐terminal bioconjugation techniques are the lack of universal sequence compatibility and poor mass‐detection sensitivity of the resulting bioconjugates. This approach efficiently analyzes proteolytic fragments and native proteins in a complex
以位点选择性方式对蛋白质进行化学修饰导致了各个科学领域的许多进步。传统 N 末端生物偶联技术的主要挑战是缺乏通用序列相容性和所得生物偶联物的质量检测灵敏度差。这种方法可以有效地分析复杂混合物中的蛋白水解片段和天然蛋白质。具有增强的质量检测灵敏度的生物偶联物的位点选择性合成通常需要多个化学步骤。我们提出了一种单步、通用的策略,用于使用质量促进剂选择性修饰蛋白质 N 末端。化学标签通过多个顺序增强肽检测,从而导致对所得生物缀合物的明确分析。
Methods of making 6-[(4,5-Dihydro-1H-imidazol-2-yl) amino-]-7-methyl-1H-benzimidazole-4-carbonitrile and its preferred salt form
申请人:The Board of Regents of the University of Nebraska
公开号:EP1953146A1
公开(公告)日:2008-08-06
A method of making a compound of formula (II):
comprising:
a) providing a compound of formula (I):
b) cyclizing the formula (I) compound in a single pot by using a non ferrous metal hydrogenation catalyst, in the presence of hydrogen or a hydrogen donor, and optionally a cyclization agent, yielding the compound of formula (II).
一种制造式(II)化合物的方法:
包括
a) 提供式(I)化合物:
b) 在氢或氢供体以及可选的环化剂存在下,使用非铁金属氢化催化剂,在一锅中环化式(I)化合物,得到式(II)化合物。
A novel method for the efficient synthesis of 2-arylamino-2-imidazolines
作者:Sreenivasa R Mundla、Larry J Wilson、Sean R Klopfenstein、William L. Seibel、Nick N Nikolaides
DOI:10.1016/s0040-4039(00)01102-3
日期:2000.8
A novel method for the efficient synthesis of 2-arylamino-2-imidazolines is described. (C) 2000 Elsevier Science Ltd. All rights reserved.
BERGMANN, JANOS;TAKACS, KALMAN, ARCH. PHARM., 323,(1990) N, C. 387-391