3339-73-9Relevant articles and documents
Crystal structure, thermal, luminescent and terahertz time domain spectroscopy of magnesium N-phthaloyl-β-alaninate: A combined experimental and theoretical study
Nadeem, Muhammad,Bhatti, Moazzam H.,Sayin, Koray,Yunus, Uzma,Mehmood, Mazhar,Mehboob, Shoaib,Fl?rke, Ulrich
, p. 1 - 8 (2018)
A magnesium complex using N-phthaloyl-β-alanine (NPA) as ligand was synthesized and its crystal structure was characterized by single-crystal X-ray diffraction analysis. The Fourier transformation infrared spectroscopy (FTIR), thermogravimetry (TG) and differential thermal analysis (DTA), fluorescence spectroscopy and terahertz time-domain spectroscopy (THz-TDS) were performed for magnesium N-phthaloyl-β-alaninate (MgNPA). The coordination geometry around Mg (II) has found to be distorted octahedral and the coordination mode of NPA in MgNPA is monodentate i.e. η1μ1. The significant enhancement was observed in the emission intensity of MgNPA complex as compared to the ligand NPA during solid state photoluminescence spectroscopy. The computational investigations of the complex were carried out at B3LYP/6-31 + G (d,p) level in gas phase to support our experimental results. The small energy gap between frontier molecular orbitals (FMOs) manifested that MgNPA is a very reactive, chemically soft and optically active complex. The terahertz time domain spectroscopy of the complex and ligand was performed in order to characterize as well as to find out refractive index and absorption coefficient in 0.2–3.2 THz frequency range. Both the complex and ligand shows the characteristic absorption peaks in this frequency range. The decrease in refractive index is observed by the complexation of NPA with Mg.
Thiamin Biosynthesis in Yeast. Origin of the Five-Carbon Unit of the Thiazole Moiety
White, Robert L.,Spenser, Ian D.
, p. 4934 - 4943 (1982)
Radioactivity from D--, D--, and D-glucose, from D-fructose, and from glycerol is incorporated nonrandomly into the C5 chain of the thiazole moiety of thiamin in Saccharomyces cerevisiae.The incorporation pattern leads to inference that the C5 chain is derived from a 2-pentulose, which is generated from the hexose precursors by the oxidative as well as by the nonoxidative pentose phosphate pathway.A chemically rational scheme for the biogenesis of the thiazole moiety of thiamin is presented.
Convergent Route to β-Amino Acids and to β-Heteroarylethylamines: An Unexpected Vinylation Reaction
Chen, Xuan,Zard, Samir Z.
supporting information, (2020/05/05)
Various protected β2-amino acids can be prepared by radical addition of β-phthalimido-α-xanthyl propionic acid, both as the free acid or as the ethyl ester. Successive radical additions provide access to more complex structures. In the case of the free acid, addition to certain heteroaromatics leads directly to β-heteroarylethylamines through spontaneous decarboxylation of the intermediate adduct. Forcing the decarboxylation in some cases generated a vinyl group by decarboxylative elimination of the phthalimido group.
Synthesis, anti-mycobacterial and cytotoxic evaluation of substituted isoindoline-1,3-dione-4-aminoquinolines coupled: Via alkyl/amide linkers
Rani, Anu,Viljoen, Albertus,Johansen, Matt D.,Kremer, Laurent,Kumar, Vipan
supporting information, p. 8515 - 8528 (2019/03/21)
A series of secondary amine-substituted isoindoline-1,3-dione-4-aminoquinolines were prepared via microwave heating and assayed for their anti-mycobacterial activities. The compound with a butyl chain as a spacer between the two pharmacophores and piperidine as the secondary amine component on the isoindoline ring was the most potent and non-cytotoxic among the synthesized compounds, exhibiting a minimum inhibitory concentration (MIC99) of 6.25 μg mL-1 against Mycobacterium tuberculosis.
