Category: esters-buliding-blocks

On June 24, 1999, Strandlund, Gert; Alstermark, Christer; Bjore, Annika; Bjorsne, Magnus; Frantsi, Marianne; Halvarsson, Torbjorn; Hoffmann, Kurt-Jurgen; Lindstedt, Eva-Lotte; Polla, Magnus published a patent.HPLC of Formula: 227940-70-7 The title of the patent was Preparation of 3,7-diazabicyclo[3.3.1]nonane-3-carboxylates as antiarrhythmic agents. And the patent contained the following:

Title compounds [I; R1,R2 = H or alkyl; R1R2 = OCH2CH2O, (CH2)4-5; R3 = CCR10R11AR; A = bond, alkylene, (CH2)nZ, CONR20, etc.; B = bond, alkylene, NR23(CH2)r, O(CH2)r; R = (un)substituted Ph; R4 = COXR9; R9 = alkyl, (un)substituted phenyl(alkyl), -naphthyl; R10 = H or OH; R11,R20,R23 = H or alkyl; X = O or S; Z = NR20, SO0-2, O; n,r = 0-4] were prepared Thus, 4-(NC)C6H4OH was condensed with epichlorohydrin and the product aminated by I (R1 = R2 = H, R4 = CO2CMe3)(II; R3 = H)(preparation given) to give II [R3 = CH2CH(OH)CH2OC6H4(CN)-4]. Data for biol. activity of I were given. The experimental process involved the reaction of tert-Butyl 7-benzyl-9-oxo-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate(cas: 227940-70-7).HPLC of Formula: 227940-70-7

The Article related to diazabicyclononanecarboxylate preparation antiarrhythmic agent, Heterocyclic Compounds (More Than One Hetero Atom): Eight- and Higher-Membered Rings and other aspects.HPLC of Formula: 227940-70-7

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

On October 31, 2015, Stead, Darren; O’Brien, Peter; Sanderson, Adam published an article.Name: tert-Butyl 7-benzyl-9-oxo-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate The title of the article was Investigation of the Lithiation-Trapping of an N-BOC Bispidine-Ketal: Reactivity and Diastereoselectivity. And the article contained the following:

The lithiation-trapping of an N-BOC bispidine-ketal using BuLi/TMEDA has been studied. Key findings include an activating effect of the 4-ketal group on the lithiation and complete diastereoselectivity with methylation and Cu-mediated allylation. In contrast, reduced diastereoselectivity was noted for direct allylation and silylation; mechanistic explanations are proposed. The synthesis of the target compounds was achieved using 7-(phenylmethyl)-3,7-diazabicyclo[3.3.1]nonane-3-carboxylic acid 1,1-dimethylethyl ester (i.e., a bispidine carboxylic acid ester derivative), 9-oxo-7-(phenylmethyl)-3,7-diazabicyclo[3.3.1]nonane-3-carboxylic acid 1,1-dimethylethyl ester (i.e., a bispidine-ketone derivative), 7-(phenylmethyl)Spiro[3,7-diazabicyclo[3.3.1]nonane-9,2′-[1,3]dioxolane]-3-carboxylic acid 1,1-dimethylethyl ester (i.e., a cyclic-ketal-bispidine derivative) as starting materials. The title compounds thus formed included bispidine-diastereomer derivatives, such as (1R,2S,5S)-rel-7-(phenylmethyl)-2-(2-propen-1-yl)-3,7-diazabicyclo[3.3.1]nonane-3-carboxylic acid 1,1-dimethylethyl ester. The experimental process involved the reaction of tert-Butyl 7-benzyl-9-oxo-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate(cas: 227940-70-7).Name: tert-Butyl 7-benzyl-9-oxo-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate

The Article related to lithiation bispidine ketal diastereoselectivity, Heterocyclic Compounds (More Than One Hetero Atom): Eight- and Higher-Membered Rings and other aspects.Name: tert-Butyl 7-benzyl-9-oxo-3,7-diazabicyclo[3.3.1]nonane-3-carboxylate

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

On March 26, 2020, Takemura, Hiroyuki; Morikawa, Akino; Tanaka, Mari; Tatsumi, Akane; Kubota, Yukiko; Kaji, Natsuko; Hasegawa, Ayako; Kumamoto, Fumiko; Obara, Tomoko; Iwanaga, Tetsuo; Sako, Katsuya published an article.SDS of cas: 118-55-8 The title of the article was Syntheses of diaza(hetera)2[1.1.1.1]paracyclophanes by Chapman rearrangement. And the article contained the following:

Diaza(hetera)2[1.1.1.1]paracyclophanes (PCPs) I (X = SO2, CH2; Y = SO2; Q = NH) were prepared by the Chapman rearrangement. This is the first synthesis of highly strained and heteroatom-containing PCPs performed by a rearrangement reaction. The structures of the two precursors, [3.1.3.1]PCPs, e.g., II and [1.1.1.1]PCPs I (X = SO2, CH2, C=O; Y = SO2, C=O; Q = N-C(=O)-o-C6H4-OH), are discussed in detail. In contrast to the small strain of [3.1.3.1]PCPs, e.g., II, [1.1.1.1]PCPs I (Q = N-C(=O)-o-C6H4-OH) release their large strain by bending the aromatic rings and Carom.-X angles. Interestingly, Aromatic-X-Aromatic angles are smaller than those of the corresponding strain-free model compounds The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).SDS of cas: 118-55-8

The Article related to diaza hetera paracyclophane preparation, Heterocyclic Compounds (More Than One Hetero Atom): Eight- and Higher-Membered Rings and other aspects.SDS of cas: 118-55-8

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

Pal, Ashutosh published an article in 2021, the title of the article was Synthesis of salicylate and salicylamide alcohols for the preparation of phosphorodiamidates and ifosfamide prodrugs.COA of Formula: C13H10O3 And the article contains the following content:

Different types of salicylate and salicylamide alcs. for the preparation of phosphorodiamidates and ifosfamide prodrugs were reported. In drug discovery and development, prodrugs were well-known for pharmacokinetic effects of pharmacol. nimble products. Almost 10% of drugs permitted, whole world were classified as prodrugs, where the application of a prodrug method during initial stages of development was an emergent fashion. The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).COA of Formula: C13H10O3

The Article related to hydroxyalkyl benzodioxinone preparation, aldehyde salicylate alc cyclocondensation, alkyl benzoxazinone preparation, salicylamide aldehyde cyclocondensation, Heterocyclic Compounds (More Than One Hetero Atom): Oxazines (Including Morpholine) and other aspects.COA of Formula: C13H10O3

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

Arias, Consuelo; Saavedra, Nicolas; Leal, Karla; Vasquez, Belgica; Abdalla, Dulcineia S. P.; Salazar, Luis A. published an article in 2020, the title of the article was Histological evaluation and gene expression profiling of autophagy-related genes for cartilage of young and senescent rats.Product Details of 2358-84-1 And the article contains the following content:

Autophagy is a cellular mechanism that protects cells from stress by digesting non-functional cellular components. In the cartilage, chondrocytes depend on autophagy as a principal mechanism to maintain cellular homeostasis. This protective role diminishes prior to the structural damage that normally occurs during aging. Considering that aging is the main risk factor for osteoarthritis, evaluating the expression of genes associated with autophagy in senescent cartilage might allow for the identification of potential therapeutic targets for treatment. Thus, we studied two groups of young and senescent rats. A histol. anal. of cartilage and gene expression quantification for autophagy-related genes were performed. In aged cartilage, morphol. changes were observed, such as an increase in cartilage degeneration as measured by the modified Mankin score, a decrease in the number of chondrocytes and collagen II (Col2a1), and an increase in matrix metalloproteinase 13 (Mmp13). Moreover, 84 genes associated with autophagy were evaluated by a PCR array anal., and 15 of them were found to be significantly decreased with aging. Furthermore, an in silico anal. based on by two different bioinformatics software tools revealed that several processes including cellular homeostasis, autophagosome assembly, and aging-as well as several biol. pathways such as autophagy, insulin-like growth factor 1 (IGF-1) signaling, PI3K (phosphoinositide 3-kinase)/AKT (serine/threonine kinase) signaling, and mammalian target of rapamycin (mTOR) signaling-were enriched. In conclusion, the anal. identified some potential targets for osteoarthritis treatment that would allow for the development of new therapeutic strategies for this chronic disease. The experimental process involved the reaction of Oxybis(ethane-2,1-diyl) bis(2-methylacrylate)(cas: 2358-84-1).Product Details of 2358-84-1

The Article related to autophagy gene expression histol evaluation cartilage young senescent, aging, autophagy, osteoarthritis, Mammalian Pathological Biochemistry: Musculoskeletal and Connective Tissue Diseases and other aspects.Product Details of 2358-84-1

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

On October 29, 2015, Lim, Yeon-Hee; Guo, Zhuyan; Ali, Amjad; Edmondson, Scott D.; Liu, Weiguo; Gallo-Etienne, Gioconda V.; Wu, Heping; Gao, Ying-Duo; Stamford, Andrew M.; Yu, Younong; Kevin, Nancy J.; Anand, Rajan; Sha, Deyou; Neelamkavil, Santhosh F.; Hussain, Zahid; Kumar, Puneet; Moningka, Remond; Duffy, Joseph L.; Xu, Jiayi; Jiang, Yu; Sone, Hiroki; Chakrabarti, Anjan published a patent.Quality Control of tert-Butyl (4-(trifluoromethyl)phenyl)carbamate The title of the patent was Preparation of spiropyridooxazinepyrrolidine compounds as factor XIa inhibitors. And the patent contained the following:

The invention provides a compounds of formula I and pharmaceutical compositions comprising one or more said compounds, and methods for using said compounds for treating or preventing thromboses, embolisms, hypercoagulability or fibrotic changes. The compounds are selective factor XIa inhibitors or dual inhibitors of factor XIa and plasma kallikrein. Compounds of formula I wherein Y1 – Y4 are independently CR4 and N; Z is S, SO, SO2 and CO; L is a bond, CONH, NHCO, etc.; M is (un)substituted aryl, heteroaryl, CH2, etc.; R1a is H, halo, CN, etc.; R1b is H, CN, OH, etc.; R2 is H, CN, halo, etc.; each R3 is independently H, halo, CN, etc.; and pharmaceutically acceptable salts thereof, are claimed. Example compound II was prepared by a multistep procedure (procedure given). Example compounds of the invention were tested in an assay to measure effectiveness as inhibitors of human factor XIa and plasma kallikrein. The experimental process involved the reaction of tert-Butyl (4-(trifluoromethyl)phenyl)carbamate(cas: 141940-37-6).Quality Control of tert-Butyl (4-(trifluoromethyl)phenyl)carbamate

The Article related to spiropyridooxazinepyrrolidine compound preparation factor xia inhibitor kallikrein therapy, Heterocyclic Compounds (More Than One Hetero Atom): Oxazines (Including Morpholine) and other aspects.Quality Control of tert-Butyl (4-(trifluoromethyl)phenyl)carbamate

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

On April 27, 2020, Gilbert, Nicolas; Ricard, Simon; Bergeron, Jodrey; Lambolez, Pierre; Daoust, Benoit published an article.Name: Methyl 2-cyclopentanonecarboxylate The title of the article was Synthesis of Exo- and Endocyclic Enamides Through Copper-Catalyzed Regioselective Intramolecular N-Halovinylation. And the article contained the following:

Cross-couplings between amides and 1,2-dihaloalkenes are an efficient and straightforward way to access β-haloenamides which, in turn, can be functionalized into complex, stereodefined enamide motifs. However, the intramol. version of these cross-couplings, leading to cyclic β-haloenamides, was not formally studied. The authors report a study of factors affecting the efficiency of the reaction and its selectivity between potential exo and endo cyclization products. Exo/endo selectivity is largely determined by ring strain, whether it arises from the size of the resulting ring or from the structure of the starting compound, but selectivity can also be modulated by varying reaction conditions. Finally, resulting β-haloenamides readily undergo transition metal-catalyzed reactions, making this sequence a viable way to access highly functionalized cyclic enamides. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Name: Methyl 2-cyclopentanonecarboxylate

The Article related to enamide exo endocycle preparation copper catalyst regioselective intramol halovinylation, Heterocyclic Compounds (More Than One Hetero Atom): Oxazines (Including Morpholine) and other aspects.Name: Methyl 2-cyclopentanonecarboxylate

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

On May 6, 2016, Pasternak, Alexander; Dong, Shuzhi; Gu, Xin; Jiang, Jinlong; Shi, Zhi-Cai; Walsh, Shawn P.; Wu, Zhicai; Yu, Yang; Ferguson, Ronald, II; Guo, Zhiqiang; Frie, Jessica; Suzuki, Takao; Blizzard, Timothy A.; Fu, Qinghong; Vangelder, Kelsey F. published a patent.Recommanded Product: tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate The title of the patent was Spiro[piperidine-azacycle] derivatives as inhibitors of the renal outer medullary potassium channel and their preparation. And the patent contained the following:

The invention provides compounds of formula I and pharmaceutically acceptable salts thereof, which are inhibitor of the ROMK (Kir1.1) channel. The compounds may be used as diuretic and/or natriuretic agents and for the therapy and prophylaxis of medical conditions including cardiovascular diseases such as hypertension, heart failure and chronic kidney disease and conditions associated with excessive salt and water retention. Compounds of formula I wherein A is CH2, CH2CH2 and CH2CH2CH2; B is CH2 and CH2; X is (un)substituted 4-(tetrazol-1-yl)phenyl, (un)substituted oxoisobenzofuranyl, (un)substituted (tetrazol-1-yl)pyridinyl, etc.; Y is O, NH and a bond; Z is (un)substituted Ph, (un)substituted pyridinyl, (un)substituted pyrimidinyl, etc.; n is 0, 1 and 2; R1 is H, D and OH; R2 is H and D; R3 is H, D and alkyl; R4 is H and D; each R5 is independently oxo and (un)substituted alkyl; and pharmaceutically acceptable salts thereof, are claimed. Example compound II was prepared by arylation of 5-[(1R)-2-(2,8-diazaspiro[4.5]dec-8-yl)-1-hydroxyethyl]-4-methyl-2-benzofuran-1(3H)-one with 5-chloro-3-methyl-1,2,4-thiadiazole. The invention compounds were evaluated for their ROMK channel inhibitory activity. From the assay, it was determined that compound II exhibited IC50 value of 0.2508 μM. The experimental process involved the reaction of tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate(cas: 1198284-94-4).Recommanded Product: tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate

The Article related to spiropiperidine azacycle preparation romk channel inhibitor, Heterocyclic Compounds (One Hetero Atom): Spiro Compounds With One Hetero Atom In Each Ring and other aspects.Recommanded Product: tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate

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

On May 6, 2016, Pasternak, Alexander; Dong, Shuzhi; Gu, Xin; Jiang, Jinlong; Shi, Zhi-Cai; Walsh, Shawn P.; Wu, Zhicai; Yu, Yang; Ferguson, Ronald, II; Guo, Zhiqiang; Frie, Jessica; Suzuki, Takao; Blizzard, Timothy A.; Fu, Qinghong; Vangelder, Kelsey F. published a patent.Related Products of 1198284-94-4 The title of the patent was Spiro[piperidine-azacycle] derivatives as inhibitors of the renal outer medullary potassium channel and their preparation. And the patent contained the following:

The invention provides compounds of formula I and pharmaceutically acceptable salts thereof, which are inhibitor of the ROMK (Kir1.1) channel. The compounds may be used as diuretic and/or natriuretic agents and for the therapy and prophylaxis of medical conditions including cardiovascular diseases such as hypertension, heart failure and chronic kidney disease and conditions associated with excessive salt and water retention. Compounds of formula I wherein A is CH2, CH2CH2 and CH2CH2CH2; B is CH2 and CH2; X is (un)substituted 4-(tetrazol-1-yl)phenyl, (un)substituted oxoisobenzofuranyl, (un)substituted (tetrazol-1-yl)pyridinyl, etc.; Y is O, NH and a bond; Z is (un)substituted Ph, (un)substituted pyridinyl, (un)substituted pyrimidinyl, etc.; n is 0, 1 and 2; R1 is H, D and OH; R2 is H and D; R3 is H, D and alkyl; R4 is H and D; each R5 is independently oxo and (un)substituted alkyl; and pharmaceutically acceptable salts thereof, are claimed. Example compound II was prepared by arylation of 5-[(1R)-2-(2,8-diazaspiro[4.5]dec-8-yl)-1-hydroxyethyl]-4-methyl-2-benzofuran-1(3H)-one with 5-chloro-3-methyl-1,2,4-thiadiazole. The invention compounds were evaluated for their ROMK channel inhibitory activity. From the assay, it was determined that compound II exhibited IC50 value of 0.2508 μM. The experimental process involved the reaction of tert-Butyl 1-oxo-2,9-diazaspiro[5.5]undecane-9-carboxylate(cas: 1198284-94-4).Related Products of 1198284-94-4

The Article related to spiropiperidine azacycle preparation romk channel inhibitor, Heterocyclic Compounds (One Hetero Atom): Spiro Compounds With One Hetero Atom In Each Ring and other aspects.Related Products of 1198284-94-4

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

On December 31, 2022, Yashima, Takumi; Tani, Marie; Kurita, Rei published an article.HPLC of Formula: 118-55-8 The title of the article was Filamentous crystal growth in organic liquids and selection of crystal morphology. And the article contained the following:

Filamentous crystals such as whisker crystals are often seen not only in metallic liquids, but also in organic liquids and solutions They are interesting as reinforce materials. However, it remains challenging to induce filamentous crystals due to an incomplete understanding of the mechanisms behind their formation. In this paper, we investigate filamentous crystal growth in viscous organic liquids It is found that filamentous crystals grow via an extraordinary dynamical path, where the mols. locally evaporate to bubbles and then redeposite to the tip of growing crystalline filaments. We also succeeded in controlling whether filamentous or faceted crystal growth is selected by inducing or suppressing the bubbles. The experimental process involved the reaction of Phenyl Salicylate(cas: 118-55-8).HPLC of Formula: 118-55-8

The Article related to filamentous crystal growth organic liquid morphol, Crystallography and Liquid Crystals: Crystal Morphology (Habit), Orientation, Crystallinity and other aspects.HPLC of Formula: 118-55-8

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