Results 111 to 120 of about 12,861 (208)

Combining the Ugi-azide multicomponent reaction and rhodium(III)-catalyzed annulation for the synthesis of tetrazole-isoquinolone/pyridone hybrids

Beilstein Journal of Organic Chemistry, 2019
An efficient sequence based on the Ugi-azide reaction and rhodium(III)-catalyzed intermolecular annulation has been established for the preparation of tetrazole-isoquinolone/pyridone hybrids.
Gerardo M. Ojeda, Prabhat Ranjan, Pavel Fedoseev, Lisandra Amable, Upendra K. Sharma, Daniel G. Rivera, Erik V. Van der Eycken   +6 more
doaj   +1 more source

Design, Synthesis and Anti-fibrosis Activity Study of N1-Substituted Phenylhydroquinolinone Derivatives

Molecules, 2012
Pirfenidone (5-methyl-1-phenyl-2(1H)-pyridone, PFD) is a small-molecule compound acting on multiple targets involved in pathological fibrogenesis and is effective to increase the survival of patients with fibrosis, such as idiopathic pulmonary fibrosis ...
Jun Chen, Lijian Tao, Qianbin Li, Bin Liu, Ling Wu, Gaoyun Hu   +5 more
doaj   +1 more source

Total synthesis of (−)-epimyrtine by a gold-catalyzed hydroamination approach

Beilstein Journal of Organic Chemistry, 2013
A new approach to the total synthesis of (−)-epimyrtine has been developed from D-alanine. The key step to access the enantiopure pyridone intermediate was achieved by a gold-mediated cyclization.
Thi Thanh Huyen Trinh, Khanh Hung Nguyen, Patricia de Aguiar Amaral, Nicolas Gouault   +3 more
doaj   +1 more source

Examining the safety of nicotinamide for skin cancer prevention: Review of adverse events, metabolism, and toxic dosages

JAAD Reviews
Nicotinamide (niacinamide) supplementation for non-melanoma skin cancer prevention has sparked controversy over the past decade due to its inconsistent evidence of chemoprevention and its recently challenged safety profile.
Katie R. Xu, BA, Micah Belzberg, MD, Allison T. Vidimos, MD, RPh   +2 more
doaj   +1 more source

Urinary N-methylnicotinamide and β-aminoisobutyric acid predict catch-up growth in undernourished Brazilian children [PDF]

, 2015
Guerrant, RL, Havt, A, Leite, Á, Lima, AAM, Lima, NL, Mayneris-Perxachs, J, Moore, SR, Moura, AF, Pinkerton, R, Soares, AM, Swann, JR   +10 more
core   +1 more source

Antiferro- and Ferromagnetic Behaviors of Two New m1,3-N3 and m1,1-N3 Bridged Dinuclear Nickel(II) Complexes with 2,6-Bis(2-pyridyl)-4(1H)-pyridone and 2,6-Dimethyl-2,3-bis (2-pyridyl)quinoxaline Ligands [PDF]

[[abstract]]Two new N3-bridged dinuclear nickel(II) complexes, [Ni(ddqx)2 (μ1,3-N3)]2(ClO4)2⋅8CH3OH 1 and [Ni(tpd)(μ1,1-N3)(H2O)]2 2, (ddqx = 2,6-dimethyl-2,3-bis(2-pyridyl)quinoxaline and Htpd = 4-terpyridone = 2,6-bis(2-pyridyl)-4(1H)-pyridone), have ...
魏和祥
core  

Tautomeric Equilibria Studies by Mass Spectrometry [PDF]

, 2008
Tautomerism in organic chemistry has been extensively studied in condensed phase by spectrometric methods, mainly by IR and NMR techniques. Mass spectrometry studies start 40 years ago but just recently it has been recognized the importance of the mass ...
Eduardo A. Castro, Jorge J. Furlong, Mercedes M. Schiavonni, Patricia E. Allegretti   +3 more
core   +1 more source

Leucaena leucocephala in ruminant nutrition [PDF]

, 2014
It is a common situation in extensive ruminant production systems in tropical countries to have low production indicators due to nutrient deficiencies in the diet.
Barros-Rodriguez, Marcos, Klieve, Athol V., Rojas-Herrera, R., Sandoval-Castro, Carlos A., Sarmiento-Franco, Luis A., Solorio-Sanchez, Javier   +5 more
core   +1 more source

UV-Induced Isomerization Dynamics of N-Methyl-2-pyridone in Solution [PDF]

, 2015
Ashfold, Michael N R, Clark, Ian P, Greetham, Gregory M, Harris, Stephanie J, Murdock, Daniel, Orr-Ewing, Andrew J, Towrie, Michael   +6 more
core   +1 more source

Reactions de substitution des sels d'alkoxy-4 pyridinium [PDF]

, 1976
B. Mansour, D. Mansuy, H. Langhals, Julia, Kosower, Lamb, M. Julia, Mukaiyama, P. Mattei, Parker, Schmid, Vogel   +11 more
core   +1 more source