6272-38-4Relevant articles and documents
Access to Diarylmethanols by Wittig Rearrangement of ortho-, meta-, and para-Benzyloxy- N-Butylbenzamides
Aitken, R. Alan,Harper, Andrew D.,Inwood, Ryan A.,Slawin, Alexandra M. Z.
supporting information, p. 4692 - 4701 (2022/04/07)
The N-butyl amide group, CONHBu, has been found to be an effective promoter of the [1,2]-Wittig rearrangement of aryl benzyl ethers and thus allow the two-step synthesis of isomerically pure substituted diarylmethanols starting from simple hydroxybenzoic acid derivatives. The method is compatible with a wide range of functional groups including methyl, methoxy, and fluoro, although not with nitro and, unexpectedly, is applicable to meta as well as ortho and para isomeric series.
1,3 DI-SUBSTITUTED CYCLOBUTANE OR AZETIDINE DERIVATIVES AS HEMATOPOIETIC PROSTAGLANDIN D SYNTHASE INHIBITORS
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Page/Page column 227, (2018/04/27)
A compound of formula (I), wherein R, R1, R2, R3, Y, Y1, a, X, and Z are as defined herein. The compounds of the present invention are inhibitors of hematopoietic prostaglandin D synthase (H-PGDS) and can be useful in the treatment of Duchenne Muscular Dystrophy. Accordingly, the invention is further directed to pharmaceutical compositions comprising a compound of the invention. The invention is still further directed to methods of inhibiting H-PGDS activity and treatment of disorders associated therewith using a compound of the invention or a pharmaceutical composition comprising a compound of the invention.
Enantioselective synthesis, stereochemical correction, and biological investigation of the rodgersinine family of 1,4-benzodioxane neolignans
Pilkington, Lisa I.,Barker, David,Wagoner, Jessica,Polyak, Stephen J.
supporting information, p. 1046 - 1049 (2015/03/30)
The enantioselective synthesis and chiroptic analysis of all members of the rodgersinine family of 1,4-benzodioxane neolignans has been achieved. ECD spectra and optical rotation analysis determined that the previously published stereochemistry of trans-rodgersinines A and B was incorrect. The cis-rodgersinines A and B did not follow the model ECD study commonly used to assign the absolute stereochemistry of 1,4-benzodioxane natural products. This finding has implications on the absolute stereochemistry of other natural products of this type. Additionally, the rodgersinines were found to have anti-HCV activities.
A study towards the regioselective synthesis of the e,e,e trisadduct of C60 via the [4+2] Diels-Alder reaction with tethers bearing orthoquinodimethane precursors
Ioannou, Charalambos P.,Chronakis, Nikos
, p. 65 - 82 (2015/04/21)
The regioselective synthesis of an e,e,e trisadduct of C60 via the Diels-Alder reaction with orthoquinodimethanes has been attempted employing the tether-directed remote functionalization approach. Opened-structure tether 10 and macrocyclic tethers 16 and 21 were synthesized for this purpose. The functionalization of C60 afforded inseparable mixtures of regiomeric trisadducts and the regioselective formation of the e,e,e trisadduct was not feasible even when the more preorganized tethers 16 and 21 were employed. The in situ thermal generation of orthoquinodimethanes from the 1,2-bis(bromomethyl)benzene precursors requires high temperatures and is followed by fast, irreversible cycloaddition with C60 to afford thermally stable products, which prevents the achievement of high regioselectivities.
Choline chloride based deep eutectic solvent as an efficient solvent for the benzylation of phenols
Singh, Abhilash S.,Shendage, Suresh S.,Nagarkar, Jayashree M.
, p. 7243 - 7246 (2015/02/02)
Deep eutectic solvents (such as the combination of urea and choline chloride) are found to be promising solvent and phase-transfer-media for benzylation of phenol. These methods avoided the complexity of multiple alkylations giving selectively O-alkylated aromatic products. Good to excellent yields of the corresponding benzyl phenyl ether were obtained. The non-toxic, biodegradable, inexpensive, and recyclable nature of DES make this protocol green and cost-effective.
Synthesis of 1,7-dimethoxy-2-hydroxyxanthone, a natural product with potential activity on erectile dysfunction
Liu, Wen-Jing,Mei, De-Sheng,Duan, Wen-Hu
, p. 515 - 517 (2013/07/27)
The natural product, 1,7-dimethoxy-2-hydroxyxanthone (1), isolated from Securidaca inappendiculate Hassk, has a potential in the treatment of erectile dysfunction due to its significant relaxation activity on rabbit Corpus cavernosum. However, the isolation of compound 1 is problematic because of its high similarity in structure to its analogs. In this paper, the first synthesis of 1 was reported featuring two key reactions: a copper-catalyzed coupling reaction and an intramolecular cyclization.
Syntheses and characterization of nimesulide derivatives for dual enzyme inhibitors of both cyclooxygenase-1/2 and 5-lipoxygenase
Li, Yue,Chen, Shu-Han,Ou, Tian-Miao,Tan, Jia-Heng,Li, Ding,Gu, Lian-Quan,Huang, Zhi-Shu
scheme or table, p. 2074 - 2083 (2011/05/05)
Cyclooxygenase-1/2 (COX-1/2) and 5-lipoxygenase (5-LOX) are enzymes in two different pathways in the inflammatory process. In the present study, a variety of new nimesulide derivatives were synthesized through incorporation of a 5-LOX pharmacophore into nimesulide followed with some structural modifications, which were then characterized for dual enzyme inhibitors for these two types of enzymes. Their structure-activity relationships (SARs) were studied, and compound 20f was found to be an excellent dual enzyme inhibitor. Its binding conformation and interaction mode were studied with molecular docking experiments. Compound 20f could become a lead compound for further development for potential anti-inflammatory drugs.
[Pd(L)Cl2]-catalyzed selective hydroxylation of arylboronic acids to phenols
Chowdhury, Abhishek Dutta,Mobin, Shaikh M.,Mukherjee, Soumen,Bhaduri, Sumit,Lahiri, Goutam Kumar
experimental part, p. 3232 - 3239 (2011/08/07)
The palladium complex [Pd(L)Cl2] (1) has been prepared by the reaction of Pd(COD)Cl2 (COD = 1,5-cyclooctadiene) with L [N,N′-bis(diphenylphosphanyl)-2-(diphenylphosphanyl)ethanamine]. The ligand L and complex 1 have been characterized by elemental analysis, mass spectrometry and 1H/31P NMR spectroscopy. In the presence of O2, 1 selectively catalyzes the hydroxylation of a variety of arylboronic acids to the corresponding phenol derivatives in solvents with low-dielectric constants at 298 K, although in solvents with high dielectric constants the same reaction leads to the formation of both phenol and the coupled product, i.e. biaryl. The mechanistic aspects of the selective phenol formation from arylboronic acid with 1 have been addressed.
COMPOUNDS WITH 7-MEMBER CYCLE AND THE PHARMACEUTICAL USE THEREOF FOR PREVENTING AND TREATING DIABETES AND METABOLISM SYNDROME
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Page/Page column 31, (2010/07/06)
The invention discloses a new use of a class of heptacyclic compounds in the preparation of formulations for the prevention and treatment of diabetes and metabolic syndromes; the present invention also discloses a new class of heptacyclic compounds; the present invention also discloses a process for preparing the heptacyclic compounds and a composition containing the same. The heptacyclic compounds of the present invention can be used to effectively preventing or treating diseases such as diabetes and metabolic syndromes.
Synthesis of ranolazine metabolites and their anti-myocardial ischemia activities
Yao, Zhangyu,Gong, Shubo,Guan, Teng,Li, Yunman,Wu, Xiaoming,Sun, Hongbin
experimental part, p. 1218 - 1222 (2010/06/16)
The anti-anginal drug Ranolazine, a partial fatty acid oxidation (pFOX) inhibitor, is thought to modulate the metabolism during myocardial ischemia by activating pyruvate dehydrogenase activity to promote glucose oxidation. Ranolazine and its five principal metabolites: CVT-2512, CVT-2513, CVT-2514, CVT-2738 and CVT-4786, were synthesized. The effect of Ranolazine and its metabolites on the ECG (electrocardiogram) of mice with myocardial ischemia induced by isoprenaline and their effect on alleviating the symptom of myocardial ischemia were tested and compared. The results showed that CVT-2738 and CVT-2513 could be protective against mice myocardial ischemia induced by isoprenaline. Within all the metabolites tested in this study, CVT-2738 exhibited the best potency, however, it was still less potent than Ranolazine.