3084-13-7Relevant articles and documents
TROPOLONE DERIVATIVES AND TAUTOMERS THEREOF FOR IRON REGULATION IN ANIMALS
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Page/Page column 63, (2021/04/23)
Disclosed are a series of compounds or their tautomers having a general structure represented by Formula (la), (lb), (Ila), (lIb), or (lIc) and pharmaceutically acceptable salts thereof. The present disclosure also relates to pharmaceutical compositions comprising said compounds or tautomers. The present disclosure further relates to a method of treating a disease or condition associated with iron dysregulation or dysfunctional iron homeostasis comprising administering to a subject in need thereof a therapeutically effective amount of Formula (la), (lb), (Ila), (lIb), or (lIc) compounds or tautomers.
Syntheses of novel 1,3-diazaazulene derivatives and their nonlinear optical characterization
Zhu, Yun-Ji,Qin, An-Jun,Fu, Li-Min,Ai, Xi-Cheng,Guo, Zhi-Xin,Zhang, Jian-Ping,Ye, Cheng
, p. 2101 - 2106 (2008/02/07)
We have synthesized three new 1,3-diazaazulene derivatives, namely, 2-(4′-N,N-dimethylaminophenyl)-6-nitro-1,3-diazaazulene (18, DMAPNA), 2-(4′-aminophenyl)-6-nitro-1,3-diazaazulene (19, APNA) and 2-[4′-N-(2-hydroxyethyl)aminophenyl]-6-nitro-1,3-diazaazulene (20, HEAPNA), each of them contains an amino substitute as the electron donor (D), 2-phenyl-1,3-diazaazulene as the π-conjugated bridge and a nitro as the electron acceptor (A). Our theoretical results have predicted that these D-π-A type chromophores possess low ground-state dipole moment (μg) and large first-order hyperpolarizability (β), which may facilitate a low degree of aggregation for the chromophores dispersed in a polymeric matrix as well as a large nonlinear optical (NLO) response. The expected NLO performance has been confirmed by the experimental β and μg values, e.g., for 18, 407.8 × 10-30 esu and 4.7 D, respectively. The origins of large β and low μg are explained in terms of a two-state quantum model. The DMAPNA (18)-doped and poled polymethylmethacrylate film exhibits a large second harmonic generation (SHG) coefficient of d33 = 10.9 pm V-1 with excellent thermal stability (above 70% of the maximal SHG coefficient remains at ~100 °C). The Royal Society of Chemistry.
Improved and highly versatile synthesis of 5-aryltropones
Potenziano, James,Spitale, Robert,Janik, Mark E.
, p. 2005 - 2016 (2007/10/03)
The use of 5-iodo-2-methoxytropone in palladium(0)-catalyzed coupling reactions with a variety of arylboronic acids has resulted in significantly improved reaction yields and times for a sterically and electronically diverse series of novel 5-aryltropones