Results 101 to 110 of about 5,225 (230)

One-Pot Metal-Free Synthesis of 3-CF3-1,3-Oxazinopyridines by Reaction of Pyridines with CF3CO-Acetylenes

open access: yesMolecules, 2019
The reaction of pyridines with trifluoroacetylated acetylenes was investigated. It was found that the reaction of various pyridines with two molecules of CF3CO-acetylenes proceeds under mild metal-free conditions.
Vasiliy M. Muzalevskiy   +4 more
doaj   +1 more source

Current and Future Prospects of Nitro-compounds as Drugs for Trypanosomiasis and Leishmaniasis [PDF]

open access: yes, 2018
Interest in nitroheterocyclic drugs for the treatment of infectious diseases has undergone a resurgence in recent years. Here we review the current status of monocyclic and bicyclic nitroheterocyclic compounds as existing or potential new treatments for ...
Alan H. Fairlamb   +141 more
core   +2 more sources

A 100 kHz time-resolved multiple-probe femtosecond to second infrared absorption spectrometer [PDF]

open access: yes, 2016
We present a dual-amplifier laser system for time-resolved multiple-probe infrared (IR) spectroscopy based on the ytterbium potassium gadolinium tungstate (Yb:KGW) laser medium.
Clark, Ian P.   +7 more
core   +1 more source

Identification of Novel Class of Triazolo-Thiadiazoles as Potent Inhibitors of Human Heparanase and their Anticancer Activity

open access: yesBMC Cancer, 2017
Background Expression and activity of heparanase, an endoglycosidase that cleaves heparan sulfate (HS) side chains of proteoglycans, is associated with progression and poor prognosis of many cancers which makes it an attractive drug target in cancer ...
C. P. Baburajeev   +9 more
doaj   +1 more source

Poly(2-oxazolines) in biological and biomedical application contexts. [PDF]

open access: yes, 2007
Polyoxazolines of various architectures and chemical functionalities can be prepared in a living and therefore controlled manner via cationic ring-opening polymerisation.
Adams, Nico, Schubert, Ulrich S
core   +1 more source

Surface Percolation and Growth. An alternative scheme for breaking the diffraction limit in optical patterning

open access: yes, 2009
A nanopatterning scheme is presented by which the structure height can be controlled in the tens of nanometers range and the lateral resolution is a factor at least three times better than the point spread function of the writing beam.
Kunik, D.   +2 more
core   +2 more sources

Metabolite profiling of non-sterile rhizosphere soil [PDF]

open access: yes, 2017
Rhizosphere chemistry is the sum of root exudation chemicals, their breakdown products and the microbial products of soil-derived chemicals. To date, most studies about root exudation chemistry are based on sterile cultivation systems, which limits the ...
Cotton, A.   +5 more
core   +3 more sources

Oxazines: A New Class of Second-Order Nonlinear Optical Switches

open access: yesJournal of the American Chemical Society, 2016
A combined experimental-theoretical investigation has revealed that oxazine-based compounds are multiaddressable, multistate, and multifunctional molecular switches exhibiting contrasts of both linear and second-order nonlinear optical properties. The switching properties are particularly large when the substituent is a donor group.
Beaujean, Pierre   +8 more
openaire   +2 more sources

Synthesis of rigid p-terphenyl-linked carbohydrate mimetics

open access: yesBeilstein Journal of Organic Chemistry, 2014
An approach to β-D-2-aminotalose- and β-D-2-aminoidose-configured carbohydrate mimetics bearing a phenyl substituent is described. Unnatural divalent rigid p-terphenyl-linked C-aryl glycosides with 2.0 nm dimension are available using Suzuki cross ...
Maja Kandziora, Hans-Ulrich Reissig
doaj   +1 more source

5′-Nitro-1,4-dihydrospiro[3,1-benzoxazine-2,3′-indolin]-2′-one

open access: yesIUCrData, 2018
In the title compound, C15H11N3O4, the six-membered oxazine ring adopts a half-chair conformation and is oriented at an angle of 78.63 (9)° with respect to the pyrrolidine ring of the indoline ring system, which adopts an envelope conformation. The spiro
Y. AaminaNaaz   +3 more
doaj   +1 more source

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