- Nickel-Catalyzed Decarboxylative Cross-Coupling of Bicyclo[1.1.1]pentyl Radicals Enabled by Electron Donor-Acceptor Complex Photoactivation
-
The use of bicyclo[1.1.1]pentanes (BCPs) as para-disubstituted aryl bioisosteres has gained considerable momentum in drug development programs. Carbon-carbon bond formation via transition-metal-mediated cross-coupling represents an attractive strategy to generate BCP-aryl compounds for late-stage functionalization, but these typically require reactive organometallics to prepare BCP nucleophiles on demand from [1.1.1]propellane. In this study, the synthesis and Ni-catalyzed functionalization of BCP redox-active esters with (hetero)aryl bromides via the action of a photoactive electron donor-acceptor complex are reported.
- Polites, Viktor C.,Badir, Shorouk O.,Keess, Sebastian,Jolit, Anais,Molander, Gary A.
-
supporting information
p. 4828 - 4833
(2021/06/30)
-
- Photochemical C-H Activation Enables Nickel-Catalyzed Olefin Dicarbofunctionalization
-
Alkenes, ethers, and alcohols account for a significant percentage of bulk reagents available to the chemistry community. The petrochemical, pharmaceutical, and agrochemical industries each consume gigagrams of these materials as fuels and solvents each year. However, the utilization of such materials as building blocks for the construction of complex small molecules is limited by the necessity of prefunctionalization to achieve chemoselective reactivity. Herein, we report the implementation of efficient, sustainable, diaryl ketone hydrogen-atom transfer (HAT) catalysis to activate native C-H bonds for multicomponent dicarbofunctionalization of alkenes. The ability to forge new carbon-carbon bonds between reagents typically viewed as commodity solvents provides a new, more atom-economic outlook for organic synthesis. Through detailed experimental and computational investigation, the critical effect of hydrogen bonding on the reactivity of this transformation was uncovered.
- Campbell, Mark W.,Yuan, Mingbin,Polites, Viktor C.,Gutierrez, Osvaldo,Molander, Gary A.
-
supporting information
p. 3901 - 3910
(2021/04/06)
-
- S(vi) in three-component sulfonamide synthesis: Use of sulfuric chloride as a linchpin in palladium-catalyzed Suzuki-Miyaura coupling
-
Sulfuric chloride is used as the source of the -SO2- group in a palladium-catalyzed three-component synthesis of sulfonamides. Suzuki-Miyaura coupling between the in situ generated sulfamoyl chlorides and boronic acids gives rise to diverse sulfonamides in moderate to high yields with excellent reaction selectivity. Although this transformation is not workable for primary amines or anilines, the results show high functional group tolerance. With the solving of the desulfonylation problem and utilization of cheap and easily accessible sulfuric chloride as the source of sulfur dioxide, redox-neutral three-component synthesis of sulfonamides is first achieved. This journal is
- Wang, Xuefeng,Yang, Min,Ye, Shengqing,Kuang, Yunyan,Wu, Jie
-
p. 6437 - 6441
(2021/05/19)
-
- Synthesis method of sulfonyl secondary amine compound
-
The invention belongs to the technical field of organic chemistry, and particularly relates to a preparation method of a sulfonyl secondary amine compound. The structure of the compound is characterized by 1H NMR, 13C NMR and HRMS and is confirmed. According to the method, acetonitrile and tetrahydrofuran are used as a mixed solvent, corresponding secondary amine, sulfonyl chloride and boric acid react under the heating condition in the presence of a palladium catalyst, a ligand and alkali, the secondary amine and the sulfonyl chloride firstly generate corresponding amino sulfonyl chloride, and then the amino sulfonyl chloride and the boric acid are subjected to a palladium-catalyzed Suzuki-Miyaura coupling reaction to obtain the target sulfonyl secondary amine compound. The preparation method of the compound has the advantages that corresponding sulfonyl chloride is prevented from being prepared in advance, meanwhile, the conditions are mild, the compatibility of functional groups is high, separation and purification are convenient, and good application value is achieved.
- -
-
Paragraph 0037-0041
(2021/04/21)
-
- AEROBIC OXIDATIVE SYNTHESIS OF SULFONAMIDE USING Cu CATALYST
-
The present invention relates to a method for oxidative synthesis of sulfonamides using copper catalysts. , Oxygen (O) is used. 2 The oxidative synthesis of sulfonamides (1) comprises reacting a 2 th or sulfonyl hydrazide primary amine with a sulfonyl hydrazide (sulfonamide) with a copper catalyst on a solvent under the conditions in which the sulphonamide is fed. The oxidation coupling of the present invention showed extensive substrate ranges in an amine comprising a 2 primary amine, 1 primary amine and amine hydrochloride salt. It is worth notable that non-reactive aliphatic sulfonyl hydrazides in previously reported anaerobic systems can be used for the aerobic oxidation coupling of the present invention. The oxidation coupling of the present invention has been more effective on large scale.
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-
Paragraph 0033-0037; 0039-0054; 0066-0069; 0151-0152
(2021/04/06)
-
- COMPOUND USED AS AUTOPHAGY REGULATOR, AND PREPARATION METHOD THEREFOR AND USES THEREOF
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It is related to compounds used as autophagy modulators and a method for preparing and using the same, specifically providing a compound of general formula (I), or pharmaceutically acceptable salts thereof, which is a type of autophagy modulators, particularly mammalian ATG8 homologues modulators.
- -
-
Paragraph 0297-0298
(2020/07/07)
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- Cu-catalyzed aerobic oxidative synthesis of sulfonamides from sulfonyl hydrazides and amines
-
An environmentally friendly route for sulfonamides has been developed. The oxidative coupling of sulfonyl hydrazides and amines was catalyzed by CuBr2 to produce various sulfonamides with the water and nitrogen gas as byproducts. Preliminary experiments revealed that the sulfonyl radical is likely to be involved in the reaction mechanism.
- Chung, Sohyun,Kim, Jinho
-
supporting information
p. 792 - 795
(2019/02/16)
-
- CATHEPSIN K INHIBITOR AND APPLICATION THEREOF
-
The invention relates to capthepsin K inhibitors and uses thereof, specifically relates to a class of compounds having the formula (I) which are used for treating or preventing cathepsin dependent diseases or conditions, specifically, wherein the cathepsin is capthepsin K. The compounds and compositions thereof can be used as bone resorption inhibitors for the treatment of associated diseases.
- -
-
Paragraph 0393
(2018/07/29)
-
- Synthesis of aromatic sulfonamides through a copper-catalyzed coupling of aryldiazonium tetrafluoroborates, DABCO·(SO2)2, and N-Chloroamines
-
A copper-catalyzed aminosulfonylation of aryldiazonium tetrafluoroborates, DABCO·(SO2)2, and N-chloroamines is described. This coupling reaction provides an efficient and simple approach to a wide range of sulfonamides in moderate to good yields under mild conditions. Mechanistic investigation suggests that a radical process and transition-metal catalysis are merged in this tandem reaction.
- Zhang, Feng,Zheng, Danqing,Lai, Lifang,Cheng, Jiang,Sun, Jiangtao,Wu, Jie
-
supporting information
p. 1167 - 1170
(2018/02/23)
-
- Antiparasitic Lead Discovery: Toward Optimization of a Chemotype with Activity Against Multiple Protozoan Parasites
-
Human African trypanosomiasis (HAT), Chagas disease, and leishmaniasis present a significant burden across the developing world. Existing therapeutics for these protozoal neglected tropical diseases suffer from severe side effects and toxicity. Previously
- Devine, William,Thomas, Sarah M.,Erath, Jessey,Bachovchin, Kelly A.,Lee, Patricia J.,Leed, Susan E.,Rodriguez, Ana,Sciotti, Richard J.,Mensa-Wilmot, Kojo,Pollastri, Michael P.
-
supporting information
p. 350 - 354
(2017/03/17)
-
- Metal-free I2O5-mediated direct construction of sulfonamides from thiols and amines
-
A simple and convenient method has been developed for the construction of sulfonamides via I2O5-mediated sulfonylation of amines with arylthiols. The present protocol provides an attractive approach to sulfonamides in moderate to good yields from readily accessible and easy to handle starting materials under mild and metal-free conditions.
- Zhu, Minghui,Wei, Wei,Yang, Daoshan,Cui, Huanhuan,Wang, Leilei,Meng, Guoqing,Wang, Hua
-
supporting information
p. 4789 - 4793
(2017/07/10)
-
- Preparation method of sulfonamides compound
-
The invention discloses a reparation method of a sulfonamides compound. The preparation method includes: using thiophenol and amine which are simple and easy to get as raw materials; enabling the raw materials to be in direct oxidation coupling reaction under mediation of safe and stable iodine pentoxide to prepare sulfonamide. The preparation method has the advantages that reaction conditions are mild (60 DEG C), the raw materials are simple and easy to get and low in price, reaction environment is friendly, a substrate is wide in application range, and metal catalysts and harsh reaction conditions like low or high temperature and zero water and zero oxygen are not needed, so that metal pollution related to common synthesis methods is avoided; the preparation method further has the advantages of simple, convenient and safe operation, stable process condition and easiness in product purification and is suitable for large-scale production.
- -
-
Paragraph 0027; 0028
(2017/09/02)
-
- Metal-free synthesis of sulfonamides via iodine-catalyzed oxidative coupling of sulfonyl hydrazides and amines
-
A novel, rapid, and environmentally-friendly protocol for the synthesis of sulfonamides using iodine as catalyst under solvent-free conditions is described. This method involves the oxidative coupling of sulfonyl hydrazides and amines in the presence of catalytic amount of iodine using TBHP as oxidant. This protocol does not require purification techniques such as column chromatography and recrystalization.
- Parumala, Santosh Kumar Reddy,Peddinti, Rama Krishna
-
supporting information
p. 1232 - 1235
(2016/03/01)
-
- Electrochemical synthesis of sulfonamides from arenesulfonohydrazides or sodium p-methylbenzenesulfinate and amines
-
An efficient electrochemical synthesis of sulfonamides (yields 56–98%) from arenesulfonohydrazides or sodium p-methylbenzenesulfinate and amines was performed in an undivided cell with graphite anode and iron cathode in MeCN–H2O medium using halides as redox mediators and supporting electrolytes.
- Terent'ev, Alexander O.,Mulina, Olga M.,Pirgach, Dmitry A.,Syroeshkin, Mikhail A.,Glinushkin, Alexey P.,Nikishin, Gennady I.
-
p. 538 - 539
(2016/12/02)
-
- Protozoan Parasite Growth Inhibitors Discovered by Cross-Screening Yield Potent Scaffolds for Lead Discovery
-
Tropical protozoal infections are a significant cause of morbidity and mortality worldwide; four in particular (human African trypanosomiasis (HAT), Chagas disease, cutaneous leishmaniasis, and malaria) have an estimated combined burden of over 87 million disability-adjusted life years. New drugs are needed for each of these diseases. Building on the previous identification of NEU-617 (1) as a potent and nontoxic inhibitor of proliferation for the HAT pathogen (Trypanosoma brucei), we have now tested this class of analogs against other protozoal species: T. cruzi (Chagas disease), Leishmania major (cutaneous leishmaniasis), and Plasmodium falciparum (malaria). Based on hits identified in this screening campaign, we describe the preparation of several replacements for the quinazoline scaffold and report these inhibitors' biological activities against these parasites. In doing this, we have identified several potent proliferation inhibitors for each pathogen, such as 4-((3-chloro-4-((3-fluorobenzyl)oxy)phenyl)amino)-6-(4-((4-methyl-1,4-diazepan-1-yl)sulfonyl)phenyl)quinoline-3-carbonitrile (NEU-924, 83) for T. cruzi and N-(3-chloro-4-((3-fluorobenzyl)oxy)phenyl)-7-(4-((4-methyl-1,4-diazepan-1-yl)sulfonyl)phenyl)cinnolin-4-amine (NEU-1017, 68) for L. major and P. falciparum.
- Devine, William,Woodring, Jennifer L.,Swaminathan, Uma,Amata, Emanuele,Patel, Gautam,Erath, Jessey,Roncal, Norma E.,Lee, Patricia J.,Leed, Susan E.,Rodriguez, Ana,Mensa-Wilmot, Kojo,Sciotti, Richard J.,Pollastri, Michael P.
-
supporting information
p. 5522 - 5537
(2015/08/03)
-
- Iodine-catalyzed expeditious synthesis of sulfonamides from sulfonyl hydrazides and amines
-
A new synthesis of sulfonamides has been developed via an iodine-catalyzed sulfonylation of amines with arylsulfonyl hydrazides. This metal-free strategy employs readily accessible and easy to handle starting materials, catalysts and oxidants, and can be easily conducted under mild conditions, providing a convenient access to a wide range of sulfonamides in moderate to excellent yields within a short reaction time.
- Yotphan, Sirilata,Sumunnee, Ladawan,Beukeaw, Danupat,Buathongjan, Chonchanok,Reutrakul, Vichai
-
p. 590 - 597
(2016/01/12)
-
- Copper-catalyzed electrophilic amination of sodium sulfinates at room temperature
-
By using O-benzoyl hydroxylamines as amine sources, the first convenient copper-catalyzed electrophilic amination of sodium sulfinates has been realized. Even with 2 mol% catalyst loading, the protocol provided an efficient and straightforward synthesis of a broad range of functional sulfonamides under ambient reaction conditions without an additional base and ligand. Based on the control experiments, a plausible mechanism was proposed.
- Zhu, Haibo,Shen, Yajing,Deng, Qinyue,Tu, Tao
-
supporting information
p. 16573 - 16576
(2015/11/18)
-
- Sulfonamide formation from sodium sulfinates and amines or ammonia under metal-free conditions at ambient temperature
-
A novel, practical and highly efficient method for the construction of a variety of sulfonamides mediated by I2 was demonstrated. The reaction proceeds readily at room temperature using a variety of sodium sulfinates and amines or ammonia in water in a metal-, base-, ligand-, or additive-free protocol. Primary, secondary and tertiary sulfonamides were obtained in good to excellent yields with a broad range of functional group tolerability. This journal is
- Yang, Kai,Ke, Miaolin,Lin, Yuanguang,Song, Qiuling
-
p. 1395 - 1399
(2015/03/18)
-
- SUBSTITUTED BENZOFURANYL AND BENZOXAZOLYL COMPOUNDS AND USES THEREOF
-
The invention generally relates to substituted benzofuranyl and substituted benzoxazolyl compounds, and more particularly to a compound represented by Structural Formula (A) : or a pharmaceutically acceptable salt thereof, wherein the variables are as defined and described herein. The invention also includes the synthesis and use of a compound of Structural Formula (A), or a pharmaceutically acceptable salt or composition thereof, e.g., in the treatment of cancer (e.g., mantle cell lymphoma), and other diseases and disorders.
- -
-
Paragraph 00443; 00450
(2015/01/16)
-
- Selective palladium-catalyzed direct C-H arylation of unsubstituted N-protected pyrazoles
-
A highly selective C-5 arylation of N-dimethylaminosulfamoyl-protected pyrazole with aryl bromides is catalyzed by 2-5 mol% palladium in the presence of triphenylphosphine ligand and carboxylic acid additive. Selectivities up to 45:1 (C-5:C-4) can be achieved by running the reaction in non-polar solvents. A thorough study of scope and limitations shows good general tolerance of aryl bromide substitution. However, limitations on tolerance of ortho-subsitution and protic functional groups were established. Together with a telescoped deprotection step this method presents a viable alternative for the synthesis of C-3 arylated pyrazole building blocks.
- Kumpulainen, Esa T. T.,Pohjakallio, Antti
-
supporting information
p. 1555 - 1561
(2014/06/09)
-
- SUBSTITUTED PYRIDOPYRAZINES AS NOVEL SYK INHIBITORS
-
Provided are pyridopyrazine compounds of formula (1), pharmaceutical compositions thereof and methods of use therefore, wherein R1, R2, R3, R4 and m are as defined in the specification.
- -
-
Paragraph 0274; 0275
(2014/05/08)
-
- SUBSTITUTED 2-AZA-BICYCLO[2.2.1]HEPTANE-3-CARBOXYLIC ACID (BENZYL-CYANO-METHYL)-AMIDES INHIBITORS OF CATHEPSIN C
-
This invention relates to 2-Aza-bicyclo[2.2.1]heptane-3-carboxylic acid (benzyl-cyano-methyl)- amides of formula (1) and their use as inhibitors of Cathepsin C, pharmaceutical compositions containing the same, and methods of using the same as agents for treatment and/or prevention of diseases connected with dipeptidyl peptidase I activity, e.g. respiratory diseases.
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-
Page/Page column 206
(2014/09/29)
-
- SUBSTITUTED 2-AZA-BICYCLO[2.2.1]HEPTANE-3-CARBOXYLIC ACID (BENZYL-CYANO-METHYL)-AMIDES INHIBITORS OF CATHEPSIN C
-
This invention relates to 2-Aza-bicyclo[2.2.1]heptane-3-carboxylic acid(benzyl-cyano-methyl)-amides of formula 1 and their use as inhibitors of Cathepsin C, pharmaceutical compositions containing the same, and methods of using the same as agents for treatment and/or prevention of diseases connected with dipeptidyl peptidase I activity, e.g. respiratory diseases.
- -
-
Paragraph 0523; 0524; 0525
(2014/09/29)
-
- Design, synthesis, and pharmacological evaluation of benzamide derivatives as glucokinase activators
-
A series of benzamide derivatives were assembled by using the privileged-fragment-merging (PFM) strategy and their SAR studies as glucokinase activators were described. Compounds 5 and 16b were identified having a suitable balance of potency and activation profile. They showed EC50 values of 28.3 and 44.8 nM, and activation folds of 2.4 and 2.2, respectively. However, both compounds displayed a minor reduction in plasma glucose levels on imprinting control region (ICR) mice. Unfavorable pharmacokinetic profiles (PK) were also observed on these two compounds.
- Mao, Weiwei,Ning, Mengmeng,Liu, Zhiqing,Zhu, Qingzhang,Leng, Ying,Zhang, Ao
-
scheme or table
p. 2982 - 2991
(2012/07/14)
-
- Discovery of novel potent and highly selective glycogen synthase kinase-3β (GSK3β) inhibitors for Alzheimers Disease: Design, synthesis, and characterization of pyrazines
-
Glycogen synthase kinase-3β, also called tau phosphorylating kinase, is a proline-directed serine/threonine kinase which was originally identified due to its role in glycogen metabolism. Active forms of GSK3β localize to pretangle pathology including dystrophic neuritis and neurofibrillary tangles in Alzheimers disease (AD) brain. By using a high throughput screening (HTS) approach to search for new chemical series and cocrystallization of key analogues to guide the optimization and synthesis of our pyrazine series, we have developed highly potent and selective inhibitors showing cellular efficacy and bloo-brain barrier penetrance. The inhibitors are suitable for in vivo efficacy testing and may serve as a new treatment strategy for Alzheimers disease.
- Berg, Stefan,Bergh, Margareta,Hellberg, Sven,Hoegdin, Katharina,Lo-Alfredsson, Yvonne,Soederman, Peter,Von Berg, Stefan,Weigelt, Tatjana,Ormoe, Mats,Xue, Yafeng,Tucker, Julie,Neelissen, Jan,Jerning, Eva,Nilsson, Yvonne,Bhat, Ratan
-
p. 9107 - 9119,13
(2020/10/15)
-
- INHIBITORS OF JANUS KINASES
-
The instant invention provides for compounds that inhibit the four known mammalian JAK kinases (JAK1, JAK2, JAK3 and TYK2). The invention also provides for compositions comprising such inhibitory compounds and methods of inhibiting the activity of JAK1, JAK2, JAK3 and TYK2 by administering the compound to a patient in need of treatment for myeloproliferative disorders or cancer
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Page/Page column 57
(2010/04/03)
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- INHIBITORS OF JANUS KINASES
-
The instant invention provides for compounds that inhibit the four known mammalian JAK kinases (JAK1, JAK2, JAK3 and TYK2). The invention also provides for compositions comprising such inhibitory compounds and methods of inhibiting the activity of JAK1, J
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-
Page/Page column 36-37
(2010/04/03)
-
- Dynamic 1H NMR spectroscopic study of the ring inversion in N-sulfonyl morpholines - Studies on N-S interactions
-
(Chemical Equation Presented) The effect of the exocyclic conjugation, via d-p orbital interaction and/or negative hyperconjugation (anomeric effect) of the N-S bond, on the inversion of the morpholine ring in some N-arylsulfonyl morpholines is studied by variable-temperature 1H NMR spectroscopy in different solvents. The observed free energy barriers are 9.2-10.3 kcal mol-1; the lower values were obtained with increasing conjugation (substituents of higher electron withdrawing power) along the series. The barrier to ring inversion of 1e was solvent independent. X-ray data of compounds 1b,d reveal the chair conformation of the six-membered ring, the flattened pyramidal orientation of the ring nitrogen atom, and the sulfonyl group in equatorial position with the plane containing the Caryl-S-N bond perpendicular to the plane of the benzene ring. In addition, the sulfonamide group prefers a conformation with the S-C bond antiperiplanar with respect to the nitrogen atom lone pair and the -CH2-N-CH2- moieties in staggered conformation with the S-O bonds of the SO2 group.
- Modarresi-Alam, Ali Reza,Amirazizi, Homeyra Alsadat,Bagheri, Hajar,Bijanzadeh, Hamid-Reza,Kleinpeter, Erich
-
supporting information; experimental part
p. 4740 - 4746
(2009/10/09)
-
- ARYL SULFONAMIDES USEFUL FOR MODULATION OF THE PROGESTERONE RECEPTOR
-
In one embodiment, compounds of the following structure are described, wherein R1 to R7 are described herein. Also provided are methods for preparing these compounds and methods of contraception; treating or preventing fibroids; trea
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-
Page/Page column 12
(2008/12/08)
-
- Discovery of a potent CDK2 inhibitor with a novel binding mode, using virtual screening and initial, structure-guided lead scoping
-
Virtual screening against a pCDK2/cyclin A crystal structure led to the identification of a potent and novel CDK2 inhibitor, which exhibited an unusual mode of interaction with the kinase binding motif. With the aid of X-ray crystallography and modelling,
- Richardson, Christine M.,Nunns, Claire L.,Williamson, Douglas S.,Parratt, Martin J.,Dokurno, Pawel,Howes, Rob,Borgognoni, Jenifer,Drysdale, Martin J.,Finch, Harry,Hubbard, Roderick E.,Jackson, Philip S.,Kierstan, Peter,Lentzen, Georg,Moore, Jonathan D.,Murray, James B.,Simmonite, Heather,Surgenor, Allan E.,Torrance, Christopher J.
-
p. 3880 - 3885
(2008/02/08)
-
- Acetylenyl-pyrazolo-pyrimidine derivatives
-
The present invention relates to compounds of formula (I): wherein R1 to R3, A, M, L, E, G, and J are as defined in the description and claims. The invention also relates to a process for the manufacture of such compounds, pharmaceutical compositions containing them, and methods for treating CNS disorders.
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Page/Page column 29
(2008/06/13)
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- SYNTHESIS OF SULFONAMIDE DERIVATIVES
-
The novel method of synthesis of sulphonamide derivatives (I), comprising reaction of alkyl-4-halophenylsulfonate with an amine. Formula (I) wherein X is halogen and R1 and R2 are independently selected from group comprising (i) C1 to C15 alkyl, straight or branched, (ii) C3 to C15 cycloalkyl, substituted or unsubstituted, (iii) C2 to C15 alkenyl, straight or branched, (iv) C2 to C15 alkynyl, straight or branched, (v) phenyl or benzyl, substituted or unsubstituted, (vi) heterocycloalkyl, substituted or unsubstituted, (vii) hydrogen, (viii) form with the nitrogen to which they are attached a 3-7 membered heterocyclic moiety such as pyrolidine, piperidine, piperazine, imidazole, pyrazole, (ix) the alkyl in i) may be attached to a moiety selected from cycloalkyl or heterocycloalkyl, substituted or unsubstituted
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-
-
- Cytoprotective compounds, pharmaceutical and cosmetic formulations, and methods
-
Cytoprotective compounds, many of which are phenolic derivatives characterized by a substituted phenol having certain conjugated bonds, are useful in the treatment of certain ischemic or inflammatory conditions, including but not limited to stroke, myocardial infarction, congestive heart failure, and skin disorders characterized by inflammation or oxidative damage. They are also useful in the manufacture of pharmaceutical and cosmetic formulations for the treatment of such conditions.
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