Results 11 to 20 of about 818,628 (334)

Characterization of Cysteine Cathepsin Expression in the Central Nervous System of Aged Wild-Type and Cathepsin-Deficient Mice

open access: yesApplied Sciences, 2022
The association of cathepsin proteases in neurobiology is increasingly recognized. Our previous studies indicated that cathepsin-K-deficient (Ctsk−/−) mice have learning and memory impairments.
Denise M. T. Yu   +6 more
doaj   +1 more source

A Unified Mechanism on the Formation of Acenes, Helicenes, and Phenacenes in the Gas Phase. [PDF]

open access: yes, 2020
A unified low-temperature reaction mechanism on the formation of acenes, phenacenes, and helicenes-polycyclic aromatic hydrocarbons (PAHs) that are distinct via the linear, zigzag, and ortho-condensed arrangements of fused benzene rings-is revealed. This
Ablikim, Utuq   +8 more
core   +1 more source

Oxetanes: Recent Advances in Synthesis, Reactivity and Medicinal Chemistry [PDF]

open access: yes, 2016
The 4-membered oxetane ring has been increasingly exploited for its behaviors, i.e. influence on physicochemical properties as a stable motif in medicinal chemistry, and propensity to undergo ring opening reactions as a synthetic intermediate.
Bull, JA   +4 more
core   +1 more source

Efficient ring perception for the Chemistry Development Kit [PDF]

open access: yesJournal of Cheminformatics, 2014
The Chemistry Development Kit (CDK) is an open source Java library for manipulating and processing chemical information. A key aspect in handling chemical structures is the determination of the chemical rings. The rings of a structure are used areas including descriptors, stereochemistry, similarity, screening and atom typing. The CDK includes multiple
Christoph Steinbeck, John W. May
openaire   +2 more sources

Synthesis and Catalysis

open access: yesCHIMIA, 2010
Research projects of the Department of Chemistry, University of Basel are reviewed ranging from the synthesis of complex natural products to the development of metalorganic catalysts and organocatalysts
Karl Gademann   +5 more
doaj   +1 more source

Ringing the changes in chemistry [PDF]

open access: yesNature, 1985
Comprehensive Heterocyclic Chemistry: The Structure, Reactions, Synthesis and Uses of Heterocyclic Compounds. Chairmen of the editorial board Alan R. Katritzky and Charles W. Rees. Pergamon: 1984. Eight volumes. 1375, 2200.
openaire   +2 more sources

Trace Amine-Associated Receptor 1 Trafficking to Cilia of Thyroid Epithelial Cells

open access: yesCells, 2021
Trace amine-associated receptor 1 (rodent Taar1/human TAAR1) is a G protein-coupled receptor that is mainly recognized for its functions in neuromodulation.
Maria Qatato   +8 more
doaj   +1 more source

Molecular line emission in NGC1068 imaged with ALMA: II. The chemistry of the dense molecular gas [PDF]

open access: yes, 2014
We present a detailed analysis of ALMA Bands 7 and 9 data of CO, HCO+, HCN and CS, augmented with Plateau de Bure Interferometer (PdBI) data of the ~ 200 pc circumnuclear disk (CND) and the ~ 1.3 kpc starburst ring (SB ring) of NGC~1068, a nearby (D = 14
Aalto, S.   +21 more
core   +2 more sources

Strain Release Chemistry of Photogenerated Small‐Ring Intermediates [PDF]

open access: yesChemistry – A European Journal, 2021
AbstractPhotochemical processes, such as isomerizations and cycloadditions, have proven to be very useful in the construction of highly strained molecular frameworks. Photoinduced ring strain enables subsequent exergonic reactions which do not require the input of additional chemical energy and provides a variety of attractive synthetic options leading
Adriana Luque, Jan Paternoga, Till Opatz
openaire   +4 more sources

The Cu(OTf)2 catalysed microwave assisted synthesis of a new scaffold, 7-aryl-7,8-dihydropyrido[4,3-c]pyridazin-5(6H)-one [PDF]

open access: yes, 2014
The synthesis of novel 7-aryl-7,8-dihydropyrido[4,3-c]pyridazin-5(6H)-ones is described including a one-step Mannich-type reaction followed by intramolecular ring closure of ethyl 3-methylpyridazine-4- carboxylate and aldimines, catalysed by the Lewis ...
De Coen, Laurens   +5 more
core   +2 more sources

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