122475-57-4Relevant academic research and scientific papers
Applications of TiCl3 as a Diagnostic Reagent for the Detection of Nitro- and N-Oxide-Containing Compounds as Potentially Mutagenic Impurities Using Ultrahigh-Performance Liquid Chromatography Coupled with High-Resolution Mass Spectrometry
Yang, Rong-Sheng,Beard, Adam,Sheng, Huaming,Zhang, Li-Kang,Helmy, Roy
, p. 59 - 64 (2016)
The ICH has strict guidelines for limiting the presence of potentially mutagenic impurities (PMIs) in marketed drugs. Therefore, it is important to fully characterize and quantitate all possible PMIs that could arise during the process of synthesizing and developing a drug. Two important and prevalent examples of PMIs are compounds containing N-oxide and nitro functional groups. TiCl3 derivatization is an established method for determining the presence or absence of N-oxide metabolites by reduction to the corresponding amine. In this study, we demonstrate a novel application of TiCl3 reduction combined with high-resolution UHPLC/HRMS to analyze PMIs. The results indicate that a variety of N-oxide- and nitro-containing compounds can be readily characterized by this facile platform method. In addition, we show that this chemical derivatization method can be utilized to enhance the ionization of nitro-containing compounds for LC/MS analysis.
Polymethylated γ-carbolines with potent anti-bovine viral diarrhea virus (BVDV) activity
Aoyama, Hiroshi,Sako, Kumiko,Sato, Shinichi,Nakamura, Masahiko,Miyachi, Hiroyuki,Goto, Yukinori,Okamoto, Mika,Baba, Masanori,Hashimoto, Yuichi
scheme or table, p. 779 - 785 (2010/09/18)
Several anti-BVDV agents with a polymethylated γ-carboline skeleton were synthesized, and their anti-BVDV activity was evaluated. The most potent antiviral agent, SK3M4M5M (20), was synthesized by Pd-catalyzed Buchwald-Hartwig amination reaction followed
Syntheses of five potential heterocyclic amine food mutagens
Tanga,Bupp,Tochimoto
, p. 717 - 727 (2007/10/03)
The syntheses of the potential heterocyclic amine food mutagens, 3,5,7- trimethyl-2-aminoimidazo[4,5-b]pyridine, 1,4,7-trimethyl-2-aminoimidazo[4,5- c]pyridine, 1,6,7-trimethyl-2-aminoimidazo[4,5-c]-pyridine, 3,4,6-trimethyl- 2-aminoimidazo[4,5-c]pyridine, and 1,4,6-trimethyl-7-aminoimidazo[4,5-c]- pyridine are described.
4-AMINOPYRIDINE-2,3-DICARBOXYLIC ACID FROM CLITOCYBE ACROMELALGA
Hirayama, Fukushi,Konno, Katsuhiro,Shirahama, Haruhisa,Matsumoto, Takeshi
, p. 1133 - 1136 (2007/10/02)
A new pyridine derivative, 4-aminopyridine-2,3-dicarboxylic acid, was isolated from Clitocybe acromelalga, and its structure was determined by spectral and synthetic methods. - Keywords: Clitocybe acromelalga; Tricholomataceae; Basidiomycetes; 4-aminopyridine-2,3-dicarboxylic acid.
