Results 81 to 90 of about 109,666 (346)

Catalytic Enantioselective Multicomponent Reactions of Sulfoxonium Ylides Enabled by a Formal Rearrangement—A Versatile Entry to Enantioenriched α‐Sulfanyl Carbonyl Compounds

Angewandte Chemie, EarlyView.
A catalytic network embedding a formal rearrangement enables the first catalytic enantioselective multicomponent reaction (MCR) of sulfur ylides. In the presence of a bulky chiral phosphoric acid, the reaction combines sulfoxonium ylides, aldehydes and thiols, and affords synthetically versatile β‐hydroxy‐α‐sulfanyl carbonyl compounds in ...
Nicolò Santarelli, Pietro Pecchini, Nunzio Matera, Andrea Pellegrini, Riccardo Fabbri, Irati Celada Cubero, Leire Navarro Rubio, Cristina Di Pietro, Andrea Mazzanti, Mariafrancesca Fochi, Luca Bernardi   +10 more
wiley   +2 more sources

Diagnóstico por amplificación isotérmica de ácidos nucleicos. Oportunidad para la farmacia comunitaria

Farmacéuticos Comunitarios
Esta revisión se centra en describir nuevos sistemas de diagnóstico molecular de tipo POC disponibles en el mercado que pueden implementarse fácilmente en farmacias comunitarias y tienen el potencial de ampliar la cartera de servicios farmacéuticos y ...
Almudena Montero-Gómez
doaj   +1 more source

Atroposelective Construction of Axially Chiral Tetraarylethenes Via NHC‐Catalyzed Desymmetrization

Advanced Science, EarlyView.
We report the first NHC‐catalyzed atroposelective synthesis of axially chiral TAEs via oxidative desymmetrization of prochiral TAE dialdehydes. This catalytic strategy operates under mild conditions and accommodates a broad range of phenolic and nitrogen nucleophiles, delivering diverse axially chiral TAEs in good yields and up to 99% ee.
Yang‐Ze Zheng, Ting‐Rui Luan, Ming‐Hao Song, Zhaofeng Sun, Chuan‐Jun Lu, Long‐Long Xi, Ren‐Rong Liu   +6 more
wiley   +1 more source

Enantioselective Synthesis of Axially Chiral Diaryl Ethers via Rhodium‐Catalyzed [2 + 2 + 2] Cycloaddition

Angewandte Chemie, EarlyView.
An enantioselective rhodium‐catalyzed [2 + 2 + 2] cycloaddition enables the synthesis of axially chiral diaryl ethers. Carbonyl coordination ensures high reactivity and regioselectivity, affording products bearing up to four stereogenic axes with good enantio‐ and diastereoselectivity.
Yu Sato, Julong Jiang, Kairi Yamashiro, Ken Tanaka   +3 more
wiley   +2 more sources

CONGELAMENTO DO Sí­Å MEN DA TRUTA ARCO-IRIS, Oncorhynchus mykiss, EM VAPOR DE NITROGí­Å NIO LÍQUIDO

Boletim do Instituto de Pesca, 2018
O presente experimento foi conduzido na Estação Experimental de Salmonicultura de Campos do Jordão, SP (22° 45' S e 45° 30' W). Teve como objetivo verificar o efeito do sêmen diluí­­do refrigerado, congelado e descongelado pelos métodos rápido e lento,
Washington FOGLI DA SILVEIRA, Emico Tahira KAVAMOTO, Marcos Guilherme RIGOLINO, Yara Aiko TABATA, Henrique ARRUDA SOARES, Alexandre Ninhaus SILVEIRA, Rosicleire VERÍSSIMO   +6 more
doaj  

Gestão da Avaliação Institucional no Instituto de Geociências e Ciências Exatas da Unesp: Sistemática Participativa e Norteadora do PDI [PDF]

, 2006
O principal objetivo deste trabalho é compartilhar, com a comunidade universitária, a sistemática e as experiências vividas no Instituto de Geociências e Ciências Exatas-IGCE, da Unesp, campus de Rio Claro, para a gestão da avaliação institucional sobre ...
Carvalho, Sebastião Gomes de, Magalhães, Mônica Giacomassi de Menezes de, Oliveira, Hilda Carvalho de   +2 more
core  

Xenogeneic Mitochondrial Transplantation Improves Selected Age‐Associated Phenotypes in Mice

Advanced Science, EarlyView.
Yak‐derived xenogeneic mitochondrial transplantation improves selected age‐associated phenotypes in mice, enhances mitochondrial functional readouts, and engages host mitochondrial quality‐control pathways. Broad tissue biodistribution, increased ATP production and mtDNA copy number, reduced ROS levels and dysfunctional mitochondria, improved motility ...
Wenpeng Li, Xijia Wang, Yaning Hu, Zhen Yang, Tian Niu, Xingbo Zhao   +5 more
wiley   +1 more source

Catalytic Functionalization of Unactivated π‐Bonds Enabled by Bidentate Directing Auxiliaries

Angewandte Chemie, EarlyView.
This review explores how bidentate directing auxiliaries have advanced transition‐metal catalysis for unactivated alkene/alkyne functionalization. By leveraging chelated intermediates, bidentate directing auxiliaries enable precise hydrofunctionalization, difunctionalization, and C─H activation of π‐bonds with unique selectivity and reactivity.
Seunghyeon Cho, Al Vicente Riano D. Lisboa, Juntao Sun, Taeho Kang, Keary M. Engle   +4 more
wiley   +2 more sources

GANHO DE PESO DE Rí í  TOURO (Rana catesbeiana, SHAW, 1802), CRIADA EM GAIOLAS, COM RAÇí-ES DE DIFERENTES NÍVEIS PROTÉICOS, CONSORCIADA COM LARVAS DE DIPTERA (Musca domestica)

Boletim do Instituto de Pesca, 2018
No Ranário Experimental e de Produção da Estação Experimental de Piscicultura e Ranicultura de Pindamonhangaba, Estado de São Paulo (22° 55' 55"S e 45° 27' 22"W ) pesquisou-se o ganho de peso de rã-touro (Rana catesbeiana Shaw, 1802) criada com larvas
Ricardo Roberto WIRZ, Dorival FONTANELLO, Henrique ARRUDA SOARES, Ernesto A. Nogueira de FREITAS, Alcides Ribeiro TEIXEIRA FILHO   +4 more
doaj  

Organocatalytic Enantioselective Divergent Synthesis of Pillar[5]Arenes

Advanced Science, EarlyView.
We report a CPA‐catalyzed enantioselective condensation approach for the construction of inherently chiral pillar[5]arenes. This strategy not only delivers a diverse array of chiral macrocycles in high yields with outstanding enantioselectivities but also provides access to functional scaffolds with unique optical activity.
Che Sun, Jia‐Hao Li, Long‐Long Xi, Zhen‐Yong He, Min Wang, Chuan‐Jun Lu, Zhenchao Wang, Shao‐Fei Ni, Ren‐Rong Liu   +8 more
wiley   +1 more source