cas 6921-66-0, 4'-CHLORO-2'-HYDROXYACETOPHENONE

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Discovery of novel 3-{[(5,5-dimethyl-4,5-dihydroisoxazol-3-yl)sulfonyl]methyl}benzo[d]isoxazole analogs as promising very long chain fatty acids inhibitors
Very long chain fatty acids (VLCFAs) are one of the most principal and promising targets for herbicides discovery. In order to explore and find novel VLCFAs inhibitors with higher herbicidal activity and improved crop safety, a variety of new 3-{[(5,5-dimethyl-4,5-dihydroisoxazol-3-yl)sulfonyl]methyl}benzo[d]isoxazole derivatives were reasonably designed and synthesized. The results of greenhouse experiments indicated that several compounds exhibited good herbicidal activity against Digitaria sanguinalis, Echinochloa crus-galli, and Setaria faberii at rates of 150 g ai/ha. Compounds g4 and h1 displayed promising herbicidal activity against D sanguinalis and E crus-galli at rates of 75 g ai/ha, which is better than commercial pyroxasulfone and S-metolachlor. Moreover, compound h1 displayed higher activity against E crus-galli, D sanguinalis, and S faberii than pyroxasulfone and S-metolachlor even at a rate of 37.5 and 18.75 g ai/ha. Furthermore, both of the compounds g4 and h1 were much safer to these tested crops, especially to rice, wheat and rape, at the rate of 150 g ai/ha than pyroxasulfone. Therefore, h1 may act as a new lead structure for novel herbicides discovery.
Lin, Jian,Li, Yitao,Hu, Xiaoyun,Chi, Weilin,Zeng, Shuiming,Xu, Junxing
p. 226 - 240
(2020/10/19)

Rhoda-Electrocatalyzed Bimetallic C?H Oxygenation by Weak O-Coordination
Rhodium-electrocatalyzed arene C?H oxygenation by weakly O-coordinating amides and ketones have been established by bimetallic electrocatalysis. Likewise, diverse dihydrooxazinones were selectively accessed by the judicious choice of current, enabling twofold C?H functionalization. Detailed mechanistic studies by experiment, mass spectroscopy and cyclovoltammetric analysis provided support for an unprecedented electrooxidation-induced C?H activation by a bimetallic rhodium catalysis manifold.
Tan, Xuefeng,Massignan, Leonardo,Hou, Xiaoyan,Frey, Johanna,Oliveira, Jo?o C. A.,Hussain, Masoom Nasiha,Ackermann, Lutz
supporting information
p. 13264 - 13270
(2021/05/06)

Novel p-functionalized chromen-4-on-3-yl chalcones bearing astonishing boronic acid moiety as MDM2 inhibitor: Synthesis, cytotoxic evaluation and simulation studies
Background: Novel 4-[3-(6/7/8-Substituted 4-Oxo-4H-chromen-3-yl)acryloyl]phenyl-boronic acid derivatives (5a-h) as well as other 6/7/8-substituted-3-(3-oxo-3-(4-substituted-phenyl)prop-1-enyl)-4H-chromen-4-one derivatives (3a-u) have been designed as p53-MDM2 pathway inhibitors and reported to possess significant cytotoxic properties against several cancer cell lines. Objectives: The current project aims to frame the structure-anticancer activity relationship of chromen-4-on-3-yl chalcones (3a-u/5a-h). In addition, docking studies were performed on these chromeno-chalcones in order to have an insight into their interaction possibilities with MDM2 pro-tein. Methods: Twenty-nine chromen-4-on-3-yl chalcone derivatives (3a-u/5a-h) were prepared by utilizing silica supported-HClO4 (green route with magnificent yield) and tested against four cancer cell lines (HCT116, MCF-7, THP-1, NCIH322). Results: Among the series 3a-u, compound 3b exhibited the highest anticancer activity (with IC50 values ranging from 8.6 to 28.4 μM) overall against tested cancer cell lines. Interestingly, para-Boronic acid derivative (5b) showed selective inhibition against colon cancer cell line, HCT-116 with an IC50 value of 2.35 μM. Besides the emblematic hydrophobic interactions of MDM2 inhibi-tors, derivative 5b was found to exhibit extra hydrogen bonding with GLN59 and GLN72 residues of MDM2 in molecular dynamics (MD) simulation. All the compounds were virtually nontoxic against normal fibroblast cells. Conclusion: Novel compounds were obtained with good anticancer activity especially 6-Chlorochromen-4-one substituted boronic acid derivative 5b. The molecular docking study proposed good activity as a MDM-2 inhibitor suggesting hydrophobic as well as hydrogen bonding interactions with MDM2.
Bhatia, Richa Kaur,Coutinho, Evans C.,Garg, Ruchika,Kancherla, Satyavathi,Kaur, Maninder,Madan, Jitender,Pissurlenkar, Raghuvir R. S.,Singh, Lakhwinder,Yadav, Manmohan
p. 212 - 228
(2020/03/10)

TRANSCRIPTION FACTOR BRN2 INHIBITORY COMPOUNDS AS THERAPEUTICS AND METHODS FOR THEIR USE
The invention provides a variety of compounds having the structure of Formula I and uses of such compounds for treatment of various indications, including cancer as well as methods of treatment involving such compounds are also provided. The uses of the compounds may specifically include: bladder cancer, cholangiocarcinoma; colorectal cancer; diffuse large B-cell lymphoma (DLBC); liver cancer; ovarian cancer; thymoma; thyroid cancer; clear cell renal cell carcinoma (CCRCC); chromophobe renal cell carcinoma (ChRCC); prostate cancer; breast cancer; uterine cancer; pancreatic cancer; cervical cancer; uveal melanoma; acute myeloid leukemia (AML); head and neck cancer; small cell lung cancer (SCLC); lung adenocarcinoma sarcoma; mesothelioma; adenoid cystic carcinoma (ACC), sarcoma; testicular germ cell cancer; uterine cancer; pheochromocytoma and paraganglioma (PCPG); melanoma; glioma; glioblastoma multiforme; T-cell Acute Lymphoblastic Leukemia; T-cell Lympohoma, medulloblastoma; and neuroblastoma.
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(2020/05/15)

Directed Hydroxylation of sp2 and sp3 C-H Bonds Using Stoichiometric Amounts of Cu and H2O2
The use of copper for C-H bond functionalization, compared to other metals, is relatively unexplored. Herein, we report a synthetic protocol for the regioselective hydroxylation of sp2 and sp3 C-H bonds using a directing group, stoichiometric amounts of Cu and H2O2. A wide array of aromatic ketones and aldehydes are oxidized in the carbonyl γ-position with remarkable yields. We also expanded this methodology to hydroxylate the β-position of alkylic ketones. Spectroscopic characterization, kinetics, and density functional theory calculations point toward the involvement of a mononuclear LCuII(OOH) species, which oxidizes the aromatic sp2 C-H bonds via a concerted heterolytic O-O bond cleavage with concomitant electrophilic attack on the arene system.
Trammell, Rachel,D'Amore, Lorenzo,Cordova, Alexandra,Polunin, Pavel,Xie, Nan,Siegler, Maxime A.,Belanzoni, Paola,Swart, Marcel,Garcia-Bosch, Isaac
p. 7584 - 7592
(2019/06/11)

Gram-Positive and Gram-Negative Antibiotic Activity of Asymmetric and Monomeric Robenidine Analogues
Desymmetrisation of robenidine (1: N′,2-bis((E)-4-chlorobenzylidene)hydrazine-1-carboximidhydrazide) and the introduction of imine alkyl substituents gave good antibiotic activity. Of note was the increased potency of two analogues against vancomycin-resistant Enterococci (VRE), one of which returned a MIC of 0.5 μg mL?1. Five analogues were found to be equipotent or more potent than the lead 1. Introduction of an indole moiety resulted in the most active robenidine analogue against methicillin-resistant S. aureus (MRSA), with a MIC of 1.0 μg mL?1. Imine C=NH isosteres (C=O/C=S) were inactive. Monomeric analogues were 16–64 μg mL?1 active against MRSA and VRE. An analogue that lacks the terminal hydrazide NH moiety showed modest Gram-negative activity at 64 μg mL?1. A 4-tert-butyl analogue was shown to be active against both Gram-positive and -negative strains at 16–64 μg mL?1. In general, additional modifications with aromatic moieties was poorly tolerated, except with concomitant introduction of an imine C-alkyl group. The activity of these analogues against MRSA and VRE ranged from 8 μg mL?1 to inactive (MIC>128 μg mL?1) with the naphthyl and indole analogues. Gram-negative activity was most promising with two compounds at 16 μg mL?1 against E. coli. Against P. aeruginosa, the highest activity observed was with MIC values of 32 μg mL?1 with another two analogues. Combined, these findings support the further development of the (E)-2-benzylidenehydrazine-1-carboximidamide scaffold as a promising scaffold for the development of antibiotics against Gram-positive and Gram-negative strains.
Russell, Cecilia C.,Stevens, Andrew,Pi, Hongfei,Khazandi, Manouchehr,Ogunniyi, Abiodun D.,Young, Kelly A.,Baker, Jennifer R.,McCluskey, Siobhann N.,Page, Stephen W.,Trott, Darren J.,McCluskey, Adam
supporting information
p. 2573 - 2580
(2018/11/27)

A re-investigation of the Fries rearrangement of 3-chlorophenyl acetate and synthesis of 2-azido-1-(4-(benzyloxy)-2-chlorophenyl)ethanone from 4-bromo-3-chlorophenol
The Fries rearrangement of 3-chlorophenyl acetate provided the expected 4-chloro-2-hydroxy-acetophenone as the major product and 2,4-diacetyl resorcinol and 2-chloro-4-hydroxy-acetophenone as minor products. 4-Benzyloxy-2-chloroacetophenone was prepared by a Heck reaction and then elaborated to 4-benzyloxy-2-chlorophenacyl azide.
Procopiou, Panayiotis A.,Coe, Diane M.,Procopiou, George
p. 4766 - 4768
(2017/11/20)

Photocatalytic benzene and benzene derivative direct hydroxylation or amination method
The invention discloses a photocatalytic benzene and benzene derivative direct hydroxylation or amination method. The method is characterized by comprising the following steps: (1) adding a photo-sensitizer and a cobalt catalyst into a solvent to obtain a solution (A); (2) adding benzene (or benzene derivatives), water, ammonia gas, and amide derivatives (or sulfonamide derivatives) into the solution (A) to obtain a solution (B); and (3) in a N2 (or Ar) environment, radiating the solution (B) by a medium pressure mercury lamp, a high pressure mercury lamp, a xenon lamp, or an LED lamp to obtain phenols or amines and H2. For the first time, a photo-sensitizer and a cobalt catalyst are combined and applied to photocatalytic hydroxylation and amination of benzene. The conditions of the method are mild, light is taken as the driving energy, no oxidant is added, the only byproduct is H2, and the whole process is green, concise, and efficient. High selective benzene one-step hydroxylation to generate phenol or high selective phenol/benzene one-step amination to generate aniline is realized, and the method can be applied to the production of phenol and aniline.
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Paragraph 0128-0129

(2017/11/29)

3-Formylchromone based topoisomerase IIα inhibitors: Discovery of potent leads
Substituted 3-formylchromones were synthesized and evaluated as inhibitors of the human DNA topoisomerase IIα (hTopo-IIα) enzyme. The results of the decatenation, relaxation and DNA intercalation assays revealed that the compounds (11b, 12a, 12b, 12d, 12e, 13a and 13b) exhibited potent inhibitory activity against the hTopo-IIα enzyme, and are nonintercalating agents. These compounds also possess significant in vitro cytotoxicity (LC50 ranges from 0.5-8.6 μM) against prostate (PC-3) cancerous cell line as seen in comparison to the standard drug etoposide. To further probe the plausible mode of action of 3-formylchromone derivatives, molecular docking studies have also been carried out, which showed that the compounds under investigation fitted well in the ATP binding pocket of hTopo-IIα enzyme with good docking scores and form nonbonding interactions with the crucial residues of the catalytic site. The Royal Society of Chemistry.
Singh, Satyajit,Baviskar, Ashish Triambak,Jain, Vaibhav,Mishra, Nidhi,Chand Banerjee, Uttam,Bharatam, Prasad V.,Tikoo, Kulbhushan,Singh Ishar, Mohan Paul
p. 1257 - 1266
(2013/09/12)

Chromenones as potent bradykinin B1 antagonists
A series of fused 6,6-bicyclic chromenones was investigated for activity against the bradykinin B1 receptor. SAR studies based on a pharmacophore model revealed compounds with high affinity for both human and rabbit B1. These compounds demonstrated favorable pharmacokinetic properties and 5-chlorochromenone 15 was efficacious in a carrageenan-induced mechanical hyperalgesia model for chronic pain.
Bryan, Marian C.,Biswas, Kaustav,Peterkin, Tanya A.N.,Rzasa, Robert M.,Arik, Leyla,Lehto, Sonya G.,Sun, Hong,Hsieh, Feng-Yin,Xu, Cen,Fremeau, Robert T.,Allen, Jennifer R.
p. 619 - 622
(2012/02/04)

Identification of anthranilic acid derivatives as a novel class of allosteric inhibitors of hepatitis C NS5B polymerase
A series of potent anthranilic acid-based inhibitors of the hepatitis C NS5B polymerase has been identified. The inhibitors bind to a site on NS5B between the thumb and palm regions adjacent to the active site as determined by X-ray crystallography of the enzyme-inhibitor complex. Guided by both molecular modeling and traditional SAR, the enzyme activity of the initial hit was improved by approximately 100-fold, yielding a series of potent and selective NS5B inhibitors with IC50 values as low as 10 nM. These compounds were also inhibitors of the HCV replicon in cultured HUH7 cells.
Nittoli, Thomas,Curran, Kevin,Insaf, Shabana,DiGrandi, Martin,Orlowski, Mark,Chopra, Rajiv,Agarwal, Atul,Howe, Anita Y. M.,Prashad, Amar,Floyd, M. Brawner,Johnson, Bernard,Sutherland, Alan,Wheless, Karen,Feld, Boris,O'Connell, John,Mansour, Tarek S.,Bloom, Jonathan
p. 2108 - 2116
(2008/02/06)

Optimization of chromone-2-carboxamide melanin concentrating hormone receptor 1 antagonists: Assessment of potency, efficacy, and cardiovascular safety
Evaluation of multiple structurally distinct series of melanin concentrating hormone receptor 1 antagonists in an anesthetized rat cardiovascualar assay led to the identification of a chromone-2-carboxamide series as having excellent safety against the chosen cardiovascular endpoints at high drug concentrations in the plasma and brain. Optimization of this series led to considerable improvements in affinity, functional potency, and pharmacokinetic profile. This led to the identification of a 7-fluorochromone-2-carboxamide (22) that was orally efficacious in a diet-induced obese mouse model, retained a favorable cardiovascular profile in rat, and demonstrated dramatic improvement in effects on mean arterial pressure in our dog cardiovascular model compared to other series reported by our group. However, this analogue also led to prolongation of the QT interval in the dog that was linked to affinity for hERG channel and unexpectedly potent functional blockade of this ion channel.
Lynch, John K.,Freeman, Jennifer C.,Judd, Andrew S.,Iyengar, Rajesh,Mulhern, Mathew,Zhao, Gang,Napier, James J.,Wodka, Dariusz,Brodjian, Sevan,Dayton, Brian D.,Falls, Doug,Ogiela, Christopher,Reilly, Regina M.,Campbell, Thomas J.,Polakowski, James S.,Hernandez, Lisa,Marsh, Kennan C.,Shapiro, Robin,Knourek-Segel, Victoria,Droz, Brian,Bush, Eugene,Brune, Michael,Preusser, Lee C.,Fryer, Ryan M.,Reinhart, Glenn A.,Houseman, Kathryn,Diaz, Gilbert,Mikhail, Ann,Limberis, James T.,Sham, Hing L.,Collins, Christine A.,Kym, Philip R.
p. 6569 - 6584
(2007/10/03)

BENZOPYRAN DERIVATIVES, METHOD OF PRODUCTION AND USE THEREOF
The invention relates to novel benzopyran derivatives of formula (I), to their method of production, to composition comprising the derivatives and use thereof. Formula (I) wherein: R1, R2, R3 and R4 are independ
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Page/Page column 40

(2008/06/13)

QSAR studies of paeonol analogues for inhibition of platelet aggregation
Various paeonol analogues were synthesized and tested in vitro as inhibitors of platelet aggregation. Structural properties (or descriptors) of paeonol analogues were calculated and the structure-activity relationships were determined. Several multiple linear and nonlinear regression models and back-propagation neural network model were tested and the latter using relative positive charge, hydration energy, and hydrophilic factor as inputs gave the best data fitting with R2 = 0.89 and qpre2=0.66. The correlation coefficient between antiplatelet inhibition activity with an interaction energy between the paeonol compounds with COX-1 enzyme is only 0.39.
Doble, Mukesh,Karthikeyan,Padmaswar,Akamanchi
p. 5996 - 6001
(2007/10/03)

Substituted 1,3-diphenylprop-2-en-1-one derivatives and preparation and uses thereof
The invention concerns novel substituted 1,3-diphenylprop-2-en-1-one derivatives, pharmaceutical compositions comprising same, their therapeutic uses, in particular for treating cerebral ischemia. The invention also concerns a method for preparing said derivatives.
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Page/Page column 16

(2008/06/13)

Composition based on substituted 1,3-diphenylprop-2-en-1-one derivatives, preparation and uses thereof
The invention concerns compositions comprising substituted 1,3-diphenylprop-2-en-1-one derivatives designed for therapeutic use. The inventive compositions are useful in particular for preventing or treating cardiovascular diseases, syndrome X, la restenosis, diabetes, obesity, hypertension, inflammatory diseases, cancers or neoplasms (benign or malignant tumors), neurodegenerative, dermatological diseases and disorders related to oxidative stress, for preventing or treating the effects of ageing in general and for example skin ageing, in particular in the field of cosmetics (occurrence of wrinkles and the like).
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Page/Page column 16

(2008/06/13)

Antagonists of melanin concentrating hormone effects on the melanin concentrating hormone receptor
The present invention is directed to compounds of formula (I), which antagonize of the effects of melanin-concentrating hormone (MCH) through the melanin concentrating hormone receptor which is useful for the prevention or treatment of eating disorders, weight gain, obesity, abnormalities in reproduction and sexual behavior, thyroid hormone secretion, diuresis and water/electrolyte homeostasis, sensory processing, memory, sleeping, arousal, anxiety, depression, seizures, neurodegeneration and psychiatric disorders.
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Page/Page column 21

(2010/02/14)

ENDOTHELIN RECEPTOR ANTAGONISTS
Novel pyrroles, pyrazoles and triazoles, pharmaceutical compositions containing these compounds and their use as endothelin receptor antagonists are described.
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Page column 22

(2008/06/13)

Synthesis and in-vitro evaluation of platelet aggregation inhibitory activity of paeonol and its analogues
Paeonol (1-(2-hydroxy-4-methoxyphenyl)ethanone) and a series of substituted 1-(2-hydroxyphenyl)ethanone derivatives were synthesized and screened as inhibitors of platelet aggregation. The compounds with the greatest anti-platelet potential among the series tested were 1-(2,5-dihydroxyphenyl)ethanone (65.36% inhibition at 300 μM against 5 μM ADP), paeonol(36.31%), 1-(2-hydroxy-5-methoxyphenyl)ethanone (24.47%), 1-(2-hydroxy-5-nitrophenyl) ethanone (30.40%) and 1-(5-chloro-2-hydroxy-4-methylphenyl)ethanone (24.43%).
Akamanchi,Padmawar,Thatte,Rege,Dahanukar
p. 323 - 329
(2007/10/03)

ENDOTHELIN RECEPTOR ANTAGONISTS
Novel pyrroles, pyrazoles and triazoles, pharmaceutical compositions containing these compounds and their use as endothelin receptor antagonists are described.
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(2008/06/13)

Therapeutic agents useful for treating inflammatory diseases
This invention relates to compounds of formula I and pharmaceutically acceptable salts thereof STR1 in which R1, R2 and R3 independently represent hydrogen, halo, alkyl, alkoxy, phenoxy, phenyl, alkoxycarbonyl, --NR13 R14, halogenated alkoxy, halogenated alkyl, benzyloxy, hydroxy, hydroxyalkyl, (C2-6 alkoxycarbonyl)vinyl, --S(O)n R7, carbamoylalkyl, alkoxycarbonylalkyl, --CONR11 R12, or R1 and R2 together with the phenyl ring represent a naphthyl group; R4 and R5 independently represent hydrogen, alkyl, phenyl or together with the carbon atom represent C3-6 cycloalkyl; R6 represents hydrogen, alkyl or ω-hydroxy alkyl; A represents C2-9 alkylene; R8 represents hydrogen, alkyl, halo, alkoxy, hydroxyalkyl, benzyl or phenyl; R9 and R10 independently represent hydrogen, alkyl, halo, alkoxy, phenyl, hydroxyalkyl, alkoxycarbonyl, nitro, --NR30 R31, alkanoyloxyalkyl, or aminomethyl; which are antiinflammatory and antiallergic agents. Compositions containing these compounds and processes to make them are also disclosed.
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(2008/06/13)

OXYGENATION OF SUBSTITUTED 2'-HYDROXYACETOPHENONE 4-BROMOPHENYLHYDRAZONES PROMOTED BY COBALT(II) SCHIFF BASE COMPLEX
Substituted 2'-hydroxyacetophenone 4-bromophenylhydrazones are oxygenated readily in the presence of Co(Salpr) in ethanol to give 2-(4-bromophenylazo)-1,3-benzodioxoles in good yield.The results are rationalized in terms of the decomposition of a peroxy cobalt(III) complex intermediate by a mechanism similar to the Darkin oxidation.
Nishinaga, Akira,Yamazaki, Shigekazu,Matsuura, Teruo
p. 5805 - 5808
(2007/10/02)

Infrared study of polysubstitution effects in benzophenones and acetophenones: contribution of inter and intracycle interaction mechanisms
The carbonyl stretching frequencies of substituted 2-Me, 2,6-diMe, 2-MeO benzophenones and 2-Me, 2-MeO acetophenones have been measured in diluted CCl4 solutions.Two interaction mechanisms are observed.In X, Y substituted benzophenones with X on the same cycle as the ortho group and Y on the other cycle, it is shown that for X=Y, the effect of Y is greater than that of X except for very strong electron-releasing substituents.In this last case, the observed enhancement is attributed to the joint effects of intercycle interactions excercised on X and Y and of intracycle interaction on X.These results are corroborated by the study of substituted acetophenones in which only the intracycle mechanism can play a role.
Goethals, G.,Nadio, L.,Uzan, R.
p. 199 - 204
(2007/10/02)