Day: October 18, 2022

In 2022,Lu, Shaoyong; Fu, Zhong; Li, Fu; Weng, Kangkang; Zhou, Likuan; Zhang, Lipeng; Yang, Yuchen; Qiu, Hengwei; Liu, Dan; Qing, Wenyue; Ding, He; Sheng, Xing; Chen, Menglu; Tang, Xin; Duan, Lian; Liu, Wenyong; Wu, Longjia; Yang, Yixing; Zhang, Hao; Li, Jinghong published an article in Angewandte Chemie, International Edition. The title of the article was 《Beyond a Linker: The Role of Photochemistry of Crosslinkers in the Direct Optical Patterning of Colloidal Nanocrystals》.Electric Literature of C6H11NO The author mentioned the following in the article:

Surface chem. mediated direct optical patterning represents an emerging strategy for incorporating colloidal nanocrystals (NCs) in integrated optoelectronic platforms including displays and image sensors. However, the role of photochem. of crosslinkers and other photoactive species in patterning remains elusive. Here we show the design of nitrene- and carbene-based photocrosslinkers can strongly affect the patterning capabilities and photophys. properties of NCs, especially quantum dots (QDs). Their role beyond phys. linkers stems from structure-dictated electronic configuration, energy alignment and associated reaction kinetics and thermodn. Patterned QD layers with designed carbene-based crosslinkers fully preserve their photoluminescent and electroluminescent properties. Patterned light emitting diodes (QLEDs) show a maximum external quantum efficiency of ∼12 % and lifetime over 4800 h, among the highest for reported patterned QLEDs. These results would guide the rational design of photoactive species in NC patterning and create new possibilities in the monolithic integration of NCs in high-performance device platforms. The experimental part of the paper was very detailed, including the reaction process of 1-Methyl-4-piperidone(cas: 1445-73-4Electric Literature of C6H11NO)

1-Methyl-4-piperidone(cas: 1445-73-4) is a member of piperidine. Piperidine is ubiquitous structural motif widely occurred in diverse synthetically and naturally occurring bioactive molecules. Piperidines are an immensely important class of compounds medicinally: the piperidine ring is the most common heterocyclic subunit among FDA approved drugs.Electric Literature of C6H11NO

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

COA of Formula: C7H15NOIn 2013 ,《Structure-based discovery of cellular-active allosteric inhibitors of FAK》 appeared in Bioorganic & Medicinal Chemistry Letters. The author of the article were Tomita, Naoki; Hayashi, Yoko; Suzuki, Shinkichi; Oomori, Yoshimasa; Aramaki, Yoshio; Matsushita, Yoshihiro; Iwatani, Misa; Iwata, Hidehisa; Okabe, Atsutoshi; Awazu, Yoshiko; Isono, Osamu; Skene, Robert J.; Hosfield, David J.; Miki, Hiroshi; Kawamoto, Tomohiro; Hori, Akira; Baba, Atsuo. The article conveys some information:

In order to develop potent and selective focal adhesion kinase (FAK) inhibitors, synthetic studies on pyrazolo[4,3-c][2,1]benzothiazines targeted for the FAK allosteric site were carried out. Based on the X-ray structural anal. of the co-crystal of the lead compound, 8-(4-ethylphenyl)-5-methyl-1,5-dihydropyrazolo[4,3-c][2,1]benzothiazine 4,4-dioxide 1 with FAK, we designed and prepared 1,5-dimethyl-1,5-dihydropyrazolo[4,3-c][2,1]benzothiazin derivatives which selectively inhibited kinase activity of FAK without affecting seven other kinases. The optimized compound, N-(4-tert-butylbenzyl)-1,5-dimethyl-1,5-dihydropyrazolo[4,3-c][2,1]benzothiazin-8-amine 4,4-dioxide 30 possessed significant FAK kinase inhibitory activities both in cell-free (IC50 = 0.64 μM) and in cellular assays (IC50 = 7.1 μM). These results clearly demonstrated a potential of FAK allosteric inhibitors as antitumor agents. The experimental part of the paper was very detailed, including the reaction process of 2-(Piperidin-4-yl)ethanol(cas: 622-26-4COA of Formula: C7H15NO)

2-(Piperidin-4-yl)ethanol(cas: 622-26-4) have been used as an intermediate in the synthetic preparation of cellular-active allosteric inhibitors of FAKCOA of Formula: C7H15NO

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

《Diffusion of reduced arecoline and arecaidine through human vaginal and buccal mucosa》 was written by Van der Bijl, P.; Van Eyk, A. D.; Van Wyk, C. W.; Stander, I. A.. Category: piperidines And the article was included in Journal of Oral Pathology & Medicine on April 30 ,2001. The article conveys some information:

Because alkaloids from areca nut, arecoline and arecaidine, have been implicated in the development of oral submucous fibrosis, the authors determined their diffusion kinetics through human buccal and vaginal mucosa. Four clin. healthy vaginal mucosa specimens (mean patient age ± standard deviation: 47±15 yr; age range: 31-60 yr) and 4 buccal mucosa specimens from 2 male patients and 2 female patients (mean patient age ± standard deviation: 31±9 yr; age range: 17-53 yr) were obtained during surgery. In vitro flux rates of reduced arecoline and arecaidine (r-arecoline and r-arecaidine) were determined by use of a flow-through diffusion apparatus Anal. of variance, a Duncan multiple range test, and an unpaired t-test were used to determine steady state kinetics and flux differences over time intervals. Although statistically significant differences were observed between flux values for both alkaloids and tissues at certain time points, these were not considered to be of biol. (clin.) significance. However, the flux rates across both mucosa of r-arecoline were significantly higher statistically than those of r-arecaidine. The findings demonstrated the differences in the diffusion kinetics between r-arecoline and r-arecaidine across human buccal and vaginal mucosa, an observation that could be explained in terms of their ionization characteristics. Addnl., the results obtained further support the hypothesis that human vaginal mucosa can be used as a model for buccal mucosa in studies of permeability to various chem. compounds The results came from multiple reactions, including the reaction of Methyl 1-methylpiperidine-3-carboxylate(cas: 1690-72-8Category: piperidines)

Methyl 1-methylpiperidine-3-carboxylate(cas: 1690-72-8) is a member of piperidine. Piperidine-containing compounds are also frequently employed in synthesis as ligands or auxiliaries. Accordingly, many efforts have been devoted to the development of novel methods for the synthesis of these compounds over the years.Category: piperidines

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

《Molecular Tuning of a Vitamin E-Scaffold pH-Sensitive and Reductive Cleavable Lipid-like Material for Accelerated in Vivo Hepatic siRNA Delivery》 was written by Akita, Hidetaka; Noguchi, Yuki; Hatakeyama, Hiroto; Sato, Yusuke; Tange, Kota; Nakai, Yuta; Harashima, Hideyoshi. Recommanded Product: 2-(Piperidin-4-yl)ethanolThis research focused onvitamin E pH reductive cleavable lipid liver siRNA targeting; drug delivery system; liposomal nanoparticle; liver; siRNA. The article conveys some information:

A lipid nanoparticle (LNP) composed of a series of SS-cleavable and pH-activated lipid-like materials (ssPalm) was previously developed as a platform of a gene delivery system. A tertiary amine and disulfide bonding were employed to destabilize the endosomal membrane and for intracellular collapse. We report herein on the development of a hepatocyte-targeting siRNA carrier by the mol. tuning of the hydrophobic scaffold, and tertiary amine structures. The gene knockdown activity against a hepatocyte-specific marker (factor VII: FVII) was improved when a more fat-soluble vitamin (vitamin E) was employed as a hydrophobic scaffold. Moreover, to allow the tertiary amines to accept protons by sensing a slight change in endosomal acidification, its structural flexibility was minimized by fixing it in a piperidine structure, and the distance between the surface of the particle to the ternary amine was increased. As a result, the pKa value was increased to the approx. 6.18 depending on its distance, while the pKa reached plateau when the tertiary amine was linked by an excess number of linear carbon chains. The pH-dependent membrane destabilization activity, as assessed by a hemolysis assay, was increased in parallel with the pKa value. Moreover, the gene knockdown activity was improved in parallel with hemolytic activity. Finally, further optimization of the lipid/siRNA ratio, and the use of chem. (2′-fluoro) modified siRNA synergistically improved the gene knockdown efficacy to an ED (ED50) of 0.035 mg/kg. The developed ssPalm represents a promising platform for use as a hepatocyte-targeting siRNA carrier. The results came from multiple reactions, including the reaction of 2-(Piperidin-4-yl)ethanol(cas: 622-26-4Recommanded Product: 2-(Piperidin-4-yl)ethanol)

2-(Piperidin-4-yl)ethanol(cas: 622-26-4) have been used as an intermediate in the synthetic preparation of cellular-active allosteric inhibitors of FAKRecommanded Product: 2-(Piperidin-4-yl)ethanol

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

《Synthesis and in vitro antioxidant and antimicrobial activities of novel 3-alkyl(aryl)-4-[3-methoxy-4-(2-furylcarbonyloxy)-benzylidenamino]-4,5-dihydro-1H-1,2,4-triazol-5-ones, and their N-acetyl, N-Mannich base derivatives》 was written by Manap, Sevda. Formula: C6H12N2O And the article was included in Journal of the Iranian Chemical Society on April 30 ,2022. The article conveys some information:

The reactions of 3-alkyl(aryl)-4-amino-4,5-dihydro-1H-1,2,4-triazol-5-ones I (R = Me, Ph, Bn, etc.) with 3-methoxy-4-(2-furylcarbonyloxy)-benzaldehyde formed 3-alkyl(aryl)-4-[3-methoxy-4-(2-furylcarbonyloxy)-benzylidenamino]-4,5-dihydro-1H-1,2,4-triazol-5-ones II (R1 = H). Moreover, their five N-acetyl derivatives II (R1 = acetyl) were synthesized. Besides, compounds II (R1 = morpholin-4-yl-methyl)/II (R1 = N-methylpiperazinyl)/II (R1 = (4-carbamoylpiperidin-1-yl)methyl)/III were obtained by Mannich reaction between compounds II (R1 = H) and morpholine/N-methylpiperazine/piperidine-4-carboxyamide/piperazine in the presence of formaldehyde. Also, these compounds were evaluated for their in vitro antioxidant activity. Furthermore, in vitro antibacterial activity of the compounds was screened against six bacteria.Piperidine-4-carboxamide(cas: 39546-32-2Formula: C6H12N2O) was used in this study.

Piperidine-4-carboxamide(cas: 39546-32-2) belongs to anime. The reaction of alkyl halides, R―X, where X is a halogen, or analogous reagents with ammonia (or amines) is useful with certain compounds. Not all alkyl halides are effective reagents; the reaction is sluggish with secondary alkyl groups and fails with tertiary ones. Its usefulness is largely confined to primary alkyl halides (those having two hydrogen atoms on the reacting site).Formula: C6H12N2O

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Synthetic Route of C7H11NO4On March 15, 2005, Turner, Jennifer J.; Gerrard, Juliet A.; Hutton, Craig A. published an article in Bioorganic & Medicinal Chemistry. The article was 《Heterocyclic inhibitors of dihydrodipicolinate synthase are not competitive》. The article mentions the following:

A series of piperidine- and pyridine-2,6-dicarboxylate derivatives has been evaluated as potential inhibitors of dihydrodipicolinate synthase (DHDPS). The compounds were designed with oxygen functionality at the C-4 position in order to mimic the putative enzyme product HTHDP. Most compounds displayed weak-moderate inhibition of DHDPS. Addnl., the most potent inhibitors were shown not to be competitive, indicating they do not bind at the active site. Discrepancies between the two common assay systems-the imidazole assay and the coupled assay-were observed which are attributed to inherent problems in the imidazole assay, leading to artifactually low Ki measurements. In the experiment, the researchers used Cis-piperidine-2,6-dicarboxylic acid(cas: 59234-40-1Synthetic Route of C7H11NO4)

Cis-piperidine-2,6-dicarboxylic acid(cas: 59234-40-1) is a member of piperidine. Piperidine is ubiquitous structural motif widely occurred in diverse synthetically and naturally occurring bioactive molecules. Piperidines are an immensely important class of compounds medicinally: the piperidine ring is the most common heterocyclic subunit among FDA approved drugs.Synthetic Route of C7H11NO4

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Wu, Qifan; Zhao, Bin; Fan, Zhijin; Guo, Xiaofeng; Yang, Dongyan; Zhang, Nailou; Yu, Bin; Zhou, Shuang; Zhao, Jiabao; Chen, Fan published an article on February 6 ,2019. The article was titled 《Discovery of Novel Piperidinylthiazole Derivatives As Broad-Spectrum Fungicidal Candidates》, and you may find the article in Journal of Agricultural and Food Chemistry.COA of Formula: C6H12N2O The information in the text is summarized as follows:

Oxathiapiprolin is one of the best active fungicides discovered for oomycetes control. To develop a fungicide candidate with a broad spectrum of activity, 22 new piperidinylthiazole derivatives were designed and synthesized. Compound (I) showed the best activity against Pseudoperonospora cubensis (Berk. et Curt.) Rostov and Phytophthora infestans in vivo with 100% and 80% of inhibition, resp., at 1 mg/L, and 72.87% of field efficacy against P. cubensis at 1 g ai/667 m2 validated these results. Compound (II) exhibited a broad spectrum of excellent activity against Sclerotinia sclerotiorum with EC50 = 0.30 mg/L (>10 times more active than oxathiapiprolin and azoxystrobin in vitro), good activity against Botrytis cinerea, Cercospora arachidicola, and Gibberella zeae with EC50 of 14.54, 5.57, and 14.03 mg/L in vitro and against P. cubensis and P. infestans with 60% and 30% inhibition rates, resp., at 1 mg/L in vivo. Mode of action studies by RNA sequencing anal. discovered oxysterol-binding protein (OSBP), chitin synthase (CHS1), and (1,3)-β-glucan synthase (FKS2) as the potent target of II against S. sclerotiorum. Quenching studies validated that OSBP was the same target of both II and oxathiapiprolin; it was quenched by both of them. Our studies discovered isothiazole-containing piperidinylthiazole as an OSBP target-based novel lead for fungicide development. In the part of experimental materials, we found many familiar compounds, such as Piperidine-4-carboxamide(cas: 39546-32-2COA of Formula: C6H12N2O)

Piperidine-4-carboxamide(cas: 39546-32-2) belongs to anime. Amines characteristically form salts with acids; a hydrogen ion, H+, adds to the nitrogen. With the strong mineral acids (e.g., H2SO4, HNO3, and HCl), the reaction is vigorous. Salt formation is instantly reversed by strong bases such as NaOH. Neutral electrophiles (compounds attracted to regions of negative charge) also react with amines; alkyl halides (R′X) and analogous alkylating agents are important examples of electrophilic reagents.COA of Formula: C6H12N2O

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Zuo, Zeping; Chen, Miaomiao; Shao, Xiaoni; Qian, Xinying; Liu, Xiaocong; Zhou, Xia; Xiang, Jiawei; Deng, Pengchi; Li, Yan; Jie, Hui; Liu, Chunqi; Cen, Xiaobo; Xie, Yongmei; Zhao, Yinglan published an article on February 15 ,2020. The article was titled 《Design and biological evaluation of tetrahydropyridine derivatives as novel human GPR119 agonists》, and you may find the article in Bioorganic & Medicinal Chemistry Letters.Electric Literature of C6H12N2O The information in the text is summarized as follows:

A series of novel tetrahydropyridine derivatives were prepared and evaluated using cell-based measurements. Systematic optimization of general structure G-1 led to the identification of compound 4-((4-(1H-tetrazol-1-yl)phenoxy)methyl)-2-(1-(5-ethylpyrimidin-2-yl)1,2,3,6-tetrahydropyridin-4-yl)thiazole (EC50 = 4.9 nM) and 2-(1-(5-ethylpyrimidin-2-yl)-1,2,3,6-tetrahydropyridin-4-yl)-4-((2-fluoro-4(1H-tetrazol-1-yl)phenoxy)methyl)thiazole (EC50 = 8.8 nM) with high GPR119 agonism activity and moderate clog P. Through single and long-term pharmacodynamic experiments, compound 4-((4-(1H-tetrazol-1-yl)phenoxy)methyl)-2-(1-(5-ethylpyrimidin-2-yl)1,2,3,6-tetrahydropyridin-4-yl)thiazole showed a hypoglycemic effect and may have an effect on improving basal metabolic rate in DIO mice. Both in vitro and in vivo tests indicated that compound 4-((4-(1H-tetrazol-1-yl)phenoxy)methyl)-2-(1-(5-ethylpyrimidin-2-yl)1,2,3,6-tetrahydropyridin-4-yl)thiazole was a potential potent GPR119 agonist in allusion to T2DM treatment. The experimental part of the paper was very detailed, including the reaction process of Piperidine-4-carboxamide(cas: 39546-32-2Electric Literature of C6H12N2O)

Piperidine-4-carboxamide(cas: 39546-32-2) belongs to anime. In organic chemistry, amines are compounds and functional groups that contain a basic nitrogen atom with a lone pair. Amines are formally derivatives of ammonia (NH3), wherein one or more hydrogen atoms have been replaced by a substituent such as an alkyl or aryl group (these may respectively be called alkylamines and arylamines; amines in which both types of substituent are attached to one nitrogen atom may be called alkylarylamines).Electric Literature of C6H12N2O

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

In 2014,Gao, Mingzhang; Wang, Min; Zheng, Qi-Huang published 《Concise and high-yield synthesis of T808 and T808P for radiosynthesis of [18F]-T808, a PET tau tracer for Alzheimer’s disease》.Bioorganic & Medicinal Chemistry Letters published the findings.COA of Formula: C7H15NO The information in the text is summarized as follows:

The authentic standard T808 and its corresponding mesylate precursor T808P were synthesized in six steps using Et vinyl ether and trichloroacetyl chloride as starting materials. The overall chem. yields of T808 and T808P were 35% and 52%, resp. [18F]-T808 was synthesized from T808P by the nucleophilic substitution with K[18F]F/Kryptofix 2.2.2 and isolated by HPLC combined with solid-phase extraction (SPE) purification in 35-45% radiochem. yield with 37-370 GBq/μmol specific activity at end of bombardment (EOB). In addition to this study using 2-(Piperidin-4-yl)ethanol, there are many other studies that have used 2-(Piperidin-4-yl)ethanol(cas: 622-26-4COA of Formula: C7H15NO) was used in this study.

2-(Piperidin-4-yl)ethanol(cas: 622-26-4) can be used to synthese ursolic acid derivatives, spiroimidazolidinone NPC1L1 inhibitors, neurokinin-2 receptor antagonists, antagonists for inhibition of platelet aggregation.COA of Formula: C7H15NO

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem