Category: piperidines

Risk-based screening for prioritisation of organic micropollutants in Swedish freshwater was written by Figuiere, Romain;Waara, Sylvia;Ahrens, Lutz;Golovko, Oksana. And the article was included in Journal of Hazardous Materials in 2022.Name: 2-(4-(1-Hydroxy-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butyl)phenyl)-2-methylpropanoic acid The following contents are mentioned in the article:

Concerns about environmental contamination by organic micropollutants (OMPs) are increasing, due to their potential bioaccumulative and toxic properties. This study evaluated the risk posed by OMPs to aquatic ecosystems in Swedish freshwaters. The assessment was based on measured environmental concentrations (MEC) of OMPs in surface waters upstream and downstream of Swedish wastewater treatment plants (WWTPs). A novel optimized risk quotient (RQf) was used to identify potential high-risk substances in the aquatic environment. A secondary objective was to assess the impact of WWTP effluent on aquatic ecosystems using a novel impact factor (I) based on the risk quotient (RQ). Among the 126 substances investigated, four compounds (metformin, N,N-dimethyltetradecylamine, oxazepam, and venlafaxine) were identified as likely to pose a risk to aquatic ecosystems in Swedish surface waters (RQf>1), and five compounds (clindamycin, gemfibrozil, sertraline, o-desmethylvenlafaxine, and diclofenac) were identified as posing a moderate risk to aquatic ecosystems ( 0.1 <RQf<1). WWTP effluent appeared to pose an environmental risk for all recipient sites, but the impact of calculated RQ was site-specific. These results can be used by authorities to prioritise OMPs and contaminated hotspots, in order to decrease neg. impacts on aquatic ecosystems. A novel optimized risk assessment approach for identification of high-concern organic micropollutants in aquatic environments. This study involved multiple reactions and reactants, such as 2-(4-(1-Hydroxy-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butyl)phenyl)-2-methylpropanoic acid (cas: 83799-24-0Name: 2-(4-(1-Hydroxy-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butyl)phenyl)-2-methylpropanoic acid).

2-(4-(1-Hydroxy-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butyl)phenyl)-2-methylpropanoic acid (cas: 83799-24-0) belongs to piperidine derivatives. The piperidine moiety constitutes an important building block for the synthesis of a variety of bioactive natural products, alkaloids and other drugs. Industrially, piperidine is produced by the hydrogenation of pyridine, usually over a molybdenum disulfide catalyst. Pyridine can also be reduced to piperidine via a modified Birch reduction using sodium in ethanol.Name: 2-(4-(1-Hydroxy-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butyl)phenyl)-2-methylpropanoic acid

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Pencil graphite electrode modified with nitrogen-doped graphene and molecular imprinted polyacrylamide/sol-gel as an ultrasensitive electrochemical sensor for the determination of fexofenadine in biological media was written by Oghli, Abbas Hassan;Soleymanpour, Ahmad. And the article was included in Biochemical Engineering Journal in 2021.Recommanded Product: 83799-24-0 The following contents are mentioned in the article:

A sensitive and selective sensor was developed for the determination of fexofenadine (FEX) drug. The sensor was constructed based on the modification of a pencil graphite electrode (PGE) as a low cost, high available and versatile working electrode. The PGE was modified by nitrogen-doped graphene (NDG) and molecularly imprinted polymer (MIP) as receptor to increase the sensitivity and reducing the interference of other chems. NDG was electrochem. deposited on the electrode surface which is more homogeneous and facilitated than its conventional chem. synthesis. The mol. imprinted polymer was immobilized on the NDG layer by the sol-gel technique. In the optimum conditions, the imprinting factor was obtained equal to 4.8, indicating the optimal selectivity of the sensor for the determination of FEX. Differential pulse voltammetry (DPV) was used for the determination of FEX, which exhibited a linear calibration graph of Ip vs. FEX concentration in the range of 5.0 x 10-10-7.8 x 10-6 M (mol L-1). The detection limit of the sensor was calculated equal to 1.5 x 10-10 M, which displayed a superior detection limit when compared with the other electrochem. sensors reported for the FEX determination The developed sensor contained advantages of simple design, satisfactory reproducibility, appropriate determination recoveries and high selectivity. These features permitted the successful application of the sensor for the measurement of FEX in pharmaceutical and biol. samples. This study involved multiple reactions and reactants, such as 2-(4-(1-Hydroxy-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butyl)phenyl)-2-methylpropanoic acid (cas: 83799-24-0Recommanded Product: 83799-24-0).

2-(4-(1-Hydroxy-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butyl)phenyl)-2-methylpropanoic acid (cas: 83799-24-0) belongs to piperidine derivatives. Piperidine is a saturated organic heteromonocyclic parent, an azacycloalkane, a secondary amine and a member of piperidines. Several piperidine alkaloids isolated from natural herbs, were found to exhibit antiproliferation and antimetastatic effects on various types of cancers both in vitro and in vivo for example Piperine, Evodiamine, Matrine, Berberine and Tetrandine.Recommanded Product: 83799-24-0

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Vasodilator effect of 1-trifluoromethoxyphenyl-3-(1- propionylpiperidin-4-yl) urea is predominantly mediated through activation of voltage-dependent K+ channels was written by Shah, Shafiq Ali;Mehmood, Malik Hassan;Khan, Munasib;Bukhari, Ishfaq Ali;Gilani, Anwarul Hassan. And the article was included in Tropical Journal of Pharmaceutical Research in 2018.Recommanded Product: 1-(1-Propionylpiperidin-4-yl)-3-(4-(trifluoromethoxy)phenyl)urea The following contents are mentioned in the article:

To determine the mechanism of vasorelaxant effect of 1-trifluoromethoxyphenyl-3-(1-propionylpiperidin-4-yl) urea in cardiovascular diseases, including hypertension. Isolated rat thoracic aortic tissue preparations were mounted in an organ bath set up integrated with isometric transducer and a Power Lab assembly. TPPU was tested for vasorelaxant effect against low K⁺ (25 mM) and high K⁺ (80 mM)-induced contractions and its mechanism was determined in the presence of different antagonists (glibenclamide, 4- aminopyridine and tetra-Et ammonium). In rat aortic preparations, TPPU showed a concentration-dependent (0.3 – 100μM) and significant (p < 0.001) inhibition of low K⁺ induced contractions with complete inhibition obtained at 100μM. TPPU produced significant inhibition of high K⁺ induced contractions with maximum relaxation of 15.36 ± 1.95% and 15.85 ± 3.35% at 30 and 100μM, resp. Glibenclamide (Gb,10μM) pretreatment partially inhibited the vasorelaxant effect of TPPU against low K⁺ in a concentration range of 1 – 30μM. 4-Aminopyridine (4-AP, 1 mM) and tetra-Et ammonium markedly inhibited the vasorelexant effect of TPPU against low K⁺ induced contractions with maximum relaxation of 20.09 ± 2.40 and 21.67 ± 0.88%, resp., at 100μM. TPPU possesses marked vasorelaxant properties which provides sound pharmacol. evidence for its use as a potential drug candidate in the management of hypertension. This study involved multiple reactions and reactants, such as 1-(1-Propionylpiperidin-4-yl)-3-(4-(trifluoromethoxy)phenyl)urea (cas: 1222780-33-7Recommanded Product: 1-(1-Propionylpiperidin-4-yl)-3-(4-(trifluoromethoxy)phenyl)urea).

1-(1-Propionylpiperidin-4-yl)-3-(4-(trifluoromethoxy)phenyl)urea (cas: 1222780-33-7) belongs to piperidine derivatives. Piperidine has a role as a reagent, a protic solvent, a base, a catalyst, a plant metabolite, a human metabolite and a non-polar solvent. Piperidine prefers a chair conformation, similar to cyclohexane. Unlike cyclohexane, piperidine has two distinguishable chair conformations: one with the N–H bond in an axial position, and the other in an equatorial position.Recommanded Product: 1-(1-Propionylpiperidin-4-yl)-3-(4-(trifluoromethoxy)phenyl)urea

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Exploiting differences in caspase-2 and -3 S₂ subsites for selectivity: Structure-based design, solid-phase synthesis and in vitro activity of novel substrate-based caspase-2 inhibitors was written by Maillard, Michel C.;Brookfield, Frederick A.;Courtney, Stephen M.;Eustache, Florence M.;Gemkow, Mark J.;Handel, Rebecca K.;Johnson, Laura C.;Johnson, Peter D.;Kerry, Mark A.;Krieger, Florian;Meniconi, Mirco;Munoz-Sanjuan, Ignacio;Palfrey, Jordan J.;Park, Hyunsun;Schaertl, Sabine;Taylor, Malcolm G.;Weddell, Derek;Dominguez, Celia. And the article was included in Bioorganic & Medicinal Chemistry in 2011.Reference of 86069-86-5 The following contents are mentioned in the article:

Several caspases have been implicated in the pathogenesis of Huntington’s disease (HD); however, existing caspase inhibitors lack the selectivity required to investigate the specific involvement of individual caspases in the neuronal cell death associated with HD. In order to explore the potential role played by caspase-2, the potent but non-selective canonical Ac-VDVAD-CHO caspase-2 inhibitor 1 was rationally modified at the P₂ residue in an attempt to decrease its activity against caspase-3. With the aid of structural information on the caspase-2, and -3 active sites and mol. modeling, a 3-(S)-substituted-L-proline along with four addnl. scaffold variants were selected as P₂ elements for their predicted ability to clash sterically with a residue of the caspase-3 S₂ pocket. These elements were then incorporated by solid-phase synthesis into pentapeptide aldehydes 33a–v. Proline-based compound 33h bearing a bulky 3-(S)-substituent displayed advantageous characteristics in biochem. and cellular assays with 20- to 60-fold increased selectivity for caspase-2 and ∼200-fold decreased caspase-3 potency compared to the reference inhibitor 1. Further optimization of this prototype compound may lead to the discovery of valuable pharmacol. tools for the study of caspase-2 mediated cell death, particularly as it relates to HD. This study involved multiple reactions and reactants, such as (S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid (cas: 86069-86-5Reference of 86069-86-5).

(S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid (cas: 86069-86-5) belongs to piperidine derivatives.Piperidine is a key saturated heterocyclic scaffold found in several of the top-selling small molecule pharmaceuticals and natural alkaloids, with a diverse range of biological activities. Several piperidine alkaloids isolated from natural herbs, were found to exhibit antiproliferation and antimetastatic effects on various types of cancers both in vitro and in vivo for example Piperine, Evodiamine, Matrine, Berberine and Tetrandine.Reference of 86069-86-5

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Exploiting differences in caspase-2 and -3 S₂ subsites for selectivity: Structure-based design, solid-phase synthesis and in vitro activity of novel substrate-based caspase-2 inhibitors was written by Maillard, Michel C.;Brookfield, Frederick A.;Courtney, Stephen M.;Eustache, Florence M.;Gemkow, Mark J.;Handel, Rebecca K.;Johnson, Laura C.;Johnson, Peter D.;Kerry, Mark A.;Krieger, Florian;Meniconi, Mirco;Munoz-Sanjuan, Ignacio;Palfrey, Jordan J.;Park, Hyunsun;Schaertl, Sabine;Taylor, Malcolm G.;Weddell, Derek;Dominguez, Celia. And the article was included in Bioorganic & Medicinal Chemistry in 2011.Application In Synthesis of (S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid The following contents are mentioned in the article:

Several caspases have been implicated in the pathogenesis of Huntington’s disease (HD); however, existing caspase inhibitors lack the selectivity required to investigate the specific involvement of individual caspases in the neuronal cell death associated with HD. In order to explore the potential role played by caspase-2, the potent but non-selective canonical Ac-VDVAD-CHO caspase-2 inhibitor 1 was rationally modified at the P₂ residue in an attempt to decrease its activity against caspase-3. With the aid of structural information on the caspase-2, and -3 active sites and mol. modeling, a 3-(S)-substituted-L-proline along with four addnl. scaffold variants were selected as P₂ elements for their predicted ability to clash sterically with a residue of the caspase-3 S₂ pocket. These elements were then incorporated by solid-phase synthesis into pentapeptide aldehydes 33a–v. Proline-based compound 33h bearing a bulky 3-(S)-substituent displayed advantageous characteristics in biochem. and cellular assays with 20- to 60-fold increased selectivity for caspase-2 and ∼200-fold decreased caspase-3 potency compared to the reference inhibitor 1. Further optimization of this prototype compound may lead to the discovery of valuable pharmacol. tools for the study of caspase-2 mediated cell death, particularly as it relates to HD. This study involved multiple reactions and reactants, such as (S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid (cas: 86069-86-5Application In Synthesis of (S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid).

(S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid (cas: 86069-86-5) belongs to piperidine derivatives. The piperidine ring can be found not only in more than half of the currently known structures of alkaloids, but also in many natural or synthetic compounds with interesting biological activities. Piperidine derivatives bearing a masked aldehyde function in the ε-position are easily transformed into quinolizidine compounds through intramolecular reductive amination.Application In Synthesis of (S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

A 3D microfluidic liver model for high throughput compound toxicity screening in the OrganoPlate was written by Bircsak, Kristin M.;DeBiasio, Richard;Miedel, Mark;Alsebahi, Alaa;Reddinger, Ryan;Saleh, Anthony;Shun, Tongying;Vernetti, Lawrence A.;Gough, Albert. And the article was included in Toxicology in 2021.Quality Control of 2-(4-(1-Hydroxy-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butyl)phenyl)-2-methylpropanoic acid The following contents are mentioned in the article:

We report development, automation and validation of 3D, microfluidic liver-on-a-chip for high throughput hepatotoxicity screening, OrganoPlate LiverTox. The model is comprised of aggregates of induced pluripotent stem cell-derived hepatocytes seeded in an extracellular matrix in organ channel and co-cultured with endothelial cells and THP-1 monoblasts differentiated to macrophages seeded in vascular channel of the 96 well Mimetas OrganoPlate 2-lane. A combination of secretome measurements and image-based anal. was used to demonstrate stable 15 day cell viability, albumin and urea secretion. Over same time-period, CYP3A4 activity increased and alpha-fetoprotein secretion decreased suggesting further maturation of iHeps. Troglitazone, clin. hepatotoxin, was chosen as control compound for validation studies. Albumin, urea, hepatocyte nuclear size and viability staining provided Robust Z’factors > 0.2 in plates treated 72 h with 180μM troglitazone compared with vehicle control. The viability assay provided the most robust statistic for a Robust Z’ factor = 0.6. A small library of 159 compounds with known liver effects was added to OrganoPlate LiverTox model for 72 h at 50μM and Toxicol. Prioritization scores were calculated A follow up dose-response evaluation of select hits revealed albumin assay to be most sensitive in calculating TC50 values. This platform provides a robust, novel model which can be used for high throughput hepatotoxicity screening. This study involved multiple reactions and reactants, such as 2-(4-(1-Hydroxy-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butyl)phenyl)-2-methylpropanoic acid (cas: 83799-24-0Quality Control of 2-(4-(1-Hydroxy-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butyl)phenyl)-2-methylpropanoic acid).

2-(4-(1-Hydroxy-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butyl)phenyl)-2-methylpropanoic acid (cas: 83799-24-0) belongs to piperidine derivatives. Piperidine has a role as a reagent, a protic solvent, a base, a catalyst, a plant metabolite, a human metabolite and a non-polar solvent. Industrially, piperidine is produced by the hydrogenation of pyridine, usually over a molybdenum disulfide catalyst. Pyridine can also be reduced to piperidine via a modified Birch reduction using sodium in ethanol.Quality Control of 2-(4-(1-Hydroxy-4-(4-(hydroxydiphenylmethyl)piperidin-1-yl)butyl)phenyl)-2-methylpropanoic acid

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Radiolabelling of 1,4-disubstituted 3-[¹⁸F]fluoropiperidines and its application to new radiotracers for NR2B NMDA receptor visualization was written by Koudih, Radouane;Gilbert, Gwenaelle;Dhilly, Martine;Abbas, Ahmed;Barre, Louisa;Debruyne, Daniele;Sobrio, Franck. And the article was included in Organic & Biomolecular Chemistry in 2012.Safety of (3S,4R)-rel-tert-Butyl 3-fluoro-4-(hydroxymethyl)piperidine-1-carboxylate The following contents are mentioned in the article:

In order to develop a novel and useful building block for the development of radiotracers for positron emission tomog. (PET), we studied the radiolabelling of 1,4-disubstituted 3-[¹⁸F]fluoropiperidines. Indeed, 3-fluoropiperidine became a useful building block in medicinal chem. for the pharmacomodulation of piperidine-containing compounds The radiofluorination was studied on substituted piperidines with electron-donating and electron-withdrawing N-substituents. In the instance of electron-donating N-substituents such as benzyl or Bu, configuration retention and satisfactory fluoride-18 incorporation yields up to 80% were observed In the case of electron-withdrawing N-substituents leading to carbamate or amide functions, the incorporation yields depend on the 4-susbtitutent (2 to 63%). The radiolabelling of this building block was applied to the automated radiosynthesis of NR2B NMDA receptor antagonists and effected by a com. available radiochem. module. The in vivo evaluation of three radiotracers demonstrated minimal brain uptakes incompatible with the imaging of NR2B NMDA receptors in the living brain. Nevertheless, moderate radiometabolism was observed and, in particular, no radiodefluorination was observed which demonstrates the stability of the 3-position of the fluorine-18 atom. In conclusion, the 1,4-disubstituted 3-[¹⁸F]fluoropiperidine moiety could be of value in the development of other radiotracers for PET even if the evaluation of the NR2B NMDA receptor antagonists failed to demonstrate satisfactory properties for PET imaging of this receptor. This study involved multiple reactions and reactants, such as (3S,4R)-rel-tert-Butyl 3-fluoro-4-(hydroxymethyl)piperidine-1-carboxylate (cas: 882033-93-4Safety of (3S,4R)-rel-tert-Butyl 3-fluoro-4-(hydroxymethyl)piperidine-1-carboxylate).

(3S,4R)-rel-tert-Butyl 3-fluoro-4-(hydroxymethyl)piperidine-1-carboxylate (cas: 882033-93-4) belongs to piperidine derivatives. The piperidine moiety constitutes an important building block for the synthesis of a variety of bioactive natural products, alkaloids and other drugs. The piperidine and polyhydroxylated indolizidine derivatives have shown to be promising α-glucosidase inhibitors. The former are analogs of DNJ with an improved α-glucosidase inhibitory profile than that of DNJ. Boisson et al.Safety of (3S,4R)-rel-tert-Butyl 3-fluoro-4-(hydroxymethyl)piperidine-1-carboxylate

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Chromatographic enantiomer separation using 9-amino-9-(deoxy)-epiquinine-derived chiral selectors: control of chiral recognition via introduction of additional stereogenic centers was written by Maier, Norbert M.;Greco, Elisa;Petrovaj, Jan;Lindner, Wolfgang. And the article was included in Acta Chimica Slovenica in 2012.Application of 86069-86-5 The following contents are mentioned in the article:

Three new cinchona-type chiral selectors were prepared by attaching N-pivaloyl-glycine, N-pivaloyl-(S)-valine and N-pivaloyl-(R)-valine segments to the C9-amino function of 9-amino-9-(deoxy)-epiquinine (eAQN), and immobilized to silica to provide the corresponding chiral stationary phases (CSPs). Evaluation of the chromatog. enantioseparation characteristics of these CSPs with a broad assortment of N-carbamoyl protected amino acids under polar organic mobile phase conditions revealed modest chiral recognition capabilities for N-Fmoc-, N-Cbz- and N-Boc-derivatives The enantioselective analyte binding to these CSPs is strictly controlled by the absolute stereochem. of the amino acid functionalities attached to the C9-amino group of the eAQN framework. Specifically, the CSP derived from (S)-valine-based selector exhibits preferential binding of N-carbamoyl-(S)-amino acids, while the CSPs featuring (R)-valine- and the glycine-derived selectors show opposite enantioselective binding preference. The observed impact of analyte structure on enantioselectivity and the specific preferences in enantioselective binding point to chiral recognition mechanisms capitalizing on intermol. ion pairing, hydrogen bonding and subtle steric interactions, with the latter making the crucial contributions to stereodiscrimination. The finding that the chiral recognition characteristics of epiquinine can be readily controlled via incorporation of addnl. stereogenic centers remote from the cinchona scaffold might be useful information for the design of new enantioselective receptors and organocatalysts. This study involved multiple reactions and reactants, such as (S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid (cas: 86069-86-5Application of 86069-86-5).

(S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid (cas: 86069-86-5) belongs to piperidine derivatives. The piperidine ring can be found not only in more than half of the currently known structures of alkaloids, but also in many natural or synthetic compounds with interesting biological activities. The piperidine and polyhydroxylated indolizidine derivatives have shown to be promising α-glucosidase inhibitors. The former are analogs of DNJ with an improved α-glucosidase inhibitory profile than that of DNJ. Boisson et al.Application of 86069-86-5

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Chromatographic enantiomer separation using 9-amino-9-(deoxy)-epiquinine-derived chiral selectors: control of chiral recognition via introduction of additional stereogenic centers was written by Maier, Norbert M.;Greco, Elisa;Petrovaj, Jan;Lindner, Wolfgang. And the article was included in Acta Chimica Slovenica in 2012.Category: piperidines The following contents are mentioned in the article:

Three new cinchona-type chiral selectors were prepared by attaching N-pivaloyl-glycine, N-pivaloyl-(S)-valine and N-pivaloyl-(R)-valine segments to the C9-amino function of 9-amino-9-(deoxy)-epiquinine (eAQN), and immobilized to silica to provide the corresponding chiral stationary phases (CSPs). Evaluation of the chromatog. enantioseparation characteristics of these CSPs with a broad assortment of N-carbamoyl protected amino acids under polar organic mobile phase conditions revealed modest chiral recognition capabilities for N-Fmoc-, N-Cbz- and N-Boc-derivatives The enantioselective analyte binding to these CSPs is strictly controlled by the absolute stereochem. of the amino acid functionalities attached to the C9-amino group of the eAQN framework. Specifically, the CSP derived from (S)-valine-based selector exhibits preferential binding of N-carbamoyl-(S)-amino acids, while the CSPs featuring (R)-valine- and the glycine-derived selectors show opposite enantioselective binding preference. The observed impact of analyte structure on enantioselectivity and the specific preferences in enantioselective binding point to chiral recognition mechanisms capitalizing on intermol. ion pairing, hydrogen bonding and subtle steric interactions, with the latter making the crucial contributions to stereodiscrimination. The finding that the chiral recognition characteristics of epiquinine can be readily controlled via incorporation of addnl. stereogenic centers remote from the cinchona scaffold might be useful information for the design of new enantioselective receptors and organocatalysts. This study involved multiple reactions and reactants, such as (S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid (cas: 86069-86-5Category: piperidines).

(S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid (cas: 86069-86-5) belongs to piperidine derivatives. The piperidine structural motif is present in numerous natural alkaloids. These include piperine, which gives black pepper its spicy taste. Piperidine prefers a chair conformation, similar to cyclohexane. Unlike cyclohexane, piperidine has two distinguishable chair conformations: one with the N–H bond in an axial position, and the other in an equatorial position.Category: piperidines

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem

Synthesis and evaluation of aza-peptidyl inhibitors of the lysosomal asparaginyl endopeptidase, legumain was written by Lee, Jiyoun;Bogyo, Matthew. And the article was included in Bioorganic & Medicinal Chemistry Letters in 2012.Synthetic Route of C21H21NO4 The following contents are mentioned in the article:

Legumain or asparaginyl endopeptidase (AEP) is a lysosomal cysteine protease with a high level of specificity for cleavage of protein substrates after an asparagine residue. It is also capable of cleaving after aspartic acids sites when in the acidic environment of the lysosome. Legumain expression and activity is linked to a number of pathol. conditions including cancer, atherosclerosis and inflammation, yet its biol. role in these pathologies is not well-understood. Highly potent and selective inhibitors of legumain would not only be valuable for studying the functional roles of legumain in these conditions, but may have therapeutic potential as well. The authors describe here the design, synthesis and in vitro evaluation of selective legumain inhibitors based on the aza-asparaginyl scaffold. The authors synthesized a library of aza-peptidyl inhibitors with various non-natural amino acids and different electrophilic warheads, and characterized the kinetic properties of inactivation of legumain. The authors also synthesized fluorescently labeled inhibitors to investigate cell permeability and selectivity of the compounds The inhibitors have second order rate constants of up to 5 × 10⁴ M^-1 s^-1 and IC₅₀ values as low as 4 nM against recombinant mouse legumain. In addition, the inhibitors are highly selective toward legumain and have little or no cross-reactivity with cathepsins. Overall, the authors have identified several valuable new inhibitors of legumain that can be used to study legumain function in multiple disease models. This study involved multiple reactions and reactants, such as (S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid (cas: 86069-86-5Synthetic Route of C21H21NO4).

(S)-1-(((9H-Fluoren-9-yl)methoxy)carbonyl)piperidine-2-carboxylic acid (cas: 86069-86-5) belongs to piperidine derivatives. Piperidine is a saturated organic heteromonocyclic parent, an azacycloalkane, a secondary amine and a member of piperidines. Fluorinated piperidines are also the subject of continued interest in medicinal chemistry, for example in the synthesis of selective dipeptidyl peptidase II (DPP II) inhibitors. Piperidine derivatives are also used in solid-phase peptide synthesis (SPPS) and many degradation reactions.Synthetic Route of C21H21NO4

Referemce:
Piperidine – Wikipedia,
Piperidine | C5H11N – PubChem