Month: November 2022

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 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 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 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 29, 2012, Curran, Dennis P.; Sinha, Mantosh K.; Zhang, Kai; Sabatini, Jesse J.; Cho, Dae-Hyun published an article.Recommanded Product: 3976-69-0 The title of the article was Binary fluorous tagging enables the synthesis and separation of a 16-stereoisomer library of macrosphelides. And the article contained the following:

Fluorous mixture synthesis minimizes the effort to synthesize small-mol. libraries by labeling the mols. rather than the reaction vessels. Reactants are labeled with fluorinated tags and products can later be demixed based on the fluorine content. A limit in the number of available tags can be overcome by using binary encoding so that a total of four tags can label uniquely a library of 16 compounds This strategy, however, means that separation based on fluorine content alone is not possible. Here, we solve this problem by selectively removing one tag after an initial demixing step; a second demixing provides each individual compound The usefulness of this strategy is demonstrated by the synthesis of a library that contains all 16 diastereomers of the natural products macrosphelides A and E. Macrosphelide D was not in this library, and so its assigned structure was incorrect. We determined its constitution by using NMR spectroscopy and its configuration by synthesizing four candidate stereoisomers. The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Recommanded Product: 3976-69-0

The Article related to macrosphelide stereoisomer library preparation binary fluorous tagging, Biomolecules and Their Synthetic Analogs: Other Bacterial and Fungal Metabolites and other aspects.Recommanded Product: 3976-69-0

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

On September 28, 2006, Gonzalez, Jesus E.; Wilson, Dean M.; Termin, Andreas P.; Grootenhuis, Peter D. J.; Zhang, Yulian; Petzoldt, Benjamin J.; Fanning, Lev Tyler Dewey; Neubert, Timothy D.; Tung, Roger D.; Martinborough, Esther; Zimmerman, Nicole published a patent.Reference of tert-Butyl (4-(trifluoromethyl)phenyl)carbamate The title of the patent was Preparation of quinazolines as modulators of ion channels. And the patent contained the following:

The title compounds [I; NR1R2 = (un)substituted 3-12 membered monocyclic or bicyclic (un)saturated ring having 0-3 heteroatoms selected from N, S or O; ring A = (un)substituted 5-7 membered aryl, 8-10 membered bicyclic aryl having 0-3 heteroatoms selected from N, S or O, etc.; x = 0-4; R3 = QR (wherein Q = a bond, alkylidene wherein up to two non-adjacent methylene units are optionally replaced by S, O, CS, etc.; R = halo, NO2, CN, etc.); with provisos], useful as inhibitors of voltage-gated sodium channels and calcium channels, were prepared Thus, reacting 2-(4-chloro-7-methylquinazolin-2-yl)phenol with 4-aminopiperidine in the presence of Et3N in CH2Cl2 afforded 89% II. Representative compounds I were found to possess desired N-type calcium channel modulation activity and selectivity (no specific data given). Also, representative compounds I were found to possess desired voltage gated sodium channel activity and selectivity (no specific data given). The invention also provides pharmaceutically acceptable compositions comprising the compounds I and methods of using the compositions in the treatment of various disorders. The experimental process involved the reaction of tert-Butyl (4-(trifluoromethyl)phenyl)carbamate(cas: 141940-37-6).Reference of tert-Butyl (4-(trifluoromethyl)phenyl)carbamate

The Article related to quinazoline preparation modulator sodium calcium ion channel analgesic, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.Reference of tert-Butyl (4-(trifluoromethyl)phenyl)carbamate

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

On August 23, 2018, Fan, Mengyang; Qin, Luoheng; Wei, Yi; Zhou, Guoqiang; Zhou, Jingye published a patent.Synthetic Route of 1198284-94-4 The title of the patent was Preparation of aminopyrimidine compounds as SSAO inhibitors. And the patent contained the following:

The invention provides compounds of the formula I (wherein R1 is substituted piperidinyl, substituted 2,8-diazaspiro[4.5]decan-1-one, substituted piperazinyl, etc.) and pharmaceutically acceptable salts of the compounds, methods of treating patients for liver disease, and processes for preparing the compounds Example compound II�HCl was prepared by BOC-deprotection of tert-Bu N-[(E)-3-fluoro-2-[[2-(2-methyl-1-oxo-2,8-diazaspiro[4.5]decan-8-yl)pyrimidin-5-yl]oxymethyl]allyl]carbamate. The invention compounds were evaluated for their SSAO inhibitory activities (some data given). The experimental process involved the reaction of tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate(cas: 1198284-94-4).Synthetic Route of 1198284-94-4

The Article related to aminopyrimidine preparation ssao inhibitor nonalcoholic steatohepatitis, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.Synthetic Route of 1198284-94-4

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

On September 17, 2021, Jiang, Meifen; Liu, Minjie; Yu, Chao; Cheng, Dang; Chen, Fener published an article.Computed Properties of 517-23-7 The title of the article was Fully Continuous Flow Synthesis of 3-Chloro-4-oxopentyl Acetate: An Important Intermediate for Vitamin B1. And the article contained the following:

A fully continuous flow synthesis of 3-chloro-4-oxopentyl acetate, an important intermediate for vitamin B1, was developed. This continuous flow manufacturing included two chem. transformations and an inline extraction step without intermediate purification and solvent exchange. In this work, the traditional synthetic route for batch operation was efficiently simplified via a series of separated screening tests in flows under various conditions. The authors found that the chlorination reaction can be carried out in only 30 s at room temperature by flow. The decarboxylation/acylation step was also simplified by using a cross-mixer, so that acetic anhydride was no longer required in the acylation reaction. A computational fluid dynamics simulation was carried out to study the improved micromixing of liquid-liquid two-phase streams. Finally, 3-chloro-4-oxopentyl acetate was obtained in a 90% isolated yield with a product purity of 96% and a total residence time of approx. 32 min. This fully continuous process was operated smoothly for 12 h, and approx. 19.1 g of the desired product was generated with a production rate of 1.79 g h-1. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Computed Properties of 517-23-7

The Article related to chlorooxopentyl acetate preparation vitamin b1 intermediate continuous flow, Aliphatic Compounds: Esters, Linear Anhydrides, Acyl Peroxides, and Acyl Halides and other aspects.Computed Properties of 517-23-7

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

On August 23, 2018, Fan, Mengyang; Qin, Luoheng; Wei, Yi; Zhou, Guoqiang; Zhou, Jingye published a patent.Product Details of 1198284-94-4 The title of the patent was Preparation of aminopyrimidine compounds useful as semicarbazide-sensitive amino oxidase (SSAO) inhibitors. And the patent contained the following:

The invention provides compounds of the formula I (wherein R1 is substituted piperidinyl, substituted 2,8-diazaspiro[4.5]decan-1-one, substituted piperazinyl, etc.) and pharmaceutically acceptable salts of the compounds, methods of treating patients for liver disease, and processes for preparing the compounds Example compound II�HCl was prepared by BOC-deprotection of tert-Bu N-[(E)-3-fluoro-2-[[2-(2-methyl-1-oxo-2,8-diazaspiro[4.5]decan-8-yl)pyrimidin-5-yl]oxymethyl]allyl]carbamate. The invention compounds were evaluated for their SSAO inhibitory activities (some data given). The experimental process involved the reaction of tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate(cas: 1198284-94-4).Product Details of 1198284-94-4

The Article related to aminopyrimidine semicarbazide sensitive amino oxidase inhibitor liver disease, Heterocyclic Compounds (More Than One Hetero Atom): Pyrimidines and Quinazolines and other aspects.Product Details of 1198284-94-4

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

On March 31, 2012, Curran, Dennis P.; Sinha, Mantosh K.; Zhang, Kai; Sabatini, Jesse J.; Cho, Dae-Hyun published an article.Name: (R)-Methyl 3-hydroxybutanoate The title of the article was Binary fluorous tagging enables the synthesis and separation of a 16-stereoisomer library of macrosphelides [Erratum to document cited in CA156:230324]. And the article contained the following:

On page 129, it erroneously stated the authors had no competing financial interests; the HTML and PDF versions have been corrected The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Name: (R)-Methyl 3-hydroxybutanoate

The Article related to erratum macrosphelide stereoisomer library preparation binary fluorous tagging, Biomolecules and Their Synthetic Analogs: Other Bacterial and Fungal Metabolites and other aspects.Name: (R)-Methyl 3-hydroxybutanoate

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