31039-74-4Relevant articles and documents
Novel functionalized indigo derivatives for organic electronics
Klimovich, Irina V.,Zhilenkov, Alexander V.,Кuznetsova, Lidiya I.,Frolova, Lubov A.,Yamilova, Olga R.,Troyanov, Sergey I.,Lyssenko, Konstantin A.,Troshin, Pavel A.
, (2020/11/24)
A series of nine novel indigo derivatives, including diiodoindigo, octahalogenated indigoids and compounds with extended π-conjugated system, were synthesized, characterized and investigated as semiconductor materials in organic field-effect transistors (OFETs). Among them, 6,6′-diiodoindigo demonstrated the ambipolar behavior with balanced p-type and n-type mobilities. The complete substitution of hydrogens at the indigo core with halogen atoms led to low electron mobilities in OFETs. An extension of the conjugated system through the introduction of small aromatic substituents (thiophene and phenyl) resulted in predominant p-type behavior. Fusion of aromatic rings resulted in z-shaped dibenzoindigo, which showed poor charge transport properties due to the non-optimal arrangement of molecules along each other in the crystal lattice. The acquired data fulfilled the previously reported model based on the relationship between the chemical nature of substituents and their positions at the indigo core, optoelectronic properties of materials and their performance in OFETs. The results of this study will be useful for rational design of a new generation of the indigo-based semiconductors for biocompatible organic electronics.
Synthesis, anti-inflammatory activity and COX-1/COX-2 inhibition of novel substituted cyclic imides. Part 1: Molecular docking study
Abdel-Aziz, Alaa A.-M.,Eltahir, Kamal E.H.,Asiri, Yousif A.
scheme or table, p. 1648 - 1655 (2011/05/06)
A group of cyclic imides (1-13) was designed for evaluation as selective COX-2 inhibitors and investigated in vivo for their anti-inflammatory activities using carrageenan-induced rat paw edema model. Compounds 5b, 6b, 11b, 11c, 12b and 12c were proved to be potent COX-2 inhibitors with IC50 range of 0.1-1.0 μM. In vitro COX-1/COX-2 inhibition structure-activity studies identified compound 5b as a highly potent (IC50 = 0.1 μM), and an extremely selective [COX-2 (SI) = 400] comparable to celecoxib [COX-2 (SI) > 333.3], COX-2 inhibitor that showed superior anti-inflammatory activity (ED 50 = 104 mg/kg) relative to diclofenac (ED50 = 114 mg/kg). A Virtual screening was carried out through docking the designed compounds into the COX-2 binding site to predict if these compounds have analogous binding mode to the COX-2 inhibitors. Molecular modeling (docking) study showed that the CH3O substituents of 5b inserted deep inside the 2°-pocket of the COX-2 active site, where the O-atoms of such group underwent a H-bonding interaction with His90 (2.43, 2.83 ), Arg513 (2.89 ) and Tyr355 (3.34 ). Docking study of the synthesized compound 5b into the active site of COX-2 revealed a similar binding mode to SC-558, a selective COX-2 inhibitor.
Microwave Irradiation Promoted Reactions of Anhydrides with Isocyanates. Preparation of N-Substituted Phthalimides
Khajavi, Mohammad S.,Nikpour, Farzad,Hajihadi, Mostafa
, p. 96 - 97 (2007/10/03)
The synthesis of N-substituted phthalimides by the condensation of anhydrides and isocyanates was conducted efficiently in a few minutes in unmodified commercial microwave ovens using unsealed vessels.
