Results 31 to 40 of about 17,975 (276)

Electrochemistry of potential bioreductive alkylating quinones : Part 2. Electrochemical properties of 2,5-bis(1-aziridinyl)-3,6-bis(ethoxycarbonylamino)-1,4-benzoquinone and some model compounds [PDF]

open access: yes, 1990
The reduction mechanism of 2,5-bis(1-aziridinyl)-3,6-bis(ethoxycarbonylamino)-1,4-benzoquinone (Diaziquone, AZQ) and several model compounds of the mono- and bis(1-aziridinyl)quinone type at the dropping mercury electrode in aqueous solutions was studied.
Blauw, J.S.   +6 more
core   +2 more sources

Synthesis and reactivity of 4-(trifluoromethyl)azetidin-2-ones [PDF]

open access: yes, 2018
Because of the beneficial effect of a trifluoromethyl group on the biological properties of bioactive compounds on the one hand and the versatile synthetic potential of beta-lactams on the other hand, 4-CF3-beta-lactams comprises interesting entities for
D'hooghe, Matthias   +2 more
core   +1 more source

First-Principles Study of Chemisorption of Oxygen and Aziridine on Graphitic Nanostructures [PDF]

open access: yes, 2009
Using ab initio plane wave pseudopotential calculations, we study the energetics and structure of adsorbed linear arrays of oxygen and aziridine on carbon nanotubes, graphitic ribbons, and graphene sheets.
Giapis, Konstantinos P., Kutana, Alex
core   +2 more sources

Atom Economical Multi-Substituted Pyrrole Synthesis from Aziridine

open access: yesMolecules, 2022
Multi-substituted pyrroles are synthesized from regiospecific aziridine ring-opening and subsequent intramolecular cyclization with a carbonyl group at the γ-position in the presence of Lewis acid or protic acid.
Lingamurthy Macha   +3 more
doaj   +1 more source

Investigation of macrocyclisation routes to 1,4,7-triazacyclononanes : efficient syntheses from 1,2-ditosylamides [PDF]

open access: yes, 2008
Two routes to the synthesis of a cyclohexyl-fused 1,4,7-triazacyclononane involving macrocyclisations of tosamides have been investigated. In the first approach, using a classic Richman-Atkins-type cyclisation of a cyclohexyl-substituted 1,4,7 ...
Gibson, C.L.   +6 more
core   +1 more source

Rapid, direct, and sensitive determination of aziridine and 2-chloroethylamine by hydrophilic interaction liquid chromatography-mass spectrometry

open access: yesMethodsX, 2019
A rapid HILIC-MS method was developed for measuring the genotoxic impurities aziridine and 2-chloroethylamine. Sample preparation was simple and direct without requiring derivatization.
Jonathan G. Shackman
doaj   +1 more source

Aromatic sulphonamides of aziridine-2-carboxylic acid derivatives as novel PDIA1 and PDIA3 inhibitors

open access: yesJournal of Enzyme Inhibition and Medicinal Chemistry, 2023
In this study, we report a series of newly synthesised sulphonamides of aziridine-2-carboxylic acid (Az-COOH) ester and amide analogues as potent protein disulphide isomerase (PDI, EC 5.3.4.1) inhibitors.
D. Zelencova-Gopejenko   +12 more
doaj   +1 more source

Microwave-assisted regioselective ring opening of non-activated aziridines by lithium aluminium hydride [PDF]

open access: yes, 2010
A new synthetic protocol for the LiAlH4-promoted reduction of non-activated aziridines under microwave conditions was developed. Thus, ring opening of 2-(acetoxymethyl)aziridines provided the corresponding beta-amino alcohols, which were then used as ...
D'hooghe, Matthias   +2 more
core   +1 more source

Chemoenzymatic Synthesis of Triazololactams Structurally Related to Pancratistatin [PDF]

open access: yes, 2017
Four tricyclic lactams that structurally resemble alkaloids with the pancratistatin skeleton were synthetized from bromobenzene by a chemoenzymatic strategy.
Bastida   +48 more
core   +1 more source

Concise Synthesis of (+)-allo-Kainic Acid via MgI2-Mediated Tandem Aziridine Ring Opening-Formal [3+2] Cycloaddition [PDF]

open access: yes, 2013
3-Methyl vinyl aziridine undergoes a mild MgI2-promoted S(N)2' ring opening and concomitant cyclization with fumarate Michael acceptors to give trisubstituted pyrrolidines. The process is efficient and highly diastereoselective. This methodology has been
Aggarwal, Varinder K.   +3 more
core   +1 more source

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