Category: amides-buliding-blocks

In 2019,ChemistrySelect included an article by Porala, Subbanarasimhulu; Yerrabelly, Jayaprakash Rao; Kasireddy, Venkateshwar Reddy; Yerrabelly, Hemasri; Ghojala, Venkat Reddy; Rebelli, Pradeep. Synthetic Route of C9H19ClN2O2. The article was titled 《New and efficient synthesis of HCV NS3/4 A protease inhibitor Telaprevir》. The information in the text is summarized as follows:

An efficient and improved approach for the synthesis of HCV NS3/4 A (Hepatitis C virus Non-structural protein 3) protease inhibitor, Telaprevir has been developed, which involves the novel synthesis of key intermediates β-amino-α-hydroxy amide (I) and tripeptide acid (II). The synthesis of β-amino-α-hydroxy amide I was designed via the monochloro and dichloro intermediates using the crossed Claisen condensation followed by decarboxylation with good overall yield (29.62%). The tripeptide acid II was developed by the coupling of dipeptide acid with bicyclic nitrile followed by simple chem. conversions in less number of steps with good overall yield (61.2%). After reading the article, we found that the author used (3S)-3-Amino-N-cyclopropyl-2-hydroxyhexanamide hydrochloride(cas: 850252-34-5Synthetic Route of C9H19ClN2O2)

amides-buliding-blocks(cas:850252-34-5) is one of amino acids. Amino acids are organic compounds that contain both amino and carboxylic acid functional groups Although hundreds of amino acids exist in nature, by far the most prevalent are the alpha-amino acids, which comprise proteins.Synthetic Route of C9H19ClN2O2 Only 22 alpha amino acids appear in the genetic code.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

In 2015,Chemistry – A European Journal included an article by De, Dinesh; Neogi, Subhadip; Sanudo, E. Carolina; Bharadwaj, Parimal K.. Application In Synthesis of N-(Pyridin-4-yl)isonicotinamide. The article was titled 《Single-Crystal to Single-Crystal Linker Substitution, Linker Place Exchange, and Transmetalation Reactions in Interpenetrated Pillared-Bilayer Zinc(II) Metal-Organic Frameworks》. The information in the text is summarized as follows:

A 2-fold interpenetrated pillared-bilayer framework, {[Zn3(L)2(L2)(DMF)]·(18DMF)(6H2O)}n (1), was synthesized from the ligands tris(4′-carboxybiphenyl)amine (H3L) and 1,2-bis(4-pyridyl)ethylene (L2). The structure contains [Zn3(COO)6] secondary building units (SBUs), in which three ZnII ions are almost linear with carboxylate bridging. This framework undergoes reversible pillar linker substitution reactions at the terminal ZnII centers with three different dipyridyl linkers of different lengths to afford three daughter frameworks, 2-4. Frameworks 2-4 are interconvertible through reversible linker substitution reactions. Also, competitive linker-exchange experiments show preferential incorporation of linker L3 in the parent framework 1. The larger linker L5 does not undergo such substitution reactions and framework 5, which contains this linker, can be synthesized solvothermally as a 2-fold interpenetrated structure. When framework 5 is dipped in a solution of L3 in DMF, linker substitution takes place as before, but linker L5 now moves and diagonally binds two ZnII centers to afford 6 as a nonpenetrated single framework. This linker place exchange reaction is unprecedented. All of these reactions take place in a single-crystal to single-crystal (SC-SC) manner, and were observed directly through x-ray crystallog. Each 3D framework undergoes complete copper(II) transmetalation. After reading the article, we found that the author used N-(Pyridin-4-yl)isonicotinamide(cas: 64479-78-3Application In Synthesis of N-(Pyridin-4-yl)isonicotinamide)

N-(Pyridin-4-yl)isonicotinamide(cas: 64479-78-3) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole.Application In Synthesis of N-(Pyridin-4-yl)isonicotinamide The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors. In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Hauser, Melanie R.; Zhakarov, Lev; Doxsee, Kenneth M.; Li, Tonglei published their research in Crystal Growth & Design on December 31 ,2008. The article was titled 《Polymorphism of a Simple Organic Amide》.Category: amides-buliding-blocks The article contains the following contents:

Glycolanilide (2-hydroxy-N-phenylacetamide), a simple amide, may be reproducibly crystallized in either of two polymorphic forms. The crystal and mol. structures of each polymorph have been determined, revealing that the two polymorphs differ in the extent and arrangement of intermol. hydrogen bonding. The more stable polymorph displays one-dimensional chains linked through hydrogen bonds between the amide carbonyl and the α-hydroxyl group. In the metastable polymorph, analogous chain structures are overlain with cyclic hydrogen-bonded amide dimers, with an addnl. set of hydrogen bonding contacts joining the chain and cyclic motifs. The experimental process involved the reaction of 2-Hydroxy-N-phenylacetamide(cas: 4746-61-6Category: amides-buliding-blocks)

2-Hydroxy-N-phenylacetamide(cas: 4746-61-6) belongs to amides. The solubilities of amides and esters are roughly comparable. Typically amides are less soluble than comparable amines and carboxylic acids since these compounds can both donate and accept hydrogen bonds.Category: amides-buliding-blocks

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Recommanded Product: 87694-50-6On May 6, 1998 ,《γ-Peptides forming more stable secondary structures than α-peptides. Synthesis and helical NMR-solution structure of the γ-hexapeptide analog of H-(Val-Ala-Leu)2-OH》 appeared in Helvetica Chimica Acta. The author of the article were Hintermann, Tobias; Gademann, Karl; Jaun, Bernhard; Seebach, Dieter. The article conveys some information:

For a comparison with the corresponding α- and β-hexapeptides H-(Val-Ala-Leu)2-OH (A) and H-(β-HVal-β-HAla-β-HLeu)2-OH (B), the corresponding γ-hexapeptide (I), built from the homochirally similar (S)-4-aminobutanoate, (R)-4-amino-5-methylhexanoate, and (R)-4-amino-6-methylheptanoate, was prepared The precursors were obtained either by double Arndt-Eistert homologation of protected Boc-Val-OH, Boc-Ala-OH, and Boc-Leu-OH, or by the superior route involving olefination/hydrogenation of the corresponding aldehydes, Boc-valinal, Boc-alaninal, and Boc-leucinal. Conventional peptide coupling (EDC/HOBt) furnished I through the intermediate γ-di- and γ-tripeptide. NMR measurements in (D5)pyridine and CD3OH solution (COSY, TOCSY, HSQC, HMBC, ROESY) reveal that I adopts a right-handed helical structure [(P)-2.61 helix of ∼5-Å pitch, containing 14-membered H-bonded rings] which is to be compared with the left-handed helix of β-peptide B [(M)-31 helix of 5-Å pitch, 14-membered H-bonded rings] and with the familiar right-handed, so-called α-helix of α-peptides [(P)-3.61 helix of 5.4-Å pitch, 13-membered rings]. Like the helix sense, the helix dipole reverses when going from α-(N→C) to β-(C→N) to γ-peptides (N→C). The surprising difference between the natural α-, and the analogous β- and γ-peptides is that the helix stability increases upon homologation of the residues. In the part of experimental materials, we found many familiar compounds, such as (S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6Recommanded Product: 87694-50-6)

(S)-N-Methyl-N-methoxy-2-(tert-butoxycarbonylamino)-4-methylpentanamide(cas: 87694-50-6) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole. The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors.Recommanded Product: 87694-50-6 In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Recommanded Product: 64479-78-3On May 1, 2016 ,《Unsubstituted and substituted copper malonate coordination polymers with isomeric dipyridylamide ligands: Chain, layer, diamondoid, and self-penetrated topologies》 appeared in Inorganica Chimica Acta. The author of the article were Stone, Brandon S.; Staples, Richard J.; LaDuca, Robert L.. The article conveys some information:

Six dual-ligand divalent Cu malonate coordination polymers were prepared via solvent diffusion methods, and structurally characterized by single-crystal x-ray diffraction. The resulting dimensionality and topol. depend crucially on the steric bulk of the malonate ligand and the N donor disposition within the dipyridylamide coligand. {[Cu(mal)(3-pina)(H2O)]·2H2O}n (1, mal = malonate, 3-pina = 3-pyridylisonicotinamide) possesses a simple 1-dimensional chain structure, while the isomeric 4-pyridylnicotinamide (4-pna) ligand afforded a 2-fold interpenetrated (6,3) grid layer structure in {[Cu(mal)(4-pna)(H2O)]·3H2O}n (2). Employing Cu dimethylmalonate (dmmal) in the synthetic regime permitted synthesis of the (4,4) grid layered phase {[Cu2(dmmal)2(4-pna)2(H2O)3]·7H2O}n (3) and {[Cu2(dmmal)2(3-pina)2]·9.5H2O}n (4), which exhibited a 3-fold interpenetrated diamondoid net with large H2O-filled incipient channels, built from [Cu4(dmmal)4] tetranuclear clusters. {[Cu2(Hdmmal)2(dmmal)(4-pina)2]·0.5H2O}n (5, 4-pina = 4-pyridylisonicotinamide) manifested a unique 5-connected self-penetrated 3-dimensional network with 42678 topol. {[Cu(emal)(4-pna)(H2O)]·3H2O}n (6, emal = ethylmalonate) is another simple 1-dimensional chain phase. Ferromagnetic coupling (J = 11(3) cm-1) was observed within the tetranuclear clusters in 4. Thermal properties of these materials are also presented. In the experiment, the researchers used N-(Pyridin-4-yl)isonicotinamide(cas: 64479-78-3Recommanded Product: 64479-78-3)

N-(Pyridin-4-yl)isonicotinamide(cas: 64479-78-3) belongs to amides.Recommanded Product: 64479-78-3Amides are pervasive in nature and technology. Proteins and important plastics like Nylons, Aramid, Twaron, and Kevlar are polymers whose units are connected by amide groups (polyamides); these linkages are easily formed, confer structural rigidity, and resist hydrolysis.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Safety of H-Lys(Boc)-OHOn June 1, 2020, Vangala, Venugopal; Nimmu, Narendra Varma; Khalid, Sara; Kuncha, Madhusudana; Sistla, Ramakrishna; Banerjee, Rajkumar; Chaudhuri, Arabinda published an article in Molecular Pharmaceutics. The article was 《Combating Glioblastoma by Codelivering the Small-Molecule Inhibitor of STAT3 and STAT3siRNA with α5β1 Integrin Receptor-Selective Liposomes》. The article mentions the following:

Glioblastoma multiforme (GBM) is one of the most aggressive tumors with a median survival of only 15 mo. Effective therapeutics need to overcome the formidable challenge of crossing the blood-brain barrier (BBB). Receptors and transporters overexpressed on BCECs are being used for designing liposomes, polymers, polymeric micelles, peptides, and dendrimer-based drug carriers for combating brain tumors. Herein, using the orthotopic mouse glioblastoma model, we show that codelivering a small-mol. inhibitor of the JAK/STAT pathway (WP1066) and STAT3siRNA with nanometric (100-150 nm) α5β1 integrin receptor-selective liposomes of RGDK-lipopeptide holds therapeutic promise in combating glioblastoma. Rh-PE (red)-labeled liposomes of RGDK-lipopeptide were found to be internalized in GL261 cells via integrin α5β1 receptors. I.v. administered near-IR (NIR)-dye-labeled α5β1 integrin receptor-selective liposomes of RGDK-lipopeptide were found to be accumulated preferentially in the mouse brain tumor tissue. Importantly, we show that iv injection of WP1066 (a com. sold small-mol. inhibitor of the JAK/STAT pathway) and STAT3siRNA cosolubilized within the liposomes of RGDK-lipopeptide leads to significant inhibition (>350% compared to the untreated mice group) of orthotopically growing mouse glioblastoma. The present strategy may find future use in combating GBM. After reading the article, we found that the author used H-Lys(Boc)-OH(cas: 2418-95-3Safety of H-Lys(Boc)-OH)

H-Lys(Boc)-OH(cas: 2418-95-3) belongs to amino acids. Amino acids are not generally considered to be electrochemically active because products of the oxidation accumulate on the electrode surface and prevent it from participating in any further electrochemical processes.Safety of H-Lys(Boc)-OH

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

《How Robust Is the N-H···Cl2-Cu Synthon? Crystal Structures of Some Perchlorocuprates》 was written by Kumar, D. Krishna; Ballabh, Amar; Jose, D. Amilan; Dastidar, Parthasarathi; Das, Amitava. Computed Properties of C11H9N3O And the article was included in Crystal Growth & Design on April 30 ,2005. The article conveys some information:

Perchlorocuprate salts, namely, [4,4′-H2diazastilbene][CuCl4] 1, [H2-N-(4-pyridyl)isonicotinamide][CuCl4] 2, [H2-N-(3-pyridyl)isonicotinamide][CuCl4] 3, [H2-N-(4-pyridyl)nicotinamide][CuCl4] 4, [H2-N,N’-bis(4-pyridyl)urea][CuCl4] 5, [H-isonicotinic acid]2[CuCl4].2H2O 6, [2-aminopyridinium]2[CuCl4] 7, and [3-aminopyridinium]2[CuCl4] 8 were synthesized and analyzed by single-crystal x-ray diffraction. N-H···Cl-Cu H-bonding interaction is important in supramol. syntheses of these solids. However, occurrence of bifurcated H bonding N-H···Cl2Cu (synthon A) appears to be dependent on the topol. of the cations, geometry of the anions, and other weak interactions such as C-H···Cl-Cu. Salts of isomeric cations such as 2, 3 and 4, and 7 and 8 are crystallog. isostructural in their resp. groups despite having different H-bonding site topologies. The H-bonding-capable backbones (amide and urea moieties) in 2, 3, 4, and 5 do not display the typical H-bonding network involving these moieties. In the experiment, the researchers used N-(Pyridin-4-yl)isonicotinamide(cas: 64479-78-3Computed Properties of C11H9N3O)

N-(Pyridin-4-yl)isonicotinamide(cas: 64479-78-3) belongs to amides. Because of the greater electronegativity of oxygen, the carbonyl (C=O) is a stronger dipole than the N–C dipole. The presence of a C=O dipole and, to a lesser extent a N–C dipole, allows amides to act as H-bond acceptors.Computed Properties of C11H9N3O In primary and secondary amides, the presence of N–H dipoles allows amides to function as H-bond donors as well.

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

《Fe-BPsalan Complex-Catalyzed Asymmetric [4 + 2] Cycloaddition of Cyclopentadiene with α,β-Unsaturated Heterocycles》 was written by Chen, Kai-Ge; Lu, Hao; Zhou, Yi-Ming; Wan, Xiao-Long; Wang, Hao-Yang; Xu, Zhen-Jiang; Guo, Hai-Ming; Che, Chi-Ming. Category: amides-buliding-blocksThis research focused onunsaturated acyl imidazole cyclopentadiene iron catalyst enantioselective cycloaddition reaction; imidazolyl bicycloheptenyl methanone preparation; cinnamoylisoindolinedione cyclopentadiene iron catalyst enantioselective cycloaddition reaction; bicycloheptene carbonyl isoindolinedione preparation. The article conveys some information:

An efficient iron-catalyzed asym. [4 + 2] cycloaddition of cyclopentadiene with α,β-unsaturated acyl imidazoles or 2-cinnamoylisoindoline-1,3-dione derivatives was developed to afford the addition products in high yield and selectivity. Interestingly, the absolute structures of the addition products were controlled by the auxiliaries via different coordination modes with the same type of catalyst. In the part of experimental materials, we found many familiar compounds, such as N-Methoxy-N-methylacetamide(cas: 78191-00-1Category: amides-buliding-blocks)

N-Methoxy-N-methylacetamide(cas: 78191-00-1) belongs to anime. Milder oxidation, using reagents such as NaOCl, can remove four hydrogen atoms from primary amines of the type RCH2NH2 to form nitriles (R―C≡N), and oxidation with reagents such as MnO2 can remove two hydrogen atoms from secondary amines (R2CH―NHR′) to form imines (R2C=NR′). Tertiary amines can be oxidized to enamines (R2C=CHNR2) by a variety of reagents.Category: amides-buliding-blocks

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

Application of 70-55-3In 2019 ,《Multicomponent Aromatic and Benzylic Mannich Reactions through C-H Bond Activation》 was published in Chemistry – A European Journal. The article was written by Xavier, Tania; Rayapin, Corinne; Le Gall, Erwan; Presset, Marc. The article contains the following contents:

The straightforward generation of densely substituted-amines I [R = H, Me; R1 = Me, 4-MeC6H4, 2-thienyl; R2 = Ph, 4-MeC6H4, 2-thienyl, etc.; R3 = H, 3-Me, 4-OMe, etc.] was described via multicomponent Mannich reaction of sulfonamides, acetals and arylpyridines through C-H bond activation in good yields. The reaction involved a reaction between two transient species: an organometallic species, generated by transition-metal-catalyzed sp2 or sp3 C-H bond activation and an in situ generated imine. The use of an acetal as an aldehyde surrogate was found essential for the reaction to proceed. The process could be successfully applied to RhIII-catalyzed sp2 C-H bond functionalization and extended to CuII-catalyzed sp3 C-H bond functionalization. In the part of experimental materials, we found many familiar compounds, such as 4-Methylbenzenesulfonamide(cas: 70-55-3Application of 70-55-3)

4-Methylbenzenesulfonamide(cas: 70-55-3) belongs to anime. Left-handed and right-handed forms (mirror-image configurations, known as optical isomers or enantiomers) are possible when all the substituents on the central nitrogen atom are different (i.e., the nitrogen is chiral). With amines, there is extremely rapid inversion in which the two configurations are interconverted.Application of 70-55-3

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics

In 2022,Liu, Guodong; Hou, Ruilin; Xu, Lijuan; Zhang, Xinqi; Yan, Jianyu; Xing, Chengguo; Xu, Ke; Zhuang, Chunlin published an article in Journal of Medicinal Chemistry. The title of the article was 《Crystallography-Guided Optimizations of the Keap1-Nrf2 Inhibitors on the Solvent Exposed Region: From Symmetric to Asymmetric Naphthalenesulfonamides》.Safety of 2-Bromoacetamide The author mentioned the following in the article:

Directly inhibiting the Keap1-Nrf2 protein-protein interaction has been investigated as a promising strategy to activate Nrf2 for anti-inflammation. We previously reported a naphthalensulfonamide Keap1-Nrf2 inhibitor NXPZ-2, but have not determined the exact binding mode with Keap1. This sym. naphthalenesulfonamide compound has relatively low solubility Herein, we first determined a crystal complex (resolution: 2.3 Å) of human Keap1 Kelch domain with NXPZ-2. Further optimizations on the solvent exposed region obtained asym. naphthalenesulfonamides and three crystal structures of Keap1 in complex with designed compounds Among them, the asym. piperazinyl-naphthalenesulfonamide 6k with better aqueous solubility showed the best KD2 value of 0.21μM to block the interaction. The productions of ROS and NO and the expression of TNF-α were inhibited by 6k in the in vitro model. This compound could relieve inflammations by significantly increasing the Nrf2 nuclear translocation in the LPS-induced ALI model with promising pharmacokinetic properties. In the experiment, the researchers used many compounds, for example, 2-Bromoacetamide(cas: 683-57-8Safety of 2-Bromoacetamide)

2-Bromoacetamide(cas: 683-57-8) can be used in preparation of (2-carbamoylmethoxy-5-chloro-benzyl)-carbamic acid tert-butyl ester. It was aslo used as precursor to dehydropeptidase I inactivator.Safety of 2-Bromoacetamide

Referemce:
Amide – Wikipedia,
Amide – an overview | ScienceDirect Topics