Tag: 100-200

On August 18, 1994, Maier, Franz Karl; Ebert, Wolfgang; Lee-Vaupel, Mary; Gries, Heinz; Conrad, Juergen published a patent.Name: Methyl 2-(3-formylphenyl)acetate The title of the patent was Preparation of meso-tetraphenylporphyrin complexes as diagnostic and therapeutic agents. And the patent contained the following:

Title complexes comprising I [R1 = VCOA, VSO2A, VP(O)A2, NECH2COA; A = OH, OR4, NR5R6; E = acyl, alkylsulfonyl, carboxyalkyl, etc.; R2 = groups cited for R1 and R3; R3 = H, halo, alky; R4 = alkyl, CH2Ph; R5,R6 = H, hydrocarbyl, aryl(alkyl); NR5R6 = heterocyclyl; V = (un)substituted alkylene] and an ion of elements having Z = 21-32, 38, 39, 42-51, and 58-83 were prepared Thus, Mn3+ {5,10,15,20-tetrakis[4-(carboxymethoxy)phenyl]porphyrin} chloride was prepared in 3 steps from 5,10,15,20-tetrakis(4-hydroxyphenyl)porphyrin. Physiol. compatibility and relaxivity data for 2 I were given. The experimental process involved the reaction of Methyl 2-(3-formylphenyl)acetate(cas: 142327-44-4).Name: Methyl 2-(3-formylphenyl)acetate

The Article related to mesotetraphenylporphyrin complex preparation diagnostic therapeutic, Physical Organic Chemistry: Oxidation-Reduction, Including Dehydrogenation and Hydrogenolysis and other aspects.Name: Methyl 2-(3-formylphenyl)acetate

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

On April 5, 2022, Wang, Yonggang; Lin, Zhaiwei; Hu, Shuanghua published a patent.Safety of Ethyl 3-fluoro-2-methylbenzoate The title of the patent was Preparation of pyridazinone derivatives and its application thereof. And the patent contained the following:

The present invention relates to the preparation of pyridazinone derivatives and its application thereof. In particular, pyridazinone derivative I (wherein, R1 is H, optionally substituted phosphate group or -C(=O)Y1, -C(=O)-O-Y1, -(CH2)-O-(C=O)-Y1, (CH2)- O-(C=O)-O-Y1, -(CHCH3)-O-(C=O)-Y1 and -(CHCH3)-O-(C=O)-O-Y1; Y1 is optionally substituted C1-10 alkyl, optionally substituted C3-8 cycloalkyl, optionally substituted aryl, etc.; R2 and R3 can be optionally independently H, C1-6 alkyl, -C(O)-C1-6 alkyl, halogen, -CF3, -CN, etc.; R4 is (R7)(R8)CH- (here, R7 and R8 are are optionally substituted aryl, and optionally substituted heteroaryl; wherein the substituents are independent C1-6 alkyl, -C(O)- C1-6 alkyl, etc.)). Further, (or II (here, R9, R10 are optionally substituted aryl, and optionally substituted heteroaryl; wherein the substituents are independent C1-6 alkyl, -C(O)- C1-6 alkyl, C1-6 haloalkyl, halogen, -CF3, etc.; R11 is H, C1-3 alkyl, C1-3 haloalkyl or C1-3 alkoxy); R7 and R8 can be linked to form a ring structure III (where n and m can be independently 0-3, Q is CR*R**, NR*, O, S, SO, SO2; R* and R** are independently H and optionally substituted C1-6 alkyl); R5 and R6 are independently selected from F, CH3 and CF3, and R5 and R6 are not selected as CH3 at the same time) and its pharmaceutically acceptable salts, solvates, hydrates, N-oxides, polycrystals, prodrugs, co-crystals, tautomers, stereoisomers or their mixtures, isotopically labeled derivatives were prepared The inventive compounds of the present invention can be used as anti-influenza drugs having CEN (cap-dependent endonuclease) inhibition. The experimental process involved the reaction of Ethyl 3-fluoro-2-methylbenzoate(cas: 114312-57-1).Safety of Ethyl 3-fluoro-2-methylbenzoate

The Article related to pyridopyridazine dione derivative preparation antiinfluenza drug, Heterocyclic Compounds (More Than One Hetero Atom): Pyridazines, Cinnolines, and Phthalazines and other aspects.Safety of Ethyl 3-fluoro-2-methylbenzoate

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

On February 18, 2022, Lin, Zhaiwei; Cui, Baicheng published a patent.Name: Ethyl 3-fluoro-2-methylbenzoate The title of the patent was Preparation of pyridazinone derivative and its application for preventing, alleviating or treating viral infection. And the patent contained the following:

The present invention relates to the preparation of pyridazinone derivative and its application for preventing, alleviating or treating viral infection. In particular, the pyridazinone derivatives I (wherein, R1 = H or -C(=O)Y1, -C(=O)-O-Y1, -(CH2)-O-(C=O)-Y1, -(CH2)-O-(C=O)-OY1, -(CHCH3)-O-(C=O)-Y1 and -(CHCH3)-O-(C=O)-O-Y1; Y1 is optionally substituted C1-10 alkyl, optionally substituted C3-8 cycloalkyl, optionally substituted aryl, optionally substituted heteroaryl, optionally substituted heterocyclyl, monosubstituted amino, disubstituted amino, and -C(R*)2NHR**; and each R* and R** is independently hydrogen or optionally substituted C1-6 alkyl; R2 and R3 = H, D, C1-6 alkyl, -C(O)-C1-6 alkyl, halogen, -CF3, -CN, -COOR*, -OR*, (CH2)qNR*R**, -C(O)-NR*R**; R4 is (un)substituted (hetero)arylmethyl). On further, ( R2 and R3 can be connected to form a ring to form an optionally substituted cycloalkyl, an optionally substituted heterocyclyl and an optionally substituted cycloalkenyl; R* and R** are independently H and optionally substituted C1-6 alkyl; q is 0-6; R7 and R8 are optionally substituted aryl, and optionally substituted heteroaryl; wherein the substituents are independent C1-6 alkyl, -C(O)-C1-6 alkyl, halogen, -CF3, – CN, -COOR*, -OR*, -(CH2)qNR*R**,-C(O)-NR*R**; R* and R** = H, D and optionally substituted C1-6 alkyl, q is 0-6; R7 and R8 can be linked to form the structure III; n and m = 0-3, Q = CR*R**, NR*, O, S, SO, SO2; and R* and R** are independently H and optionally substituted C1-6 alkyl) and its pharmaceutically acceptable salts, solvates, hydrates, polycrystals, prodrugs, co-crystals, tautomers, and stereoisomers thereof was prepared More specifically, the compounds of the present invention can be used as anti-influenza drugs with CEN inhibitory effect. The experimental process involved the reaction of Ethyl 3-fluoro-2-methylbenzoate(cas: 114312-57-1).Name: Ethyl 3-fluoro-2-methylbenzoate

The Article related to pyridazinone derivative preparation viral infection treatment, Heterocyclic Compounds (More Than One Hetero Atom): Pyridazines, Cinnolines, and Phthalazines and other aspects.Name: Ethyl 3-fluoro-2-methylbenzoate

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

On April 30, 2018, Osawa, Tsutomu; Wakasugi, Masahiro; Kizawa, Tomoko; Borovkov, Victor; Inoue, Yoshihisa published an article.Reference of (R)-Methyl 3-hydroxybutanoate The title of the article was Enantio-differentiating hydrogenation of alkyl 3-oxobutanoates over tartaric acid-modified Ni catalyst: Enthalpy-entropy compensation effect as a tool for elucidating mechanistic features. And the article contained the following:

The enantio-differentiating hydrogenations of a series of alkyl 3-oxobutanoates were carried out at the temperatures ranging from 333 to 393K over the (R,R)-tartaric acid-modified Ni catalyst prepared from com. available Ni powder to achieve high enantiomeric excesses of 91-94%. It was demonstrated that the enantio-selectivity was not a simple function of the reaction temperature, being enhanced in the low temperature region to reach a maximum at 363-373K and then decreased at higher temperatures Nevertheless, all the differential enthalpies and entropies of activation calculated from the enantiomer ratios in the low and high temperature regions compensated with each other, indicating the same enantio-differentiation mechanism over the entire temperature range. A plausible enantio-differentiation mechanism explaining the effects of hydrogenation temperature on the enantio-selectivity is proposed. The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Reference of (R)-Methyl 3-hydroxybutanoate

The Article related to alkyl oxobutanoate hydrogenation mechanism kinetics thermodn, Physical Organic Chemistry: Oxidation-Reduction, Including Dehydrogenation and Hydrogenolysis and other aspects.Reference of (R)-Methyl 3-hydroxybutanoate

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

On January 6, 2012, Jacolot, Maiwenn; Jean, Mickael; Levoin, Nicolas; van de Weghe, Pierre published an article.Product Details of 3976-69-0 The title of the article was The Prins Reaction Using Ketones: Rationalization and Application toward the Synthesis of the Portentol Skeleton. And the article contained the following:

We report a TMSI-promoted Prins cyclization reaction with ketones as carbonyl partners to prepare polysubstituted chiral spirotetrahydropyrans. In the presence of racemic 2-methylcyclohexanone a dynamic kinetic resolution occurred affording one stereoisomer. The observed enantiospecificity has been rationalized by DFT calculation The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Product Details of 3976-69-0

The Article related to crystal mol structure nitro oxaspiro undecanyl benzamide, chiral spiropyran portentol skeleton preparation, dft mechanism calculation prins cyclization ketone, Heterocyclic Compounds (One Hetero Atom): Spiro Compounds With One Hetero Atom In Each Ring and other aspects.Product Details of 3976-69-0

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

On October 14, 2019, Grell, Yvonne; Demirel, Nemrud; Harms, Klaus; Meggers, Eric published an article.SDS of cas: 707-07-3 The title of the article was Chiral Bis(oxazoline) Ligands as C2-Symmetric Chiral Auxiliaries for the Synthesis of Enantiomerically Pure Bis-Cyclometalated Rhodium(III) Complexes. And the article contained the following:

The synthesis of enantiomerically pure bis-cyclometalated rhodium(III) complexes using chiral bis(oxazoline) ligands as C2-sym. chiral auxiliaries is described. Bis(oxazolines) are versatile chiral ligands for asym. catalysis but have not been applied to the resolution of racemic mixtures of transition-metal complexes. Due to their C2 symmetry, chiral bis(oxazolines) are particularly useful for the synthesis of nonracemic transition-metal complexes with lower symmetry, and this is demonstrated with the synthesis of an enantiomerically pure rhodium(III) complex containing two different cyclometalated ligands. The experimental process involved the reaction of (Trimethoxymethyl)benzene(cas: 707-07-3).SDS of cas: 707-07-3

The Article related to bisoxazoline chiral auxiliary enantioselective cyclometalated rhodium complex preparation, crystal structure mol chiral biscyclometalated rhodium complex, Organometallic and Organometalloidal Compounds: Group Viii – Co, Ni, Ru, Rh, Pd, Os, Ir, Pt and other aspects.SDS of cas: 707-07-3

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

On August 2, 2019, Maejima, Saki; Yamaguchi, Eiji; Itoh, Akichika published an article.Application of 10472-24-9 The title of the article was Visible Light/Molecular-Iodine-Mediated Intermolecular Spirolactonization Reaction of Olefins with Cyclic Ketones. And the article contained the following:

In this study, intermol. spirolactonization via an iodine/visible-light-mediated C-C/C-O bond formation reaction was developed. The developed reaction proceeded to form quaternary carbon centers via carboesterification between cyclic β-keto esters and olefins, affording spirolactone derivatives, e.g., I, in a single step. In addition, the mechanistic investigation revealed that the generation of iodine radicals from mol. iodine driven by visible-light irradiation is a crucial step. The developed reaction proceeded under milder conditions than previously reported procedures as iodine played a role of a conventional transition-metal catalyst, realizing an environmentally friendly mol. transformation. The experimental process involved the reaction of Methyl 2-cyclopentanonecarboxylate(cas: 10472-24-9).Application of 10472-24-9

The Article related to olefin cyclic ketone spirolactonization iodine visible light, spirocyclic lactone preparation, iodine visible light spirolactonization mediator, Heterocyclic Compounds (One Hetero Atom): Spiro Compounds With One Hetero Atom In Each Ring and other aspects.Application of 10472-24-9

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

On July 4, 2019, Shershnev, Ivan; Dar’in, Dmitry; Chuprun, Sergey; Kantin, Grigory; Bakulina, Olga; Krasavin, Mikhail published an article.Safety of 3-Acetyldihydrofuran-2(3H)-one The title of the article was The use of α-diazo-γ-butyrolactone in the Buchner-Curtius-Schlotterbeck reaction of cyclic ketones: A facile entry into spirocyclic scaffolds. And the article contained the following:

The first example of the Buchner-Curtius-Schlotterbeck reaction of cyclic ketones with a stabilized cyclic diazo compound partner is described. The approach towards spirocyclic scaffolds has been exemplified with readily available α-diazo-γ-butyrolactone. The reaction proved to be viable with BF3·OEt2 as the preferred catalyst and displayed substantial sensitivity to the size of the cyclic ketone. The experimental process involved the reaction of 3-Acetyldihydrofuran-2(3H)-one(cas: 517-23-7).Safety of 3-Acetyldihydrofuran-2(3H)-one

The Article related to spirocyclic ketolactone preparation lewis acid catalyst, cyclic ketone diazo butyrolactone buchner curtius schlotterbeck reaction, Heterocyclic Compounds (One Hetero Atom): Spiro Compounds With One Hetero Atom In Each Ring and other aspects.Safety of 3-Acetyldihydrofuran-2(3H)-one

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

On June 15, 2018, Shimada, Kousei; Ohata, Yasuo; Kobayashi, Jun; Onishi, Yoshiyuki; Kawamura, Asuka; Domon, Yuki; Arakawa, Naohisa; Inoue, Tatsuya; Kitano, Yutaka; Matsuda, Fumihiko; Abe, Yuki; Deguchi, Tsuneo published an article.Recommanded Product: (R)-Methyl 3-hydroxybutanoate The title of the article was Alkylsulfanyl analogs as potent α2δ ligands. And the article contained the following:

The authors identified novel (3R, 5S)-3-aminomethyl-5-methanesulfanyl hexanoic acid (5a: DS75091588) and (3R, 5S)-3-aminomethyl-5-ethanesulfanyl hexanoic acid (6a: DS18430756) as sulfur-containing γ-amino acid derivatives that were useful for the treatment of neuropathic pain. These two compounds exhibited a potent analgesic effect in animal models of both type I diabetes and type II diabetes, and good pharmacokinetics. The experimental process involved the reaction of (R)-Methyl 3-hydroxybutanoate(cas: 3976-69-0).Recommanded Product: (R)-Methyl 3-hydroxybutanoate

The Article related to alkylsulfanyl analog preparation alpha2delta calcium channel neuropathic pain analgesic, alkylsulfanyl, analgesic, diabetes, α(2)δ, γ-amino acid, Pharmacology: Effects Of Nervous System- and Behavior-Affecting Drugs and Neuromuscular Agents and other aspects.Recommanded Product: (R)-Methyl 3-hydroxybutanoate

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

On May 13, 1994, Kulagowski, Janusz J.; Baker, Raymond; Curtis, Neil R.; Mawer, Ian M.; Moseley, Angela M.; Ridgill, Mark P.; Rowley, Michael; Stansfield, Ian; Leeson, Paul D. published an article.HPLC of Formula: 142327-44-4 The title of the article was 3′-(Arylmethyl)- and 3′-(Aryloxy)-3-phenyl-4-hydroxyquinolin- 2(1H)-ones: Orally Active Antagonists of the Glycine Site on the NMDA Receptor. And the article contained the following:

Antagonists acting at the glycine site of the N-methyl-D-aspartate (NMDA) receptor are expected to have considerable therapeutic potential in a variety of disorders of the central nervous system. However in vivo studies with currently available compounds are severely compromised by the poor activities observed following systemic administration. The authors have previously followed a strategy of carboxyl replacement in known antagonists to provide 7-chloro-4-hydroxy-3-phenylquinolin-2(1H)-one (I). The authors now show that optimization of I by substitution of the 3-Ph with selected hydrophobic 3′-substituents yields a 100-fold improvement of in vitro affinity (IC50 values for displacement of [3H]L-689,560 binding and Kb values in cortical slice), combined with potent systemic anticonvulsant activity in the DBA/2 mouse audiogenic seizure model (ED50 values obtained after i.p. (i.p.) and oral (p.o.) administration). The following 3′-derivatives of I were identified: 3′-(4-methoxybenzyl)- (L-703,717), IC50 4.5 nM, Kb 25 nM, ED50 0.7 mg/kg i.p. and 0.9 mg/kg p.o.; 3′-(4-(1-methoxy)methoxybenzyl)- (L-708,541), IC50 2.2 nM, Kb 3.2 nM, ED50 0.5 mg/kg i.p. and 0.9 mg/kg p.o.; 3′-phenoxy- (L-701,324), IC50 2.8 nM, Kb 28 nM, ED50 0.9 mg/kg i.p. and 0.9 mg/kg p.o.; and 3′-(3-thienyloxy)- (L-705,022), IC50 1.4 nM, Kb 5.0 nM< ED50 0.8 mg/kg i.p. and 0.8 mg/kg p.o. These new glycine antagonists are the most potent yet described, both in vitro and in vivo, and are the first with oral activity. The experimental process involved the reaction of Methyl 2-(3-formylphenyl)acetate(cas: 142327-44-4).HPLC of Formula: 142327-44-4

The Article related to nmda receptor glycine site antagonist hydroxyphenylquinolone, anticonvulsant phenylhydroxyquinolone preparation, Pharmacology: Effects Of Nervous System- and Behavior-Affecting Drugs and Neuromuscular Agents and other aspects.HPLC of Formula: 142327-44-4

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