147085-13-0Relevant academic research and scientific papers
Synthesis of macrocyclic systems from 4,4'-diamino-3,3'-bi-1,2,5-oxadiazole and 3(4)-amino-4(3)-(4-amino-1,2,5-oxadiazol-3-yl)-1,2,5-oxadiazole 2-oxides
Epishina,Kulikov,Makhova
, p. 644 - 651 (2008)
Oxidative cyclocondensation of 4,4'-diamino-3,3'-bi-1,2,5-oxadiazole and isomeric 3(4)-amino-4(3)-(4-amino-1,2,5-oxadiazol-3-yl)-1,2,5-oxadiazole 2-oxides under the action of dibro-moisocyanurate gave 12- and 18-membered macrocyclic systems containing two or three bifurazanyl or furazanylfuroxanyl moieties linked by azo bridges. The latter were oxidized into azoxy groups with Caro's acid in 20% oleum.
A rational method of synthesis and chemical properties of 5-(4-aminofurazan-3-yl)-1-hydroxytetrazole
Stepanov, Andrei I.,Sannikov, Vladimir S.,Dashko, Dmitry V.,Roslyakov, Alexey G.,Astrat’ev, Alexander A.,Stepanova, Elena V.
, p. 746 - 759 (2017)
[Figure not available: see fulltext.] A practical and scalable scheme for the synthesis of 5-(4-aminofurazan-3-yl)-1-hydroxytetrazole was developed, starting from 4-aminofurazan-3-carboxylic acid amidoxime. New methods were proposed for the synthesis of 1
Oxadiazole derivative, preparation method and applications thereof
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Paragraph 0069-0072, (2020/05/30)
The invention relates to an oxadiazole derivative, a preparation method and applications thereof, wherein the oxadiazole derivative has a structure represented by a formula (I), and R1, X and R2 are defined in the specification.
2, 3-dioxygenase inhibitor containing substituted amidino structure as well as preparation method and application thereof
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Paragraph 0019; 0025; 0028-0029, (2020/10/06)
The invention belongs to the field of drug synthesis, and relates to a 1,2,5-oxadiazole compound csubstituted amidino group as shown in a general formula (I) and pharmaceutically acceptable salts thereof, and a preparation method and medical application o
2,3-dioxygenase inhibitor containing thio four-membered ring structure as well as preparation method and application of 2, 3-dioxygenase inhibitor
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Paragraph 0020; 0023-0024, (2020/10/04)
The invention belongs to the field of drug synthesis, and relates to a 1,2,5-oxadiazole compound containing a thio four-membered ring shown in a general formula (I) and pharmaceutically acceptable salts thereof, and a preparation method and medical applic
Design, synthesis, and biological evaluation of 1,2,5-oxadiazole-3-carboximidamide derivatives as novel indoleamine-2,3-dioxygenase 1 inhibitors
Song, Xiaohan,Sun, Pu,Wang, Jiang,Guo, Wei,Wang, Yi,Meng, Ling-hua,Liu, Hong
, (2020/01/23)
Indoleamine 2,3-dioxygenase 1 (IDO1) is the enzyme catalyzing the oxidative metabolism of tryptophan, which accounts for cancer immunosuppression in tumor microenvironment. Several compounds targeting IDO1 have been reported and epacadostat shows strong i
Finding furoxan rings
Chinnam, Ajay Kumar,Imler, Gregory H.,Parrish, Damon A.,Shreeve, Jean'ne M.,Yin, Ping,Yu, Qiong
, p. 5859 - 5864 (2020/04/08)
A furoxan ring is derived from a dinitromethyl group. A plausible mechanism is proposed based on 1H, 13C and 15N NMR spectral analysis where a dinitromethyl group releases one molecule of nitric acid to form an unstable nitrile oxide and its dipole isomer which cyclize to a furoxan ring [3,4-bis(4-nitro-1,2,5-oxadizaol-3-yl)-1,2,5-oxadiazole-N-oxide (5)]. This new method of constructing a furoxan (1,2,5-oxadiazole 2-oxide) ring offers a potentially efficient way to obtain excellent energetic materials. In order to stabilize the dinitromethyl-containing precursor [3-(dinitromethyl)-4-nitro-1,2,5-oxadiazole (4)], a series of new energetic salts was synthesized and fully characterized. These materials exhibit high densities, excellent detonation properties and acceptable sensitivities. For example, the hydrazinium salt 9 has a high density of 1.92 g cm-3, a detonation velocity of 9437 m s-1 and a detonation pressure of 41.3 GPa, which approach those properties of CL-20 (ρ, 2.03 g cm-3; vD, 9406 m s-1; P, 44.6 GPa) and which are superior to those of HMX (ρ, 1.90 g cm-3; vD, 9320 m s-1; P, 39.2 GPa).
IDO inhibitor, composition, preparation method and application thereof
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Paragraph 0057; 0058, (2020/12/31)
The invention provides a class of bridged iodinated cyclohexyl oxadiazole derivatives, and a preparation method thereof, and application of the bridged iodinated cyclohexyl oxadiazole derivatives as IDO inhibitors, and mainly relates to the technical fiel
DEUTERATED INDOLEAMINE 2,3-DIOXYGENASE INHIBITOR AND APPLICATION THEREOF
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Paragraph 0158; 0161-0162, (2020/12/05)
The present invention belongs to the technical field of medicine, and particularly relates to a compound represented by Formula I, a pharmaceutically acceptable salt thereof, and a stereoisomer thereof, R4, R4′, R5, R
Synthesis and in vivo antitumor evaluation of an orally active potent phosphonamidate derivative targeting IDO1/IDO2/TDO
Feng, Xi,Shen, Pei,Wang,Li,Bian, Jinlei
, p. 214 - 223 (2019/07/22)
Targeting Trp-Kyn pathways has been identified as an attractive approach for the cancer immunotherapies. In this study, a novel phosphonamidate containing compound was designed, synthesized and evaluated for its inhibitory activity against key dioxygenase
