Results 101 to 110 of about 174,911 (284)

Functional characterization of synthetic leukotriene B and its stereochemical isomers. [PDF]

open access: yes, 1981
Leukotriene B (LTB), a potent lipid chemotactic factor for neutrophils, is 5S,12R-dihydroxy-6,14-cis,8,10-trans-eicosatetraenoic acid (Fig 1), based upon direct comparison of natural LTB with synthetic 5S,12R-dihydroxy-6,8,10,14-eicosatetraenoic acid (5 ...
Austen, K   +5 more
core   +1 more source

A detailed view on 1,8-cineol biosynthesis by Streptomyces clavuligerus

open access: yesBeilstein Journal of Organic Chemistry, 2016
The stereochemical course of the cyclisation reaction catalysed by the bacterial 1,8-cineol synthase from Streptomyces clavuligerus was investigated using stereospecifically deuterated substrates.
Jan Rinkel   +3 more
doaj   +1 more source

Synthesis of cyclopropyl-substituted furans by Brønsted acid promoted cascade reactions [PDF]

open access: yes, 2015
Chloroacetic acid promotes an efficient and diastereoselective intramolecular cascade reaction of electron-deficient ynenones to deliver products featuring a 2,3,5-trisubstituted furan bearing a fused cyclopropyl substituent at the 5-position ...
Achmatowicz   +46 more
core   +2 more sources

Chemical Synthesis of the Lantibiotic Lacticin 481 Reveals the Importance of Lanthionine Stereochemistry

open access: yesJournal of the American Chemical Society, 2013
Lantibiotics are a family of antibacterial peptide natural products characterized by the post-translational installation of the thioether-containing amino acids lanthionine and methyllanthionine.
P. Knerr, W. A. van der Donk
semanticscholar   +1 more source

Synergistic Anti-Candida Activity of Bengazole A in the Presence of Bengamide A †. [PDF]

open access: yes, 2019
Bengazoles A⁻G from the marine sponge Jaspis sp. exhibit potent in vitro antifungal activity against Candida spp. and other pathogenic fungi. The mechanism of action (MOA) of bengazole A was explored in Candida albicans under both liquid culture and ...
Cheng, Tina   +3 more
core  

Crystal structure, computational study, and Hirshfeld analysis of exo-1,2,3,5-tetraphenyl-1a',9b'-dihydrospiro[bicyclo[3.1.0]hexane-6,1′-cyclopropa[l]phenanthren]-2-en-4-one

open access: yesActa Crystallographica Section E: Crystallographic Communications
The reaction of dibenzonorcarynyliden(e/oid) with phencyclone was recently reported to give a congested spiropentane with endo stereochemistry. Herein we report that, in sharp contrast, an analogous reaction using tetracyclone, instead of phencyclone ...
Alexander D. Roth, Dasan M. Thamattoor
doaj   +1 more source

Stereochemical course of hydrolytic reaction catalyzed by alpha-galactosidase from cold adaptable marine bacterium of genus Pseudoalteromonas

open access: yesFrontiers in Chemistry, 2014
The recombinant α-galactosidase of the marine bacterium (α-PsGal) was synthesized with the use of the plasmid 40Gal, consisting of plasmid pET-40b (+) (Novagen) and the gene corresponding to the open reading frame of the mature α-galactosidase of marine ...
Irina Yu Bakunina   +6 more
doaj   +1 more source

Survey of Pharmacological Activity and Pharmacokinetics of Selected β-Adrenergic Blockers in Regard to Their Stereochemistry

open access: yesApplied Sciences, 2019
The present survey concentrates on pharmacodynamics and pharmacokinetics of selected β-adrenergic blockers from the point of view of their stereochemistry. It could be shown that the activity in the arylaminoethanol and aryloxyaminopropanol group of
Ružena Čižmáriková   +3 more
doaj   +1 more source

The Sequence of the Enterococcal Cytolysin Imparts Unusual Lanthionine Stereochemistry

open access: yesNature Chemical Biology, 2013
The enterococcal cytolysin is a two-component lantibiotic of unknown structure with hemolytic activity that is important for virulence. We prepared cytolysin by co-expression of each precursor peptide with the synthetase CylM in E.
Weixin Tang, W. A. van der Donk
semanticscholar   +1 more source

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