204-03-5Relevant articles and documents
5,11-Diazadibenzo[hi,qr]tetracene: Synthesis, Properties, and Reactivity toward Nucleophilic Reagents
Fujimoto, Keisuke,Takimoto, Satoshi,Masuda, Shota,Inuzuka, Toshiyasu,Sanada, Kazutaka,Sakamoto, Masami,Takahashi, Masaki
, p. 8951 - 8955 (2021)
5,11-Diazadibenzo[hi,qr]tetracene was synthesized as a new nitrogen-substituted polycyclic heteroaromatic compound by Pd-catalyzed cycloisomerization of an alkyne precursor followed by oxidative cyclization with bis(trifluoroacetoxy)iodobenzene. The substitution of imine-type nitrogen atoms significantly enhanced its electron-accepting character and facilitated the direct nucleophilic addition of arylamines under strongly basic conditions to afford the desired amino-substituted products. The introduction of amino groups induced a remarkable red-shift in their absorption spectra; the tetrasubstituted product exhibited intense near-infrared absorbing property. Furthermore, the π-electronic system, which includes a redox-active 1,4-diazabutadiene moiety, underwent reversible interconversion to its corresponding reduced form upon reduction with NaBH4 and aerobic oxidation.
KRAS G12D INHIBITORS
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Paragraph 0244, (2021/03/05)
The present invention relates to compounds that inhibit KRas G12D. In particular, the present invention relates to compounds that inhibit the activity of KRas G12D, pharmaceutical compositions comprising the compounds and methods of use therefor.
Multi-layer 3D chirality: new synthesis, AIE and computational studies
Liu, Yangxue,Wu, Guanzhao,Yang, Zhen,Rouh, Hossein,Katakam, Nandakumar,Ahmed, Sultan,Unruh, Daniel,Cui, Zhonghua,Lischka, Hans,Li, Guigen
, p. 692 - 698 (2020/04/15)
New synthesis of multi-layer 3D chiral molecules has been developed under novel conditions to give better outcomes. The aggregation-induced emission (AIE), UV irradiation/excitation, charge transfer (CT) and local excited (LE) ππ* transitions have been investigated on a representative individual enantiomer of pseudo C2 asymmetry which was made possibly by differentiating moieties on phosphorous on N-phosphonyl ring of chiral sandwich framework. Meanwhile, a new tandem C-N/C-C coupling reaction was unexpectedly rendered providing a novel access to special benzo[a]carbazoles.