Category: esters-buliding-blocks

Lamotte, Yann; Faucher, Nicolas; Sancon, Julien; Pineau, Olivier; Sautet, Stephane; Fouchet, Marie-Helene; Beneton, Veronique; Tousaint, Jean-Jacques; Saintillan, Yannick; Ancellin, Nicolas; Nicodeme, Edwige; Grillot, Didier; Martres, Paul published an article on February 15 ,2014. The article was titled 《Discovery of novel indazole derivatives as dual angiotensin II antagonists and partial PPARγ agonists》, and you may find the article in Bioorganic & Medicinal Chemistry Letters.Name: Methyl 4′-formyl-[1,1′-biphenyl]-2-carboxylate The information in the text is summarized as follows:

Identification of indazole derivatives acting as dual angiotensin II type 1 (AT1) receptor antagonists and partial peroxisome proliferator-activated receptor-γ (PPARγ) agonists is described. Starting from telmisartan, the authors previously described that indole derivatives were very potent partial PPARγ agonists with loss of AT1 receptor antagonist activity. Design, synthesis and evaluation of new central scaffolds led us to the discovery of pyrrazolopyridine then indazole derivatives provided novel series possessing the desired dual activity. Among the new compounds, I was identified as a potent AT1 receptor antagonist (IC50 = 0.006 μM) and partial PPARγ agonist (EC50 = 0.25 μM, 40% max) with good oral bioavailability in rat. The dual pharmacol. of compound I was demonstrated in two preclin. models of hypertension (SHR) and insulin resistance (Zucker fa/fa rat).Methyl 4′-formyl-[1,1′-biphenyl]-2-carboxylate(cas: 144291-47-4Name: Methyl 4′-formyl-[1,1′-biphenyl]-2-carboxylate) was used in this study.

Methyl 4′-formyl-[1,1′-biphenyl]-2-carboxylate(cas: 144291-47-4) belongs to esters. Esters are more polar than ethers but less polar than alcohols. They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols. Name: Methyl 4′-formyl-[1,1′-biphenyl]-2-carboxylate

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

In 1957,Journal of the American Chemical Society included an article by Henry, David W.; Leete, Edward. Formula: C8H9NO4. The article was titled 《Amine oxides. I. Gramine oxide》. The information in the text is summarized as follows:

Gramine (I) (17.4 g.) in 40 cc. EtOH treated with 28.2 cc. 30% aqueous H2O2 and cooled gave 18.5 g. N-oxide (II) of I containing 1 mole H2O2 of crystallization, m. 135-6° (decomposition) (rapid heating), 121-2° (decomposition) (slow heating); recrystallization of II.H2O2 from EtOH did not remove the H2O2. If the excess H2O2 in a similar oxidation run was decomposed with a small amount of 10% Pt-C no crystallization occurred, but the addition of H2O2 to the solution precipitated II.H2O2. Samples of II.H2O2 were pale brown after several months and contained a slightly lower percentage of H2O2. I.MeI (1.0 g.) added to 80 mg. Na in 3.3 g. Me2NOH at room temperature and evaporated after 19 hrs. in vacuo, and the semisolid residue extracted with 20 cc. H2O left 0.24 g. I; the aqueous filtrate was shown to contain II by paper chromatography. Rf values for II, I, and I.MeI: 0.78, 0.72, 0.56 (15% aqueous NH4OH); 0.79, 0.76, 0.61 (6:5 Me2CO-7.5% NH4OH); 0.89, 1.0, 1.0 (1.3:1 PrOH-H2O). All reactions with II in this investigation were performed with the product obtained by the decomposition of II.H2O with 10% Pt-C; all weights of II refer to the II.H2O2. II (0.1 g.) in 20 cc. H2O treated with 5 g. Zn dust and 10 cc. glacial AcOH, stirred 0.5 hr., and filtered, the filtrate added to aqueous KOH, and the precipitate isolated with Et2O yielded 0.72 g. I, m. 133°. II (1.0 g.) in 20 cc. MeOH evaporated at 10° in vacuo, the pale brown residual sirup heated 10 min. at 125°, the tarry residue extracted with Et2O, the extract concentrated to 10 cc., diluted with 20 cc. pentane, and chromatographed on Al2O3 yielded 0.15 g. O-skatyl-N,N-dimethylhydroxylamine (III), m. 93-4° (pentane). II refluxed with a variety of solvents 1 hr. and evaporated in vacuo, and the residue chromatographed on Al2O3 gave III (solvent and % yield given): PhMe 16, HCONMe2 25, dioxane 37, MeCN containing a trace pyridine 61. III (42 mg.) added to 42 mg. LiAlH4 in 20 cc. Et2O, refluxed 1 hr., treated with wet Et2O, filtered, and evaporated, and the residue dissolved in MeOH and treated with 1,3,5-C6H3(NO2)3 (IV) gave the IV-skatole adduct, orange needles, m. 184-5°. II (2.0 g.) refluxed 3 hrs. with 40 cc. piperidine and evaporated in vacuo gave 1.59 g. 3-piperidinomethylindole (V), m. 158-9° (EtOH). Aqueous II and piperidine warmed at 100° gave V. Aqueous I.MeI treated with piperidine at room temperature gave immediately a precipitate of the piperidino derivative II refluxed with Et2NH yielded 3-diethylaminomethylindole, m. 102.5-104°. II refluxed in Me2NH gave I. II and morpholine gave at 100° 3-morpholinomethylindole, m. 119-21°. PhNHMe and II gave at 100° 3-(N-methyl-N-phenylaminomethyl)indole, m. 85-6.5°, in 58% yield. II (1.6 g.) in 20 cc. MeOH added to 0.17 g. Na in 20 cc. MeOH, refluxed 1 min., cooled to room temperature, treated with 0.65 g. NaHCO3 and 0.2 cc. H2O, and evaporated in vacuo, the vapors condensed in a Dry Ice trap, and the condensate treated with picric acid gave the picrate of Me2NOH, yellow needles, m. 160-1° (EtOH); the residue extracted with Et2O, and the extract dried, and evaporated gave 0.72 g. 3-methoxymethylindole (VI), m. 97-8° (pentane). II and NaOEt yielded 59% 3-ethoxymethylindole (VII),. m. 62-3°. II (1.0 g.) refluxed 2 hrs. with 25 cc. iso-BuOH and evaporated and the residue chromatographed on Al2O3 with 1:3 Et2O-pentane to pure Et2O yielded 3-(isobutoxymethyl)indole, b0.0005 120°, n25D 1.5574, which was also obtained in 44% yield from I with EtI and iso-BuONa; later elution of the column and sublimation of the resulting semisolid at 80°/0.0002 mm. gave III, m. 92-3°. III, VII, and Et2O-insoluble, apparently polymeric material, was obtained by refluxing II and EtOH. II (1.0 g.) in 50 cc. H2O added dropwise with stirring to refluxing 50 cc. 10% aqueous NaOH and 50 cc. Et2O, and the Et2O layer worked up after 4 hrs. refluxing gave 0.11 g. 3-hydroxymethylindole, m. 99-100° (pentane). II (1.0 g.) in 20 cc. H2O heated 20 hrs. at 100° and extracted with Et2O and the extract chromatographed on Al2O3 yielded 0.10 g. 3,3′-diindolylmethane, m. 163-4°, and much Et2O-insoluble polymeric material. The aqueous solution of a duplicate run treated at the end of the reaction with dimedon gave the CH2O derivative, m. 190-1°. II (1.0 g.) in 25 cc. H2O stirred 1.5 hrs. at 100° with 25 cc. PhMe, 10 g. NaCN, and 25 cc. saturated aqueous NaCN and the PhMe layer dried with K2CO3 and worked up gave a liquid residue which with IV in MeOH gave 1.36 g. IV adduct of 3-cyanomethylindole (VIII), orange needles, m. 135.5-37°. II treated with NaCN in MeOH gave a mixture of VIII and VI. II (1.0 g.) in 15 cc. MeNO2 treated with 0.10 g. Na in 2 cc. EtOH, refluxed 1 hr. with stirring, treated with 0.2 H2O, and evaporated in vacuo, and the residue extracted with Et2O, diluted with pentane, and chromatographed on Al2O3 yielded 0.27 g. 3-(2-nitroethyl)indole, m. 53.5-54°. II (1.0 g.) in 15 cc. H2O heated 2 hrs. at 100° with 1 cc. 4N HCl gave a white amorphous polymer which was also obtained from 3-hydroxymethylindole and acids; the aqueous filtrate evaporated, and the residual sirup treated with picric acid gave the picrate of IV, m. 160-1°. II treated with alc. picric acid gave only resinous material. In addition to this study using Dimethyl 1H-pyrrole-2,3-dicarboxylate, there are many other studies that have used Dimethyl 1H-pyrrole-2,3-dicarboxylate(cas: 2818-08-8Formula: C8H9NO4) was used in this study.

Dimethyl 1H-pyrrole-2,3-dicarboxylate(cas: 2818-08-8) belongs to pyrroles. Pyrroles are components of more complex macrocycles, including the porphyrinogens and products derived therefrom, including porphyrins of heme, the chlorins, bacteriochlorins, and chlorophylls. Porphobilinogen, a trisubstituted pyrrole, is the biosynthetic precursor to many natural products such as heme.Formula: C8H9NO4

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

COA of Formula: C6H10O3On September 22, 2021 ,《Enantioselective Synthesis of Nitrogen-Nitrogen Biaryl Atropisomers via Copper-Catalyzed Friedel-Crafts Alkylation Reaction》 was published in Journal of the American Chemical Society. The article was written by Wang, Xiao-Mei; Zhang, Peng; Xu, Qi; Guo, Chang-Qiu; Zhang, De-Bing; Lu, Chuan-Jun; Liu, Ren-Rong. The article contains the following contents:

Nitrogen-nitrogen bonds containing motifs are ubiquitous in natural products and bioactive compounds However, the atropisomerism arising from a restricted rotation around an N-N bond is largely overlooked. Here, a method to access the first enantioselective synthesis of N-N biaryl atropisomers via a Cu-bisoxazoline-catalyzed Friedel-Crafts alkylation reaction is described. A wide range of axially chiral N-N bisazaheterocycle compounds were efficiently prepared in high yields with excellent enantioselectivities via desymmetrization and kinetic resolution Heating experiments showed that the axially chiral bisazaheterocycle products have high rotational barriers. The experimental process involved the reaction of Methyl 3-oxovalerate(cas: 30414-53-0COA of Formula: C6H10O3)

Methyl 3-oxovalerate(cas: 30414-53-0) belongs to ketone compounds. Ketone compounds have important physiological properties. They are found in several sugars and in compounds for medicinal use, including natural and synthetic steroid hormones. Molecules of the anti-inflammatory agent cortisone contain three ketone groups.COA of Formula: C6H10O3

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

Name: 3-(Methoxycarbonyl)benzoic acidOn September 1, 2019 ,《Design and synthesis of 3-aminophthalazine derivatives and structural analogues as PDE5 inhibitors: anti-allodynic effect against neuropathic pain in a mouse model》 was published in European Journal of Medicinal Chemistry. The article was written by Bollenbach, Maud; Lugnier, Claire; Kremer, Melanie; Salvat, Eric; Megat, Salim; Bihel, Frederic; Bourguignon, Jean-Jacques; Barrot, Michel; Schmitt, Martine. The article contains the following contents:

Herein, a series of aminophthalazine I [R = H, Ph, 1-piperidyl, etc.; R1 = H, CF3; R2 = 3-ClC6H4NH, 4-MeOC6H4CH2NH, Ph(CH2)2NH, etc.] and aminoindazole derivatives II [R3 = H, Cl, CF3; R4 = H, Me, Ph, etc.; R5 = 3-ClC6H4, 4-MeOC6H4CH2, 3-F-4-MeOC6H3CH2, etc.] were synthesized and evaluated for their inhibitory activity toward PDE5. Selectivity profiles towards other PDE1-4 isoenzymes, water solubility and stability in acidic medium of the most potent PDE5 inhibitors were determined and the aminophthalazine I [R = Ph, R1 = CF3, R2 = 4-OMeC6H4CH2NH] and its mimetic compound II [R3 = CF3, R4 = 3-pyridyl, R5 = 4-OMeC6H4CH2NH] were evaluated in comparison to MY 5445 in vivo in a model of neuropathic pain induced by sciatic nerve cuffing in mice (3 and 0.5 mg/kg, i.p. twice a day). Both compounds showed the same efficacy on neuropathic allodynia as MY 5445 and thus produced a significant relief of mech. hypersensitivity after 12 days of treatment. In the experimental materials used by the author, we found 3-(Methoxycarbonyl)benzoic acid(cas: 1877-71-0Name: 3-(Methoxycarbonyl)benzoic acid)

3-(Methoxycarbonyl)benzoic acid(cas: 1877-71-0) belongs to esters. Esters are more polar than ethers but less polar than alcohols. Name: 3-(Methoxycarbonyl)benzoic acid They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols.

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

Recommanded Product: Methyl 4′-formyl-[1,1′-biphenyl]-2-carboxylateOn October 22, 2020 ,《First Structure-Activity Relationship Study of Potent BLT2 Agonists as Potential Wound-Healing Promoters》 was published in Journal of Medicinal Chemistry. The article was written by Hernandez-Olmos, Victor; Heering, Jan; Planz, Viktoria; Liu, Ting; Kaps, Alexander; Rajkumar, Rinusha; Gramzow, Matthias; Kaiser, Astrid; Schubert-Zsilavecz, Manfred; Parnham, Michael J.; Windbergs, Maike; Steinhilber, Dieter; Proschak, Ewgenij. The article contains the following contents:

The first potent leukotriene B4 (LTB4) receptor type 2 (BLT2) agonists, endogenous 12(S)-hydroxyheptadeca-5Z,8E,10E-trienoic acid (12-HHT), and synthetic CAY10583 (CAY) have been recently described to accelerate wound healing by enhanced keratinocyte migration and indirect stimulation of fibroblast activity in diabetic rats. CAY represents a very valuable starting point for the development of novel wound-healing promoters. In this work, the first structure-activity relationship study for CAY scaffold-based BLT2 agonists is presented. The newly prepared derivatives showed promising in vitro wound-healing activity. In the experimental materials used by the author, we found Methyl 4′-formyl-[1,1′-biphenyl]-2-carboxylate(cas: 144291-47-4Recommanded Product: Methyl 4′-formyl-[1,1′-biphenyl]-2-carboxylate)

Methyl 4′-formyl-[1,1′-biphenyl]-2-carboxylate(cas: 144291-47-4) belongs to esters. Esters are more polar than ethers but less polar than alcohols. Recommanded Product: Methyl 4′-formyl-[1,1′-biphenyl]-2-carboxylate They participate in hydrogen bonds as hydrogen-bond acceptors, but cannot act as hydrogen-bond donors, unlike their parent alcohols.

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

《A Multifunctional Reagent Designed for the Site-Selective Amination of Pyridines》 was published in Journal of the American Chemical Society in 2020. These research results belong to Fier, Patrick S.; Kim, Suhong; Cohen, Ryan D.. Application of 36016-38-3 The article mentions the following:

The development of a multifunctional reagent for the direct conversion of pyridines to Boc-protected 2-aminopyridines such as I [R = H, 3-Br, 4-Ph, etc.] with exquisite site selectivity and chemoselectivity was reported. The novel reagent was prepared on 200g scale in a single step, reacted in title reaction under mild conditions without precautions toward air or moisture, and is tolerant of nearly all common functionality. Exptl. and in situ spectroscopic monitoring techniques provided detailed insights and unexpected findings for the unique reaction mechanism.N-tert-Butoxycarbonylhydroxylamine(cas: 36016-38-3Application of 36016-38-3) was used in this study.

N-tert-Butoxycarbonylhydroxylamine(cas: 36016-38-3) belongs to anime. Aniline, ethanolamines, and several other amines are major industrial commodities used in making rubber, dyes, pharmaceuticals, and synthetic resins and fibres and for a host of other applications. Most of the numerous methods for the preparation of amines may be broadly divided into two groups: (1) chemical reduction (replacement of oxygen with hydrogen atoms in the molecule) of members of several other classes of organic nitrogen compounds and (2) reactions of ammonia or amines with organic compounds.Application of 36016-38-3

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

《Hydrophobic Pockets of HPMC Enable Extremely Short Reaction Times in Water》 was published in ACS Sustainable Chemistry & Engineering in 2020. These research results belong to Petkova, Desislava; Borlinghaus, Niginia; Sharma, Sudripet; Kaschel, Johannes; Lindner, Tanja; Klee, Johanna; Jolit, Anais; Haller, Vanessa; Heitz, Stephanie; Britze, Katarina; Dietrich, Justin; Braje, Wilfried M.; Handa, Sachin. Application of 4248-19-5 The article mentions the following:

A methodol. for formation of ligated ultrasmall in-situ generated Pd nanoparticles in the hydrophobic pockets of benign cellulose derivative hydroxypropyl methylcellulose (HPMC) for chem. reactions to proceed very fast in water under mild reaction conditions was reported. Unprecedented short reaction times were exemplified for the Buchwald-Hartwig amination reaction of aryl bromides and aryl amines using in-situ generated Pd nanoparticles in aqueous HMPC solution to afford substituted aryl amines RNHR1 [R = 1-naphthyl, 3-MeC6H4, 2-MeOC6H4, etc.; R1 = Ph, 4-MeC6H4, 1-naphthyl, etc.]. In addition, very short reaction times were also demonstrated for the peptide coupling of carboxylic acids and amines using in-situ generated Pd nanoparticles in aqueous HMPC solution to afford aryl amides R2C(O)NR3R4 [R2 = Bn, 4-ClC6H4, 4-BrC6H4, etc.; R3 = OMe, n-hexyl, 3,5-(Me)2C6H3, etc.; R4 = H, Me, etc.]. After reading the article, we found that the author used tert-Butyl carbamate(cas: 4248-19-5Application of 4248-19-5)

tert-Butyl carbamate(cas: 4248-19-5) belongs to anime. Reduction of nitro compounds, RNO2, by hydrogen or other reducing agents produces primary amines cleanly (i.e., without a mixture of products), but the method is mostly used for aromatic amines because of the limited availability of aliphatic nitro compounds. Reduction of nitriles and oximes (R2C=NOH) also yields primary amines.Application of 4248-19-5

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

The author of 《Palladium-Catalyzed Amidation and Amination of (Hetero)aryl Chlorides under Homogeneous Conditions Enabled by a Soluble DBU/NaTFA Dual-Base System》 were Beutner, Gregory L.; Coombs, John R.; Green, Rebecca A.; Inankur, Bahar; Lin, Dong; Qiu, Jun; Roberts, Frederick; Simmons, Eric M.; Wisniewski, Steven R.. And the article was published in Organic Process Research & Development in 2019. Formula: C5H11NO2 The author mentioned the following in the article:

The palladium-catalyzed coupling of aryl and heteroaryl chlorides with primary amides under mild homogeneous reaction conditions is reported. Successful C-N coupling is enabled using a unique “”dual-base”” system consisting of DBU and NaTFA, which serve as proton acceptor and halide scavenger, resp., using low catalyst loadings (0.5 mol %) with readily available, air-stable palladium precatalysts. The DBU/NaTFA system also enables the room-temperature coupling of primary aryl amines with aryl chlorides and is tolerant of a variety of base-sensitive functional groups. In the experimental materials used by the author, we found tert-Butyl carbamate(cas: 4248-19-5Formula: C5H11NO2)

tert-Butyl carbamate(cas: 4248-19-5) belongs to anime. Amines have a free lone pair with which they can coordinate to metal centers. Amine–metal bonds are weaker because amines are incapable of backbonding, but they are still important for sensing applications.While stronger than hydrogen bonds, amine–metal bonds are still weaker than both covalent and ionic bonds.Formula: C5H11NO2

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

The author of 《Synthesis, Electronic Spectroscopy, and Photochemistry of Methacrolein Oxide: A Four-Carbon Unsaturated Criegee Intermediate from Isoprene Ozonolysis》 were Vansco, Michael F.; Marchetti, Barbara; Trongsiriwat, Nisalak; Bhagde, Trisha; Wang, Guanghan; Walsh, Patrick J.; Klippenstein, Stephen J.; Lester, Marsha I.. And the article was published in Journal of the American Chemical Society in 2019. Synthetic Route of C8H14O4 The author mentioned the following in the article:

Ozonolysis of isoprene, a most abundant volatile organic compound in the Earth atm., generates the four-carbon unsaturated, methacrolein oxide (MACR-oxide), Criegee intermediate. Initial laboratory synthesis and direct detection of MACR-oxide was achieved by reaction of photolytically-generated, resonance-stabilized iodoalkene radicals with O. MACR-oxide was characterized on its first π* ← π electronic transition using a ground-state depletion method. MACR-oxide exhibited a broad UV-vis spectrum peak at 380 nm with weak oscillatory structure at long wavelengths ascribed to vibrational resonances. Complementary theory predicted two strong π* ← π transitions from extended conjugation across MACR-oxide with overlapping contributions from its four conformers. Electronic promotion to the 11ππ* state agreed well with exptl. data and resulted in non-adiabatic coupling and prompt release of O 1D products observed as anisotropic velocity-map images. This UV-visible detection scheme enables the study of its unimol. and bimol. reactions under thermal conditions relevant to the atm. In the experiment, the researchers used Diethyl 2-methylmalonate(cas: 609-08-5Synthetic Route of C8H14O4)

Diethyl 2-methylmalonate(cas: 609-08-5) belongs to aliphatic hydrocarbons. Aliphatic hydrocarbons belong to the most abundant fraction in crude oil. Aliphatics molecules are linear or branched open-chain structures such as n-alkanes, isoalkanes, cycloalkanes (naphthenes), terpenes and steranes.Synthetic Route of C8H14O4

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

In 2017,Barlaam, Bernard; Cosulich, Sabina; Fitzek, Martina; Germain, Herve; Green, Stephen; Hanson, Lyndsey L.; Harris, Craig S.; Hancox, Urs; Hudson, Kevin; Lambert-van der Brempt, Christine; Lamorlette, Maryannick; Magnien, Francoise; Ouvry, Gilles; Page, Ken; Ruston, Linette; Ward, Lara; Delouvrie, Benedicte published 《Discovery of a novel aminopyrazine series as selective PI3Kα inhibitors》.Bioorganic & Medicinal Chemistry Letters published the findings.Computed Properties of C4H7NO2S The information in the text is summarized as follows:

We report the discovery of a novel aminopyrazine series of PI3Kα inhibitors, designed by hybridizing two known scaffolds of PI3K inhibitors. We describe the progress achieved from the first compounds plagued with poor general kinase selectivity to compounds showing high selectivity for PI3Kα over PI3Kβ and excellent general kinase selectivity. This effort culminated with the identification of compound 5 displaying high potency and selectivity, and suitable physiochem. and pharmacokinetic properties for oral administration. In vivo, compound I showed good inhibition of tumor growth (86% tumor growth inhibition at 50 mg/kg twice daily orally) in the MCF7 xenograft model in mice. The results came from multiple reactions, including the reaction of Ethyl 2-amino-2-thioxoacetate(cas: 16982-21-1Computed Properties of C4H7NO2S)

Ethyl 2-amino-2-thioxoacetate(cas: 16982-21-1) belongs to anime. Reduction of nitro compounds, RNO2, by hydrogen or other reducing agents produces primary amines cleanly (i.e., without a mixture of products), but the method is mostly used for aromatic amines because of the limited availability of aliphatic nitro compounds. Reduction of nitriles and oximes (R2C=NOH) also yields primary amines.Computed Properties of C4H7NO2S

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