Results 31 to 40 of about 5,409,859 (340)

Catalytic Enantioselective Methylene C(sp3)-H Amidation of 8-Alkylquinolines Using Cp*RhIII/Chiral Carboxylic Acid System.

Angewandte Chemie, 2019
The catalytic enantioselective directed methylene C(sp 3 )-H amidation reactions of 8-alkylquinolines using a Cp*Rh III /chiral carboxylic acid (CCA) hybrid catalytic system is described.
Seiya Fukagawa, M. Kojima, Tatsuhiko Yoshino, S. Matsunaga   +3 more
semanticscholar   +1 more source

Indole-3-Carboxylic Acid Enhanced Anti-cancer Potency of Doxorubicin via Induction of Cellular Senescence in Colorectal Cells [PDF]

Acta Poloniae Pharmaceutica
Background: Colorectal cancer (CRC) is the most common gastrointestinal malignancy. Doxorubicin (DOX) is a widely utilized chemotherapy drug, but its efficacy is limited due to dose-dependent toxicity.
Yao Zhou, Yi Tang, Qingping Luo, Yuhang Hu, Wei Peng   +4 more
doaj   +1 more source

Facile synthesis of cooperative acid-base catalysts by clicking cysteine and cysteamine on an ethylene-bridged periodic mesoporous organosilica [PDF]

, 2016
A periodic mesoporous organosilica (PMO) that contains ethylene bridges was functionalized to obtain a series of cooperative acid-base catalysts. A straightforward, single-step procedure was devised to immobilize cysteine and cysteamine on the support ...
Esquivel Merino, Maria Dolores, Hendrickx, Kevin, Lauwaert, Jeroen, Ouwehand, Judith, Thybaut, Joris, Van Der Voort, Pascal, Van Speybroeck, Veronique   +6 more
core   +2 more sources

Bromopyrrole alkaloids from the caribbean sponge Agelas cerebrum

Química Nova, 2011
Bioguided fractionation of Agelas cerebrum crude extract resulted in isolation of four bromopyrrole and four bromopyrrole aminoimidazole alkaloids, identified as 5-bromopyrrole-2-carboxylic acid (1), 4-bromopyrrole-2-carboxylic acid (2), 3,4-bromopyrrole-
Erik L. Regalado, Abilio Laguna, Judith Mendiola, Olivier P. Thomas, Clara Nogueiras   +4 more
doaj   +1 more source

Acrylic acid plasma coated 3D Scaffolds for Cartilage tissue engineering applications [PDF]

, 2018
The current generation of tissue engineered additive manufactured scaffolds for cartilage repair shows high potential for growing adult cartilage tissue.
Cools, Pieter, De Geyter, Nathalie, Ghobeira, Rouba, Lorenzo-Moldero, Ivan, Morent, Rino, Moroni, Lorenzo, Mota, Carlos   +6 more
core   +2 more sources

Chiral Carboxylic Acid Enabled Achiral Rhodium(III)-Catalyzed Enantioselective C-H Functionalization.

Angewandte Chemie, 2018
Reported is an achiral Cpx RhIII /chiral carboxylic acid catalyzed asymmetric C-H alkylation of diarylmethanamines with a diazomalonate, followed by cyclization and decarboxylation to afford 1,4-dihydroisoquinolin-3(2H)-one. Secondary alkylamines as well
Luqing Lin, Seiya Fukagawa, Daichi Sekine, Eiki Tomita, Tatsuhiko Yoshino, S. Matsunaga   +5 more
semanticscholar   +1 more source

The role of salicylic acid, L-ascorbic acid and oxalic acid in promoting the oxidation of alkenes with H(2)O(2) catalysed by [Mn(IV) (2)(O)(3)(tmtacn)(2)](2+) [PDF]

, 2008
The role played by the additives salicylic acid, L-ascorbic acid and oxalic acid in promoting the catalytic activity of [Mn(IV) (2)(O)(3)(tmtacn)(2)](PF(6))(2) {1(PF(6))(2), where tmtacn = N, N ', N ''-trimethyl-1,4,7-triazacyclononane} in the ...
Alsters, Paul L., Browne, Wesley R., de Boer, Johannes W., Feringa, Ben L., Hage, Ronald, Meetsma, Auke   +5 more
core   +2 more sources

Heterocycles [h]-Fused Onto 4-Oxoquinoline-3-Carboxylic Acid, Part VIII [1]. Convenient Synthesis and Antimicrobial Properties of Substituted Hexahydro[1,4]diazepino[2,3-h]quinoline-9-carboxylic acid and Its Tetrahydroquino[7,8-b]benzodiazepine Analog

Molecules, 2008
[1,4]Diazepino[2,3-h]quinolone carboxylic acid 3 and its benzo-homolog tetrahydroquino[7,8-b]benzodiazepine-3-carboxylic acid 5 were prepared via PPAcatalyzed thermal lactamization of the respective 8-amino-7-substituted-1,4-dihydroquinoline-3-carboxylic
Yusuf M. Al-Hiari, Rana Abu-Dahab, Mustafa M. El-Abadelah   +2 more
doaj   +1 more source

Synthesis of biodegradable polyesteramides with pendant functional groups [PDF]

, 1992
Morpholine-2,5-dione derivatives having substituents with benzyl-protected carboxylic acid, benzyloxycarbonyl-protected amine and p-methoxy-protected thiol groups, respectively, were prepared in 29-58% yield by cyclization of the corresponding N-[(2RS ...
Dijkstra, Pieter J., Feijen, Jan, Veld, Peter J.A. in 't   +2 more
core   +3 more sources

DSSC Anchoring Groups: A Surface Dependent Decision [PDF]

, 2014
Electrodes in dye sensitised solar cells (DSSCs) are typically nanocrystalline anatase TiO2 with a majority (101) surface exposed. Generally the sensitising dye employs a carboxylic anchoring moiety through which it adheres to the TiO2 surface.
Bowler, David R., O'Rourke, Conn
core   +2 more sources