- BIOCONJUGATION OF POLYPEPTIDES
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Certain embodiments of the present invention relate to methods of forming and manipulating bioconjugates. Particularly, but not exclusively certain embodiments relate to methods of reversible carbon-carbon bond bioconjugation using aldol based chemical reactions at physiological conditions.
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Page/Page column 58; 63; 64
(2019/04/26)
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- Palladium-unleashed proteins: Gentle aldehyde decaging for site-selective protein modification
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Protein bioconjugation frequently makes use of aldehydes as reactive handles, with methods for their installation being highly valued. Here a new, powerful strategy to unmask a reactive protein aldehyde is presented. A genetically encoded caged glyoxyl aldehyde, situated in solvent-accessible locations, can be rapidly decaged through treatment with just one equivalent of allylpalladium(ii) chloride dimer at physiological pH. The protein aldehyde can undergo subsequent oxime ligation for site-selective protein modification. Quick yet mild conditions, orthogonality and powerful exposed reactivity make this strategy of great potential in protein modification.
- Brabham, Robin L.,Spears, Richard J.,Walton, Julia,Tyagi, Swati,Lemke, Edward A.,Fascione, Martin A.
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supporting information
p. 1501 - 1504
(2018/02/19)
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- HETEROCYCLE CARBOXAMIDE DERIVATIVES HAVING ADAMANTYL GROUP, PROCESS FOR PREPARATION THEREOF AND PHARMACEUTICAL COMPOSITION CONTAINING THE SAME AS AN ACTIVE INGREDIENT
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The present invention relates to a heterocyclic carboxamide derivative having an adamantyl group represented by chemical formula 1 which inhibits the activity of 11andbeta;-hydroxysteroid dehydrogenase type 1 (11andbeta;-HSD1), a prodrug of the same, a solvate of the same, a stereoisomer or a pharmaceutically acceptable salt of the same, a preparation method of the same, and a pharmaceutical composition comprising the same as an active ingredient. In the chemical formula 1, W, X, R_1, R_2, L, a, and b are as defined in the specification of the present invention.COPYRIGHT KIPO 2017
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- Thiazolidine-Masked α-Oxo Aldehyde Functionality for Peptide and Protein Modification
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α-Oxo aldehyde-based bioconjugation chemistry has been widely explored in peptide and protein modifications for various applications in biomedical research during the past decades. The generation of α-oxo aldehyde via sodium periodate oxidation is usually limited to the N-terminus of a target protein. Internal-site functionalization of proteins with the α-oxo aldehyde handle has not been achieved yet. Herein we report a novel method for site-specific peptide and protein modification using synthetically or genetically incorporated thiazolidine-protected α-oxo aldehyde. Efficient unmasking of the aldehyde was achieved by silver ion-mediated hydrolysis of thiazolidine under mild conditions for the first time. A model peptide and a recombinant protein were used to demonstrate the utility of this new method, which were site-specifically modified by oxime ligation with an oxyamine-functionalized peptide labeling reagent. Therefore, our current method has enriched the α-oxo aldehyde synthetic tool box in peptide and protein bioconjugation chemistry and holds great potential to be explored in novel applications in the future.
- Bi, Xiaobao,Pasunooti, Kalyan Kumar,Lescar, Julien,Liu, Chuan-Fa
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p. 325 - 329
(2017/02/23)
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- Synthesis and 11β hydroxysteroid dehydrogenase 1 inhibition of thiazolidine derivatives with an adamantyl group
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A new series of thiazolidine derivatives with an adamantyl group was synthesized and evaluated for their ability to inhibit 11β-hydroxysteroid dehydrogenase 1 (11β-HSD1). Our initial compound 5a showed a weak inhibitory activity. Significant improvements in potency were achieved by substituent modification. The potent compound 8g (E) showed good in vitro inhibitory activity toward human 11β-HSD1, selectivity toward 11β-HSD2, metabolic stability, pharmacokinetic, and safety profile. Furthermore, this compound significantly inhibited 11β-HSD1 activity in rat and monkey models, and showed improved glycemic control in KKAy mice.
- Kwon, Sung Wook,Kang, Seung Kyu,Lee, Jae Hong,Bok, Joo Hwan,Kim, Chi Hyun,Rhee, Sang Dal,Jung, Won Hoon,Kim, Hee Youn,Bae, Myung Ae,Song, Jin Sook,Ha, Duck Chan,Cheon, Hyae Gyoung,Kim, Ki Young,Ahn, Jin Hee
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scheme or table
p. 435 - 439
(2011/02/28)
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- [2 + 2] Cycloaddition reactions of imines with cyclic ketenes: Synthesis of 1,3-thiazolidine derived spiro-β-lactams and their transformations
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Unsymmetric cyclic ketenes were generated from N-acyl-1,3-thiazolidine-2- carboxylic acids 1a-c by means of Mukaiyama's reagent, and then reacted with imines 2a-c to the new, isomeric spiro-β-lactams 3 and 4 via [2 + 2] cycloaddition (Staudinger ketene-imine reaction; Scheme 1). The reactions were stereoselective (Table 1) and mainly afforded the spiro-β-lactams with a relative trans configuration. The spiro-β-lactams could be transformed into the corresponding monocyclic β-lactams by means of thiazolidine ring opening or into substituted thiazolidines via hydrolysis of the β-lactam ring.
- Cremonesi, Giuseppe,Dalla Croce, Piero,La Rosa, Concetta
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p. 1580 - 1588
(2007/10/03)
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- Design and synthesis of non-hydroxamate histone deacetylase inhibitors: Identification of a selective histone acetylating agent
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A series of suberoylanilide hydroxamic acid (SAHA)-based non-hydroxamates was designed, synthesized, and evaluated for their histone deacetylase (HDAC) inhibitory activity. Among these, methyl sulfoxide 15 inhibited HDACs in enzyme assays and caused hyperacetylation of histone H4 while not inducing the accumulation of acetylated α-tubulin in HCT116 cells.
- Suzuki, Takayoshi,Matsuura, Azusa,Kouketsu, Akiyasu,Hisakawa, Shinya,Nakagawa, Hidehiko,Miyata, Naoki
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p. 4332 - 4342
(2007/10/03)
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- Derivatives of 2-(iminomethyl)amino-phenyl, their preparation, their use as medicaments and the pharmaceutical compositions containing them
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The invention relates to new derivatives of 2-(iminomethyl)amino-phenyl which are NO synthase inhibitors and can trap reactive oxygen species. These compounds can notably be used for the treatment of stroke, of neurodegenerative diseases and of ischemic or hemorragic cardiac or cerebral infarctions. These compounds include: N-{4-[({[4-(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3-thiazol-2-yl]methyl}amino)methyl]phenyl}thiophene-2-carboximidamide; N-{3-[({[4-(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3-thiazol-2-yl]methyl}amino)methyl]phenyl}thiophene-2-carboximidamide; N-(4-{[{[4-(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3-thiazol-2-yl]methyl}(methyl)amino]methyl}phenyl)thiophene-2-carboximidamide; N-[3-({[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propyl]amino}methyl)phenyl]thiophene-2-carboximidamide; N-(3-{[(3,5-di-tert-butyl-4-hydroxybenzyl)amino]methyl}phenyl)thiophene-2-carboximidamide; N-[3-({[2-(3,5-di-tert-butyl-4-hydroxyphenyl)ethyl]amino}methyl)phenyl]thiophene-2-carboximidamide; N-[3-({[3-(4-hydroxy-3,5-diisopropylphenyl)propyl]amino}methyl)phenyl]thiophene-2-carboximidamide; N-(3-{[(4-hydroxy-3,5-diisopropylbenzyl)amino]methyl}phenyl) thiophene-2-carboximidamide; N-[3-({[2-(4-hydroxy-3,5-diisopropylphenyl)ethyl]amino}methyl)phenyl]thiophene-2-carboximidamide; N-2-(3,5-di-tert-butyl-4-hydroxybenzoyl)-N-1-(4-{[imino(thien-2-yl)methyl]amino}phenyl)-L-leucinamide; and pharmaceutically acceptable salts thereof.
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- New derivatives of 2-(iminomethyl)amino-phenyl, their preparation, their use as medicaments and the pharmaceutical compositions containing them
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The invention relates to new derivatives of 2-(iminomethyl)amino-phenyl which are NO synthase inhibitors and can trap reactive oxygen species. These compounds can notably be used for the treatment of stroke, of neurodegenerative diseases and of ischemic or hemorragic cardiac or cerebral infarctions. These compounds include: N-{4-[({[4-(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3-thiazol-2-yl]methyl}amino)methyl]phenyl}thiophene-2-carboximidamide; N-{3-[({[4-(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3-thiazol-2-yl]methyl}amino)methyl]phenyl}thiophene-2-carboximidamide; N-(4-{[{[4-(3,5-di-tert-butyl-4-hydroxyphenyl)-1,3-thiazol-2-yl]methyl}(methyl)amino]methyl}phenyl)thiophene-2-carboximidamide; N-[3-({[3-(3,5-di-tert-butyl-4-hydroxyphenyl)propyl]amino}methyl) phenyl]thiophene-2-carboximidamide; N-(3-{[(3,5-di-tert-butyl-4-hydroxybenzyl)amino]methyl}phenyl) thiophene-2-carboximidamide; N-[3-({[2-(3,5-di-tert-butyl-4-hydroxyphenyl)ethyl]amino}methyl) phenyl]thiophene-2-carboximidamide; N-[3-({[3-(4-hydroxy-3,5-diisopropylphenyl)propyl]amino}methyl) phenyl]thiophene-2-carboximidamide; N-(3-{[(4-hydroxy-3,5-diisopropylbenzyl)amino]methyl}phenyl) thiophene-2-carboximidamide; N-[3-({[2-(4-hydroxy-3,5-diisopropylphenyl)ethyl]amino}methyl) phenyl]thiophene-2-carboximidamide; N-2-(3,5-di-tert-butyl-4-hydroxybenzoyl)-N-1-(4-{[imino(thien-2-yl)methyl]amino}phenyl)-L-leucinamide; and pharmaceutically acceptable salts thereof.
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- Derivatives of 2-(iminomethyl)amino-phenyl, their preparation, their use as medicaments and the pharmaceutical compositions containing them
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A compound selected from the group consisting of a compound of the formula wherein A is selected from the group consisting of and the other substituents are defined in the specification having an inhibitory activity of NO-synthase enzymes producing nitrogen mono-oxide and/or an activity which traps the reactive oxygen species.
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Page column 90
(2008/06/13)
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