Category: esters-buliding-blocks

On February 5, 2021, Yang, Xiaobao; Jiang, Biao; Song, Xiaoling; Sun, Ning; Ren, Chaowei; Sun, Renhong; Qu, Xiaojuan; Liu, Haixia; Qiu, Xing published a patent.Category: esters-buliding-blocks The title of the patent was Diastereoselective preparation of (aryl)amides derivatives as antitumor agents for EGFR degradation. And the patent contained the following:

The present invention relates to the diastereoselective preparation of (aryl)amides derivatives as antitumor agents for EGFR degradation In particular, (aryl)amide derivatives I [wherein, EGFR binders can bind to EGFR protein; ULM is II; wherein, A is selected from -CH2-, -(C=O)-; B, X, Y, and Z are each independently selected from CH and N; R is -S-, -SO-, -NH-, etc., or not present; D is -(C=O)-, or D does not exist; or, ULM is III, wherein, Z is selected from -(C=O)-, or Z does not exist; or, ULM is IV, wherein, A is selected from -CH2-, -NR’-, -O-, -S-, -(C=O)-, wherein R’ is selected from H, linear or branched C1-C10 alkyl or C3-C10 cycloalkyl; B is -(C=O)-, or B does not exist; D1, D2, D3, D4, D5, D6, D7, D8 are each independently selected from F, Cl, Br, etc.; LIN represents a linking group connected to EGFR binders and ULM through covalent bonds.] bifunctional compound or a pharmaceutically acceptable salt, isomer, prodrug, polymorph or solvate thereof were prepared The experimental process involved the reaction of tert-Butyl 2-(2-(2-(tosyloxy)ethoxy)ethoxy)acetate(cas: 882518-89-0).Category: esters-buliding-blocks

The Article related to aryl amide derivative preparation antitumor agent egfr degradation, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.Category: esters-buliding-blocks

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

On February 17, 2021, Hess, Stephan N.; Mo, Xiaobin; Wirtz, Conny; Fuerstner, Alois published an article.Formula: C12H16O7 The title of the article was Total Synthesis of Limaol. And the article contained the following:

A nonthermodynamic array of four skipped methylene substituents on the hydrophobic tail renders limaol (I), a C40-polyketide of marine origin, unique in structural terms. This conspicuous segment was assembled by a two-directional approach and finally coupled to the polyether domain by an allyl/alkenyl Stille reaction under neutral conditions. The core region itself was prepared via a 3,3′-dibromo-BINOL-catalyzed asym. propargylation, a gold-catalyzed spirocyclization, and introduction of the southern sector via substrate-controlled allylation as the key steps. The experimental process involved the reaction of (2R,3S,4R)-2-(Acetoxymethyl)-3,4-dihydro-2H-pyran-3,4-diyl diacetate(cas: 2873-29-2).Formula: C12H16O7

The Article related to limaol total synthesis stille asym propargylation spirocyclization, Biomolecules and Their Synthetic Analogs: Other Bacterial and Fungal Metabolites and other aspects.Formula: C12H16O7

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

On September 6, 2019, Zhang, Xingxian; He, Kailun; Wang, Wenbing; Wang, Xiaoju; Zheng, Xiaoliang published a patent.HPLC of Formula: 882518-89-0 The title of the patent was Compound targeting EGFR protein degradation useful in treatment of cancer and its preparation. And the patent contained the following:

The invention relates to compounds of formula I and II targeting EGFR protein degradation useful in treatment of cancer and its preparation Compounds I and II, wherein R is C1-6 alkyl; m is an integer of 1-7; n is an integer of 1-6; their pharmaceutically acceptable salts, are claimed. The inventive compound shows excellent EGFR-degrading action and high antitumor activity, and can be applied in cancer prevention and/or treatment. The experimental process involved the reaction of tert-Butyl 2-(2-(2-(tosyloxy)ethoxy)ethoxy)acetate(cas: 882518-89-0).HPLC of Formula: 882518-89-0

The Article related to pyrimidine derivative preparation treatment cancer egfr degrading, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.HPLC of Formula: 882518-89-0

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

On January 9, 2003, Basarab, Gregory; Eyermann, Joseph; Gowravaram, Madhusudhan; Green, Oluyinka; MacPherson, Lawrence; Morningstar, Marshall; Nguyen, Thanh published a patent.HPLC of Formula: 141940-37-6 The title of the patent was Preparation of pyrazolo[3,4-d]pyrimidines for inhibiting H. pylori infections. And the patent contained the following:

Title compounds I [wherein R1 and R2 = independently H, NH2, or (un)substituted (cyclo)alkyl, (cyclo)alkenyl, alkynyl, aryl, alkoxy, or heterocyclyl; R3 = (un)substituted monocyclic or bicyclic ring system comprising 0-3 heteroatoms independently selected from N, O, or S; R4 = (un)substituted alkyl or (di)alkylamino, with exceptions; Y = CH2, CHCH3, SO, or SO2; and pharmaceutically acceptable salts thereof] were prepared For example, 6-hydrazino-1-isobutyl-3-methylpyrimidine-2,4-(1H,3H)-dione (4-step preparation given) was condensed with 1-naphthaldehyde in MeOH to give the hydrazone. Cyclocondensation with N-(4-formylphenyl)acetamide in DMF afforded II. Compounds of the invention exhibited glutamate racemase (MurI) activity with IC50 values of < 400 μM. Thus, I and pharmaceutical compositions containing them are useful in the treatment or prophylaxis of Helicobacter pylori (H. pylori) infection (no data). The experimental process involved the reaction of tert-Butyl (4-(trifluoromethyl)phenyl)carbamate(cas: 141940-37-6).HPLC of Formula: 141940-37-6

The Article related to pyrazolopyrimidine preparation antibacterial helicobacter pylori, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.HPLC of Formula: 141940-37-6

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

On June 28, 2018, Grew, Andrew P.; Zimmermann, Kurt; Wang, Jing; Berlin, Michael; Dong, Hanqing; Ishchenko, Alexey; Qian, Yimin; Crews, Craig M.; Jaime-Figueroa, Saul; Burslem, George published a patent.Name: tert-Butyl 2-(2-(2-(tosyloxy)ethoxy)ethoxy)acetate The title of the patent was Preparation of heterocyclic compounds as EGFR proteolysis targeting chimeric molecules and associated methods of use. And the patent contained the following:

The disclosure relates to bifunctional compounds of formula I, which find utility as modulators of receptor tyrosine kinase (RTK) proteins. The disclosure is directed to bifunctional compounds of formula I, which contain on one end a ligand which binds to an E3 ubiquitin ligase and on the other end a moiety which binds a target protein, such that the target protein is placed in proximity to the ubiquitin ligase to effectuate ubiquitination, and therefore, degradation (and inhibition) of the target protein. The disclosure exhibits a broad range of pharmacol. activities associated with degradation/inhibition of target protein. Diseases or disorders that result from aggregation or accumulation of the target protein are treated or prevented with compounds and compositions of the disclosure. Compounds of formula I wherein ULM is a small mol. E3 ubiquitin ligase binding moiety; PTM is a small mol. receptor tyrosine kinase protein targeting moiety; L is a bond and a chem. linking moiety; and pharmaceutically acceptable salts, enantiomers, stereoisomers, solvates, polymorphs and prodrugs thereof, are claimed. Example compound II was prepared by a multistep procedure (procedure given). The invention compounds were evaluate for their EGFR inhibitory activity. From the assay, it was determined that compound II exhibited IC50 values of in the range of 0.0021 μM to 12 μM. The experimental process involved the reaction of tert-Butyl 2-(2-(2-(tosyloxy)ethoxy)ethoxy)acetate(cas: 882518-89-0).Name: tert-Butyl 2-(2-(2-(tosyloxy)ethoxy)ethoxy)acetate

The Article related to heterocycle preparation egfr proteolysis targeting chimeric mol, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.Name: tert-Butyl 2-(2-(2-(tosyloxy)ethoxy)ethoxy)acetate

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

Gupta, Poonam published an article in 2021, the title of the article was Synthesis of related substances of antipsychotic drug Risperidone.SDS of cas: 517-23-7 And the article contains the following content:

European pharmacopeia related substances I [ R1 = H, CH3; R2 = (5-fluoro-1,2-benzoxazol-3-yl), (4-fluoro-2-hydroxy-benzoyl) etc] (impurities) was obtained during the synthesis of Risperidone. Described the detection, origin, synthesis, characterization and control of the related substances, which was improved the com. process. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).SDS of cas: 517-23-7

The Article related to methyl piperidyl ethyl tetrahydropyridopyrimidinone preparation, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.SDS of cas: 517-23-7

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

On October 8, 2020, Fu, Zhifei; Luo, Miaorong; Zhang, Yang; Cai, Yalei; Zhu, Wu; Li, Jian; Chen, Shuhui published a patent.Safety of tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate The title of the patent was Nitrogen-containing spiro derivative as RET inhibitor. And the patent contained the following:

The invention disclosed a kind of nitrogen-containing spiro derivative as RET inhibitor. The claimed compound is shown in structure I (T = CN or N; R1,R2,R3 = H, halo, C1-6 alkyl, etc.; R4 = H, amino, hydroxy, etc.; D1,D2 = (un)substituted -CH2CH2-; D3 = methylene, carbonyl, etc.; D4 = ethylene, propylene, -OCH2CH2-, etc.). The claimed compound is prepared via multiple steps (procedure given). The prepared compound can be used as RET inhibitor for treating RET mediated disease. The experimental process involved the reaction of tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate(cas: 1198284-94-4).Safety of tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate

The Article related to nitrogen containing spiro derivative preparation ret inhibitor, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.Safety of tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate

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

On July 30, 2014, Han, Xu; Bian, Shudan; Liang, Yong; Houk, K. N.; Braunschweig, Adam B. published an article.Name: Bis(2,5-dioxopyrrolidin-1-yl) glutarate The title of the article was Reactions in Elastomeric Nanoreactors Reveal the Role of Force on the Kinetics of the Huisgen Reaction on Surfaces. And the article contained the following:

The force dependence of the copper-free Huisgen cycloaddition between an alkyne and a surface-bound azide was examined in elastomeric nanoreactors. These studies revealed that pressure and chain length are critical factors that determine the reaction rate. These experiments demonstrate the central role of pressure and surface structure on interfacial processes that are increasingly important in biol., materials science, and nanotechnol. The experimental process involved the reaction of Bis(2,5-dioxopyrrolidin-1-yl) glutarate(cas: 79642-50-5).Name: Bis(2,5-dioxopyrrolidin-1-yl) glutarate

The Article related to elastomeric nanoreactor force kinetics huisgen surface, Physical Organic Chemistry: Ring Formation, Cleavage, Enlargement, and Contraction and other aspects.Name: Bis(2,5-dioxopyrrolidin-1-yl) glutarate

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

On March 1, 2020, Arrigo, Rosa; Gallarati, Simone; Schuster, Manfred E.; Seymour, Jake M.; Gianolio, Diego; da Silva, Ivan; Callison, June; Feng, Haosheng; Proctor, John E.; Ferrer, Pilar; Venturini, Federica; Grinter, David; Held, Georg published an article.Related Products of 3976-69-0 The title of the article was Influence of Synthesis Conditions on the Structure of Nickel Nanoparticles and their Reactivity in Selective Asymmetric Hydrogenation. And the article contained the following:

Unsupported and SiO2-supported Ni nanoparticles (NPs) were synthesized via hot-injection colloidal route using oleylamine (OAm) and trioctylphosphine (TOP) as reducing and protective agents, resp. By adopting a multi-length scale(coating process) structural characterization, it was found that by changing equivalent of OAm and TOP not only the size of the nanoparticles is affected but also the Ni electronic structure. The synthesized NPs were modified with (R,R)-tartaric acid (TA) and investigated in the asym. hydrogenation of Me acetoacetate to chiral methyl-3-hydroxy butyrate. The comparative anal. of structure and catalytic performance for the synthesized catalysts has enabled us to identify a Ni metallic active surface, whereby the activity increases with the size of the metallic domains. Conversely, at the high conversion obtained for the unsupported NPs there was no impact of particle size on the selectivity. (R)-selectivity was very high only on catalysts containing pos. charged Ni species such as over the SiO2-supported NiO NPs. This work shows that the chiral modification of metallic Ni NPs with TA is insufficient to maintain high selectivity towards the (R)-enantiomer at long reaction times and provides guidance for the engineering of long-term stable enantioselective catalysts. The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Related Products of 3976-69-0

The Article related to nickel nanoparticle asym hydrogenation, Catalysis, Reaction Kinetics, and Inorganic Reaction Mechanisms: Reaction Kinetics and other aspects.Related Products of 3976-69-0

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

On April 14, 2021, Rong, Jinchuang; Zhong, Jiang; Yan, Wanlong; Liu, Maochen; Zhang, Yalei; Qiao, Yongluo; Fu, Changqing; Gao, Fei; Shen, Liang; He, Haifeng published an article.Product Details of 517-23-7 The title of the article was Study on waterborne self-healing polyurethane with dual dynamic units of quadruple hydrogen bonding and disulfide bonds. And the article contained the following:

The novel self-healable waterborne polyurethanes (WPU) with the synergistic reversible units of aliphatic disulfide bonds and quadruple hydrogen bonding have been successfully prepared The ureidopyrimidone (UPy) functional motifs were introduced into polymer backbones of polyurethane, where also placed the reversible disulfide bonds. The quadruple hydrogen bonds of UPy groups endowed the material a strong phys. crosslinking network, which provided a superior Young’s moduli. The features of dual dynamic structure could also produce a relatively low active energy of 36.1 kJ/mol, resulting in a good self-repairing efficiency of 94% under a mild condition. Furthermore, the influence of self-healing time and different repairing temperature on the healed performance was also systematically investigated. In order to describe the self-healing progress of multiple dynamic units, a phys. model was used to study the evolution of self-repairing efficiency with variable healing time, indicating that quadruple H-bonding and disulfide bonds predominantly supported time dependent reconstruction of phys. crosslinking network to recover the original mech. property. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Product Details of 517-23-7

The Article related to waterborne self healing polyurethane, Chemistry of Synthetic High Polymers: Organic Condensation and Step Polymerization and other aspects.Product Details of 517-23-7

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