Day: December 30, 2022

Synthesis and biological evaluation of diaryl urea derivatives as FLT3 inhibitors was written by Zhang, Qing;Zhao, Kuantao;Zhang, Lixun;Jiao, Xiaoyu;Zhang, Yongjie;Tang, Chunlei. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2020.Quality Control of 3-(tert-Butyl)isoxazol-5-amine This article mentions the following:

As a class III receptor tyrosine kinase (RTK), FMS-like tyrosine kinase 3 (FLT3) is always overexpressed in many cases of acute leukemia. This paper studies the structure-based synthesis and biol. evaluation of diaryl urea derivatives as FLT3 inhibitors. Encouragingly, compounds 1-(3-(tert-butyl)isoxazol-5-yl)-3-(4-(7-methoxybenzo[d]imidazo[2,1-b]thiazol-2-yl)phenyl)urea , 1-(3-(tert-butyl)isoxazol-5-yl)-3-(4-(7-(2-morpholinoethoxy)benzo[d]imidazo[2,1-b]thiazol-2-yl)phenyl)urea , 1-(5-(tert-butyl)isoxazol-3-yl)-3-(2-(4-(2-morpholinoethoxy)phenyl)benzo[d]imidazo[2,1-b]thiazol-7-yl)urea , and 1-(3-(tert-butyl)isoxazol-5-yl)-3-(2-(4-(2-morpholinoethoxy)phenyl)benzo[d]imidazo[2,1-b]thiazol-7-yl)urea showed excellent biol. activities in a low nanomolar range. In particular, compound 1-(3-(tert-butyl)isoxazol-5-yl)-3-(4-(7-(2-morpholinoethoxy)benzo[d]imidazo[2,1-b]thiazol-2-yl)phenyl)urea demonstrated significant inhibitory potency against FLT3-ITD (IC₅₀ = 5.60 nM) and better antiproliferative activity than quizartinib against MV4-11 cell line (IC₅₀ = 0.176 nM). Compound 1-(3-(tert-butyl)isoxazol-5-yl)-3-(4-(7-(2-morpholinoethoxy)benzo[d]imidazo[2,1-b]thiazol-2-yl)phenyl)urea for the treatment of acute myeloid leukemia could be very promising. In the experiment, the researchers used many compounds, for example, 3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9Quality Control of 3-(tert-Butyl)isoxazol-5-amine).

3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9) belongs to isoxazole derivatives. Isoxazole are described as inhibitors of acetylcholinesterase (AChE). Isoxazole ligands bind to and inhibit the Sxc- antiporter. Some alternative routes for the synthesis of isoxazoles have also been developed and reported. The 2-benzoyl-2-halo-2H-azirines provide 4-haloisoxazoles in good yields after heating in toluene at reflux temperature.Quality Control of 3-(tert-Butyl)isoxazol-5-amine

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

C-H chlorination of (hetero)anilines via photo/organo co-catalysis was written by Xie, Wuchen;Wang, Meng;Yang, Siyu;Chen, Yadong;Feng, Jie;Huang, Yatian. And the article was included in Organic & Biomolecular Chemistry in 2022.Name: 3-(tert-Butyl)isoxazol-5-amine This article mentions the following:

Herein, a photo-redox and organo co-catalyzed chlorination method for anilines to gave chloro-anilines ArNR¹R² [Ar = 4-ClC₆H₄, 3,4-di-Cl-5-FC₆H₂, 4-Cl-2,5-di-FC₆H₂, etc.; R¹ = H, Me; R² = H, Me, C(O)Me, Ph, pyrimidin-2-yl; R¹R² = (CH₂)₂N(CH₃)(CH₂)₂] was disclose. This method had great substrate generality and excellent mono-chlorination selectivity. Another merit of this method was the late-stage modification of drug mols., which would be useful in medicinal chem. In the experiment, the researchers used many compounds, for example, 3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9Name: 3-(tert-Butyl)isoxazol-5-amine).

3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9) belongs to isoxazole derivatives. An isoxazolyl group is found in many beta-lactamase-resistant antibiotics, such as cloxacillin, dicloxacillin and flucloxacillin. Isoxazole can be synthesised via a variety of methods. Examples include via a 1,3-dipolar cycloaddition of nitrile oxides with alkynes.Name: 3-(tert-Butyl)isoxazol-5-amine

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Drug Discovery against Psoriasis: Identification of a New Potent FMS-like Tyrosine Kinase 3 (FLT3) Inhibitor, 1-(4-((1H-Pyrazolo[3,4-d]pyrimidin-4-yl)oxy)-3-fluorophenyl)-3-(5-(tert-butyl)isoxazol-3-yl)urea, That Showed Potent Activity in a Psoriatic Animal Model was written by Li, Guo-Bo;Ma, Shuang;Yang, Ling-Ling;Ji, Sen;Fang, Zhen;Zhang, Guo;Wang, Li-Jiao;Zhong, Jie-Min;Xiong, Yu;Wang, Jiang-Hong;Huang, Shen-Zhen;Li, Lin-Li;Xiang, Rong;Niu, Dawen;Chen, Ying-Chun;Yang, Sheng-Yong. And the article was included in Journal of Medicinal Chemistry in 2016.Category: isoxazole This article mentions the following:

Psoriasis is a chronic T-cell-mediated autoimmune disease, and FMS-like tyrosine kinase 3 (FLT3) has been considered as a potential mol. target for the treatment of psoriasis. In this investigation, structural optimization was performed on a lead compound, 1-(4-(1H-pyrazolo[3,4-d]pyrimidin-4-yloxy)phenyl)-3-(4-chloro-3- (trifluoromethyl)phenyl)urea, which showed a moderate inhibitory activity against FLT3. A series of pyrazolo[3,4-d]pyrimidine derivatives were synthesized, and structure-activity relationship anal. led to the discovery of a number of potent FLT3 inhibitors. One of the most active compounds, 1-(4-(1H-pyrazolo[3,4-d]pyrimidin-4-yloxy)-3-fluorophenyl)-3-(5-tert-butylisoxazol-3-yl)urea (I), was then chosen for in-depth anti-psoriasis studies because this compound displayed the highest potency in a preliminary anti-psoriasis test. Compound I exhibited significant anti-psoriatic effects in the K14-VEGF transgenic mouse model of psoriasis, and no recurrence was found 15 days later after the last administration. Detailed mechanisms of action of compound I were also investigated. Collectively, compound I could be a potential drug candidate for psoriasis treatment. In the experiment, the researchers used many compounds, for example, 3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9Category: isoxazole).

3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9) belongs to isoxazole derivatives. Isoxazoles are aromatic heterocycles containing an N–O bond. Isoxazoles are commonly used as enaminoketone or β-diketone surrogate. The electrophilic cyclization of various 2-alkynone O-methyl oximes with a wide range of substrates such as ICl, I2, Br2, PhSeBr, etc. provides a variety of 3,4,5-trisubstituted isoxazoles in good to excellent yields.Category: isoxazole

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Design and Synthesis of New Thiophene/Thieno[2,3-d]pyrimidines along with Their Cytotoxic Biological Evaluation as Tyrosine Kinase Inhibitors in Addition to Their Apoptotic and Autophagic Induction was written by Elmongy, Elshaymaa I.;Attallah, Nashwah G. M.;Altwaijry, Najla;AlKahtani, Manal Mubarak;Henidi, Hanan Ali. And the article was included in Molecules in 2022.Synthetic Route of C7H12N2O This article mentions the following:

This work describes the synthesis and anticancer activity against kinase enzymes of newly designed thiophene and thieno[2,3-d]pyrimidines I [R = 2-(2-chloroacetyl)hydrazino, (3-methyl-2,5-dioxo-pyrrol-1-yl)amino, 2-[2-[(5-tert-butylisoxazol-3-yl)amino]acetyl]hydrazino, etc.] and II [R¹ = Cl, (5-tert-butylisoxazol-3-yl)amino, (3-tert-butylisoxazol-5-yl)amino] along with their potential to activate autophagic and apoptotic cell death in cancer cells. The designed compounds were scanned for their affinity for kinases. The results were promising with affinity ranges from 46.7% to 13.3%. Mol. docking studies were performed, and the compounds were then screened for their antiproliferative effects. Interestingly, compounds I [R = 2-(2-chloroacetyl)hydrazino, (3-methyl-2,5-dioxo-pyrrol-1-yl)amino] resulted in higher cytotoxic effects than the reference standard against MCF-7 and HepG-2. The compounds were evaluated for their induction of apoptosis and/or necrosis on HT-29 and HepG-2. Three compounds induced significant early apoptosis compared to untreated control HT-29 cells, and four derivatives were more significant compared to untreated HepG-2 cells. Further investigated the effect of four compounds on the autophagy process within HT-29, HepG-2, and MCF-7 cells with flow cytometry. Similar to the apoptosis results, I [R = 2-(2-chloroacetyl)hydrazino] showed the highest autophagic induction among all compounds The potential inhibitory activity of the synthesized compounds on kinases was assessed. Screened compounds showed inhibition activity ranging from 41.4% to 83.5%. Compounds recorded significant inhibition were further investigated for their specific FLT3 kinase inhibitory activity. Noticeably, I [R = 2-(2-chloroacetyl)hydrazino] exhibited the highest inhibitory activity against FLT3. In the experiment, the researchers used many compounds, for example, 3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9Synthetic Route of C7H12N2O).

3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9) belongs to isoxazole derivatives. Isoxazoles also form the basis for a number of drugs, including the COX-2 inhibitor valdecoxib (Bextra) and a neurotransmitter agonist AMPA. The electrophilic cyclization of various 2-alkynone O-methyl oximes with a wide range of substrates such as ICl, I2, Br2, PhSeBr, etc. provides a variety of 3,4,5-trisubstituted isoxazoles in good to excellent yields.Synthetic Route of C7H12N2O

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Synthesis and biological evaluation of novel 5,6-dihydrobenzo[h]quinazoline derivatives as FLT3 inhibitors was written by Ding, Lei;Zhang, Qing;Zhao, Kuantao;Jiao, Xiaoyu;Zhou, Ying;Fan, Weizheng;Tang, Chunlei. And the article was included in Chemical Biology & Drug Design in 2022.Recommanded Product: 3-(tert-Butyl)isoxazol-5-amine This article mentions the following:

Fms-like tyrosine kinase 3 (FLT3) is widely expressed and often mutated in acute myeloid leukemia (AML), which makes it an important target for the treatment of AML. The structure-based synthesis and biol. evaluation of 5,6-dihydrobenzo[h]quinazoline derivatives as FLT3 inhibitors have been studied in this paper. Compound I derivatives (X and Y = N, CH, CF, or CCH₃ and R = isoxazole derivatives) displayed comparable inhibitory potency against FLT3-ITD and showed remarkable antiproliferative activities against MV4-11. In the experiment, the researchers used many compounds, for example, 3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9Recommanded Product: 3-(tert-Butyl)isoxazol-5-amine).

3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9) belongs to isoxazole derivatives. Isoxazole rings are found in some natural products, such as ibotenic acid and muscimol. As with isoxazolines, isoxazoles may be cleaved using low-valent titanium obtained from the Kulinkovich reaction.This procedure affords enaminoketones from 2,4-substituted isoxazoles.Recommanded Product: 3-(tert-Butyl)isoxazol-5-amine

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

ClTi(OⁱPr)₃-Promoted Reductive Amination on the Solid Phase: Combinatorial Synthesis of a Biaryl-Based Sulfonamide Library was written by Gutierrez, Corey D.;Bavetsias, Vassilios;McDonald, Edward. And the article was included in Journal of Combinatorial Chemistry in 2008.Product Details of 59669-59-9 This article mentions the following:

A combinatorial library (9 amines × 7 sulfonyl chlorides × 13 boronic acids = 819 compounds) was produced on solid support in a four-step sequence, i.e., ClTi(OⁱPr)₃-promoted reductive amination, sulfonylation of the resin-bound amine, Suzuki cross-coupling, and acid-mediated cleavage. The library members (e.g. I) were obtained in moderate quantity (1-8 mg) with over 70% of the sampled products greater than 90% pure according to LC-MS anal. In the experiment, the researchers used many compounds, for example, 3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9Product Details of 59669-59-9).

3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9) belongs to isoxazole derivatives. Isoxazoles present in various natural products and synthetic compounds of biological importance like antibacterial, antagonists, antiinflammatory, analgesics, and also show the applications in functional materials. Isoxazole can be synthesised via a variety of methods. Examples include via the reaction of hydroxylamine with 1,3-diketones or derivatives of propiolic acid.Product Details of 59669-59-9

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Radical difluoromethylthiolation of aromatics enabled by visible light was written by Li, Jianbin;Zhu, Dianhu;Lv, Leiyang;Li, Chao-Jun. And the article was included in Chemical Science in 2018.Product Details of 59669-59-9 This article mentions the following:

An efficient route to access a valuable catalog of difluoromethyl thioethers RSCHF₂ [R = 1-Me-2-pyrrolyl, 3-indolyl, 2,4,6-(MeO)₃C₆H₂, etc.] via visible-light mediated direct introduction of a difluoromethylthio group (-SCF₂H) to arenes RH under metal-free and mild conditions was reported. This light-mediated protocol successfully converted a broad spectrum of arenes and heteroarenes to difluoromethyl thioethers in the absence of noble metals and stoichiometric amounts of additives. In the experiment, the researchers used many compounds, for example, 3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9Product Details of 59669-59-9).

3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9) belongs to isoxazole derivatives. An isoxazolyl group is found in many beta-lactamase-resistant antibiotics, such as cloxacillin, dicloxacillin and flucloxacillin. Isoxazoles are potent isosteres of pyridine and have been found to inhibit voltage-gated sodium channels for pain control, for the construction of tetracycline antibiotic derivatives, and as a therapeutic agent for depression.Product Details of 59669-59-9

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Synthesis and biological evaluation of new series of quinazoline derivatives as EGFR/HER2 dual-target inhibitors was written by Jiao, Xiaoyu;Zhang, Qing;Zhang, Yue;Shao, Junlan;Ding, Lei;Tang, Chunlei;Feng, Bainian. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2022.Synthetic Route of C7H12N2O This article mentions the following:

It is generally believed that EGFR/HER2 dual-target inhibitors may overcome the resistance of EGFR TKIs caused by HER2 overexpression. The structure-based synthesis and biol. evaluation of quinazoline derivatives as EGFR/HER2 dual-target inhibitors has been studied in this paper. I, II, III, IV displayed comparable inhibitory potency against EGFR and HER2 and I showed remarkable antiproliferative activities against NCI-H358/PC-9/Calu-3/NCI-H1781 (EGFR IC₅₀ = 0.30 nM, HER2 IC₅₀ = 6.07 nM, NCI-H358 GI₅₀ = 23.30 nM, PC-9 GI₅₀ = 1.95 nM, Calu-3 GI₅₀ = 23.13 nM NCI-H1781 GI₅₀ = 41.61 nM). In the experiment, the researchers used many compounds, for example, 3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9Synthetic Route of C7H12N2O).

3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9) belongs to isoxazole derivatives. Isoxazoles are aromatic heterocycles containing an N–O bond. The weakness of this bond allows the ring opening of these heterocycles under reductive conditions. Isoxazole can be synthesised via a variety of methods. Examples include via the reaction of hydroxylamine with 1,3-diketones or derivatives of propiolic acid.Synthetic Route of C7H12N2O

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Practical synthesis of 3-amino-5-tert-butylisoxazole from 4,4-dimethyl-3-oxopentanenitrile with hydroxylamine was written by Takase, Akira;Murabayashi, Akira;Sumimoto, Shinzaburo;Ueda, Shiro;Makisumi, Yasuo. And the article was included in Heterocycles in 1991.Computed Properties of C7H12N2O This article mentions the following:

A good yield of 3-amino-5-tert-butylisoxazole (I; R = CMe₃) was obtained regioselectively from a reaction of 4,4-dimethyl-3-oxopentanenitrile with hydroxylamine in aqueous solution adjusted to weakly basic, followed by treatment of the resulting 4,4-dimethyl-3-oxopentaneamidoxime with hydrochloride acid. I (R = Me₂CH, Ph) were prepared in poor yields (27-38%) by the same procedure starting from 4-methyl-3-oxopentanenitrile and benzoylacetonitrile, resp. In the experiment, the researchers used many compounds, for example, 3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9Computed Properties of C7H12N2O).

3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9) belongs to isoxazole derivatives. Isoxazoles are aromatic heterocycles containing an N–O bond. Isoxazoles are commonly used as enaminoketone or β-diketone surrogate. Isoxazoles are potent isosteres of pyridine and have been found to inhibit voltage-gated sodium channels for pain control, for the construction of tetracycline antibiotic derivatives, and as a therapeutic agent for depression.Computed Properties of C7H12N2O

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem

Discovery and optimization of a highly efficacious class of 5-aryl-2-aminopyridines as FMS-like tyrosine kinase 3 (FLT3) inhibitors was written by Liu, Gang;Abraham, Sunny;Liu, Xing;Xu, Shimin;Rooks, Allison M.;Nepomuceno, Ron;Dao, Alan;Brigham, Daniel;Gitnick, Dana;Insko, Darren E.;Gardner, Michael F.;Zarrinkar, Patrick P.;Christopher, Ron;Belli, Barbara;Armstrong, Robert C.;Holladay, Mark W.. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2015.SDS of cas: 59669-59-9 This article mentions the following:

Based on a putative binding mode of quizartinib, a potent FMS-like tyrosine kinase 3 (FLT3) inhibitor in Phase III clin. development, the authors have designed de novo a simpler aminopyridine-based hinge binding motif. Further optimization focusing on maximizing in vivo efficacy and minimizing CYP3A4 time-dependent inhibition resulted in a highly efficacious compound I in tumor xenograft model for further preclin. development. In the experiment, the researchers used many compounds, for example, 3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9SDS of cas: 59669-59-9).

3-(tert-Butyl)isoxazol-5-amine (cas: 59669-59-9) belongs to isoxazole derivatives. Isoxazoles also form the basis for a number of drugs, including the COX-2 inhibitor valdecoxib (Bextra) and a neurotransmitter agonist AMPA. The most common methods for N–O bond cleavage in isoxazoles are hydrogenation with palladium or platinum catalysts or with Raney Ni. Recent developments have shown that Mo(CO)6 efficiently cleaves the N–O bond in isoxazoles.SDS of cas: 59669-59-9

Referemce:
Isoxazole – Wikipedia,
Isoxazole | C3H3NO – PubChem