5925-93-9Relevant academic research and scientific papers
Electrophilically activated nitroalkanes in synthesis of 3,4-dihydroquinozalines
Aksenov, Alexander V.,Aksenov, Dmitrii A.,Aksenov, Nicolai A.,Grishin, Igor Yu.,Malyuga, Vladimir V.,Nobi, Mezvah A.,Rubin, Michael
, (2021/08/03)
Nitroalkanes activated with polyphosphoric acid serve as efficient electrophiles in reactions with various nucleophilic amines. Strategically placed second functionality allows for the design of annulation reactions enabling preparation of various heterocycles. This strategy was employed to develop an innovative synthetic approach towards 3,4-dihydroquinazolines from readily available 2-(aminomethyl)anilines.
Property Focused Structure-Based Optimization of Small Molecule Inhibitors of the Protein-Protein Interaction between Menin and Mixed Lineage Leukemia (MLL)
Borkin, Dmitry,Pollock, Jonathan,Kempinska, Katarzyna,Purohit, Trupta,Li, Xiaoqin,Wen, Bo,Zhao, Ting,Miao, Hongzhi,Shukla, Shirish,He, Miao,Sun, Duxin,Cierpicki, Tomasz,Grembecka, Jolanta
, p. 892 - 913 (2016/02/23)
Development of potent small molecule inhibitors of protein-protein interactions with optimized druglike properties represents a challenging task in lead optimization process. Here, we report synthesis and structure-based optimization of new thienopyrimidine class of compounds, which block the protein-protein interaction between menin and MLL fusion proteins that plays an important role in acute leukemias with MLL translocations. We performed simultaneous optimization of both activity and druglike properties through systematic exploration of substituents introduced to the indole ring of lead compound 1 (MI-136) to identify compounds suitable for in vivo studies in mice. This work resulted in the identification of compound 27 (MI-538), which showed significantly increased activity, selectivity, polarity, and pharmacokinetic profile over 1 and demonstrated a pronounced effect in a mouse model of MLL leukemia. This study, which reports detailed structure-activity and structure-property relationships for the menin-MLL inhibitors, demonstrates challenges in optimizing inhibitors of protein-protein interactions for potential therapeutic applications.
Synthesis and antiproliferative activity of 4-substituted-piperazine-1- carbodithioate derivatives of 2,4-diaminoquinazoline
Cao, Sheng-Li,Han, Ying,Yuan, Chong-Zhen,Wang, Yao,Xiahou, Zhi-Kai,Liao, Ji,Gao, Rui-Ting,Mao, Bei-Bei,Zhao, Bao-Li,Li, Zhong-Feng,Xu, Xingzhi
, p. 401 - 409 (2013/07/27)
A novel series of 4-substituted-piperazine-1-carbodithioate derivatives of 2,4-diaminoquinazoline were synthesized and tested for their antiproliferative activities against five human cancer cell lines including A549 (lung cancer), MCF-7 (breast adenocarcinoma), HeLa (cervical carcinoma), HT29 and HCT-116 (colorectal cancer). Most of the synthesized compounds showed broad spectrum antiproliferative activity (IC50 1.47-11.83 μM), of which 8f, 8m and 8q were the most active members with IC50 values in the range of 1.58-2.27, 1.84-3.27 and 1.47-4.68 μM against five cancer cell lines examined, respectively. Further investigations revealed that compounds 8f, 8m and 8q exhibited weak inhibition against dihydrofolate reductase and no activity against thymidylate synthase, while induced DNA damage and activated the G2/M checkpoint in HCT-116 cells.
A cooperative catalytic system of platinum/iridium alloyed nanoclusters and a dimeric catechol derivative: An efficient synthesis of quinazolines through a sequential aerobic oxidative process
Yuan, Hao,Yoo, Woo-Jin,Miyamura, Hiroyuki,Kobayashi, Shu
supporting information, p. 2899 - 2904 (2013/01/15)
A cooperative catalytic system of heterogeneous polymer-supported bi-metallic platinum/iridium (Pt/Ir) alloyed nanoclusters and 5,5′,6,6′-tetrahydroxy-3,3,3′,3′-tetramethyl-1, 1′-spiro-bisindane (TTSBI) enabled the facile preparation of quinazoline derivatives with low catalyst loadings and broad substrate scope under mild aerobic oxidative conditions. The ability to perform the reaction in gram-scale and under open-air conditions highlights the synthetic application of this cooperative catalytic system. Copyright
Synthesis of benzotriazine and aryltriazene derivatives starting from 2-azidobenzonitrile derivatives
Nakhai, Azadeh,Stensland, Birgitta,Svensson, Per H.,Bergman, Jan
experimental part, p. 6588 - 6599 (2011/02/26)
3-Substituted 3,4-dihydro-4-imino-1,2,3-benzotriazine derivatives 7 were formed from 2-azidobenzonitriles 4 as starting materials on treatment with Grignard or lithium organic reagents. In some cases these procedures gave aryltriazenes 10 and 11 as products. All compounds were identified by NMR spectroscopy and the structures of three products, namely 7a, 10a and 11i, were corroborated by X-ray crystallography. The reactions of 2-azidobenzonitrile derivatives with Grignard reagents have been investigated. These reactions, depending on the type of Grignard reagent and the substituents on the 2-azidobenzonitrile derivatives, resulted in benzotriazines and triazenes. Copyright
MODULATION OF CHEMOSENSORY RECEPTORS AND LIGANDS ASSOCIATED THEREWITH
-
Page/Page column 60, (2009/01/20)
The present invention provides screening methods for identifying modifiers of chemosensory receptors and their ligands, e.g., by determining whether a test entity is suitable to interact with one or more interacting sites within the Venus flytrap domains of the chemosensory receptors as well as modifiers capable of modulating chemosensory receptors and their ligands.
Acetonitrile-mediated synthesis of 2,4-dichloroquinoline from 2-ethynylaniline and 2,4-dichloroquinazoline from anthranilonitrile
Lee, Jae Hak,Lee, Byoung Se,Shin, Hyunik,Nam, Do Hyun,Chi, Dae Yoon
, p. 65 - 68 (2007/10/03)
2,4-Dichloroquinolines and 2,4-dichloroquinazolines were synthesized from 2-ethynylanilines and anthranilonitriles, respectively, using diphosgene in acetonitrile and heating at 130 °C or 150 °C for 12 hours. This reaction was applied to the synthesis of 4,6-dichloropyrazolo[3,4-d]pyrimidine (dichloro-9H-isopurine). The postulated mechanism is also described. Georg Thieme Verlag Stuttgart.
Fe/Cr- and Co/Cr-mediated catalytic asymmetric 2-haloallylations of aldehydes
Kurosu, Michio,Lin, Mei-Huey,Kishi, Yoshito
, p. 12248 - 12249 (2007/10/03)
The first example to couple aldehydes and 3-bromo-2-halopropenes in a catalytic asymmetric manner is reported. The coupling reaction is effected by the use of a chiral sulfonamide-Cr complex (prepared in situ from 1d, CrBr3, Fe(III) or from Co(II), Et3N, and Mn), TMSCl, and 2,6-lutidine. The method reported here is operationally simple and scalable, furnishing 3-halohomoallylic alcohols with a synthetically useful level of enantiomeric excess. Copyright
Process for synthesizing antifolates
-
Page 4, (2010/02/06)
This invention relates to a process for synthesizing certain folic acid analogues, which are useful in treating cancer, inflammatory diseases, autoimmune diseases, and are commonly referred to as antifolates. The process employs improved steps for annulation, derivatization and addition reactions to produce the described antifolates from commonly available starting materials.
