- Direct Alkoxycarbonylation of Heteroarenes via Cu-Mediated Trichloromethylation and in Situ Alcoholysis
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We report an efficient approach for direct alkoxycarbonylation of furans as well as other heteroarenes via a one-step copper-mediated reaction of three components (i.e., heteroarene, alcohol, and CHCl3). The copper additive was confirmed to simultaneously promote the reaction in three pathways: oxidant cracking, single electron transfer, and alcoholysis. By means of this protocol, various functionalized furancarboxylates and other heteroarenecarboxylates were facilely obtained in moderate to good yields.
- Jiang, Huanfeng,Jiang, Kai,Li, Yingwei,Luo, Wenkun,Yin, Biaolin
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supporting information
(2020/03/04)
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- Enantioselective Synthesis of Five-Membered-Ring Atropisomers with a Chiral Rh(III) Complex
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Axially chiral atropisomeric compounds are widely applied in asymmetric catalysis and medicinal chemistry, and efficient methods for their synthesis are in high demand. This applies in particular to atropisomers derived from five-membered aromatic rings because their lower barrier for rotation among the biaryl axis limits their asymmetric synthesis. We report here an enantioselective C-H functionalization method using our chiral RhJasCp complex for the synthesis of the biaryl atropisomer types that can be accessed from three different five-membered-ring heterocycles.
- Shaaban, Saad,Li, Houhua,Otte, Felix,Strohmann, Carsten,Antonchick, Andrey P.,Waldmann, Herbert
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p. 9199 - 9202
(2020/11/30)
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- PROTEIN KINASE C AGONISTS
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The present disclosure relates generally to certain diacylglycerol lactone compounds, pharmaceutical compositions comprising said compounds, and methods of making and using said compounds and pharmaceutical compositions. The compounds and compositions dis
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Paragraph 0323
(2020/09/12)
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- Preparation method of 5-halo-benzofuran-2-formic ether compound
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The invention relates to a preparation method of a 5-halo-benzofuran-2-formic ether compound. The method specifically comprises the following steps that a compound of a formula I shown in the description and dibromoacetylene are subjected to a reaction in an organic solvent under the function of an alkaline reagent to generate a compound of a formula II, wherein R is selected from an optionally-substituted alkyl group, and X is halogen.
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Paragraph 0014-0016
(2018/10/19)
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- HETEROCYCLIC COMPOUNDS AS CALCIUM SENSING RECEPTOR MODULATORS FOR THE TREATMENT OF HYPERPARATHYROIDISM, CHRONIC RENAL FAILURE AND CHRONIC KIDNEY DISEASE
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The invention relates to heterocyclic compounds of Formula (I) and their pharmaceutically acceptable salts, wherein the substituents are as described herein, and their pharmaceutical compositions for use in medicine for the treatment of diseases or disorders associated with the modulation of calcium sensing receptor modulators (CaSR), like e.g. hyperparathyroidism, chronic renal failure and chronic kidney disease and their complications.
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Page/Page column 48
(2015/11/16)
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- Copper-catalyzed formal c-h carboxylation of aromatic compounds with carbon dioxide through arylaluminum intermediates
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The C-H bond carboxylation of various aromatic compounds with CO2 was achieved by the deprotonative alumination with a mixed alkyl amido lithium aluminate compound iBu3Al(TMP)Li followed by the NHC-copper-catalyzed carboxylation of the resulting arylaluminum species, which afforded the corresponding carboxylation products in high yield and high selectivity. In addition to benzene derivatives, heteroarenes such as benzofuran, benzothiophene, and indole derivatives are also suitable substrates. Functional groups such as Cl, Br, I, vinyl, amide, and CN could survive the reaction conditions. Some key reaction intermediates such as the copper aryl and isobutyl complexes and their carboxylation products were isolated and structurally characterized by X-ray crystallographic analyses, thus offering important information on the reaction mechanism.
- Ueno, Atsushi,Takimoto, Masanori,Wylie,Nishiura, Masayoshi,Ikariya, Takao,Hou, Zhaomin
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p. 1010 - 1016
(2015/03/31)
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- INHIBITORS OF HISTONE DEACETYLASE
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The invention relates to the inhibition of histone deacetylase. The invention provides compounds and methods for inhibiting histone deacetylase enzymatic activity. The invention also provides compositions and methods for treating cell proliferative diseases and conditions.
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Page/Page column 225
(2010/02/11)
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- Use of conformationally restricted benzamidines as arginine surrogates in the design of platelet GPIIb-IIIa receptor antagonists
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The use of 5,6-bicyclic amidines as arginine surrogates in the design of a novel class of potent platelet glycoprotein IIb-IIIa receptor (GPIIb-IIIa) antagonists is described. The additional conformational restriction offered by the bicyclic nucleus results in 20-400-fold increases in potency compared to the freely flexible, acyclic benzamidine counterpart. The design, synthesis, structure-activity relationships (SAR), and in vitro activity of this novel class of GPIIb-IIIa antagonists are presented.
- Sall, Daniel J.,Arfsten, Ann E.,Bastian, Jolie A.,Denney, Michael L.,Harms, Cathy S.,McCowan, Jefferson R.,Morin Jr., John M.,Rose, Jack W.,Scarborough, Robert M.,Smyth, Mark S.,Um, Suzane L.,Utterback, Barbara G.,Vasileff, Robert T.,Wikel, James H.,Wyss, Virginia L.,Jakubowski, Joseph A.
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p. 2843 - 2857
(2007/10/03)
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- 5,6-Bicyclic glycoprotein IIb IIIa antagonists useful in inhibition of platelet aggregation
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This invention relates to 5,6 fused ring bicyclic compounds inclusive of indoles, benzofurans, and benzothiophenes, and corresponding to the formula (I) substituted with both basic (B) and acidic (A) functionality, which are useful in inhibition of platelet aggregation.
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- Syntheses of Biscationic, Trypanocidal 1-Benzofuran Compounds
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2-Phenyl-1-benzofurans with the substituents Br, NO2, CN, and -NH2, -NH-C(=NH)-NH2, -C(=NH)-NH2, in 4',5-position were synthesized. - For arylated formamidine derivatives a simple new preparation was found by reacting amine hydrochlorides with dimethylformamide in the presence of cyanamide. - Based on 5- or 6-cyano-1-benzofuran-2-carboxylates a series of α,ω-bis(1-benzofuran-2-yl) derivatives with cyano-, amidino-, or imidazolinyl groups in 5- or 6-position was prepared.
- Dann, Otto,Char, Helmut,Griessmeier, Helmut
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p. 1836 - 1869
(2007/10/02)
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