Results 11 to 20 of about 162,728 (193)

The derivation of the formyl-group oxygen of chlorophyll b in higher plants from molecular oxygen. [PDF]

open access: yes, 1994
The mechanism of formation of the formyl group of chlorophyll b has long been obscure but, in this paper, the origin of the 7-formyl-group oxygen of chlorophyll b in higher plants was determined by greening etiolated maize leaves, excised from dark-grown
Abraham R. J.   +27 more
core   +1 more source

The Anti-HIV Actions of 7- and 10-Substituted Camptothecins

open access: yesMolecules, 2009
Camptothecin (CPT), a traditional anti-tumor drug, has been shown to possess anti-HIV-1 activity. To increase the antiviral potency, the anti-HIV activities of two CPT derivatives, 10-hydroxy-CPT and 7-hydroxymethyl-CPT, were evaluated in vitro.
Yu-Ye Li   +5 more
doaj   +1 more source

Synthesis, Chemistry and Applications of 5-Hydroxymethyl-furfural And Its Derivatives [PDF]

open access: yes, 2001
The prospect of exciting research activity in the chemistry of furfural derived compounds such as 5-hydroxymethylfurfural (HMF), 2,5-furandicarbaldehyde and 2,5-furan-dicarboxylic acid prompted the writing of this article.
Lewkowski, Jarosław
core   +1 more source

Crystal structure of poly[[μ-4-(hydroxymethyl)pyridine-κ2N:O][4-(hydroxymethyl)pyridine-κN](μ-thiocyanato-κ2N:S)(thiocyanato-κN)cadmium]

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
The crystal structure of the title compound, [Cd(NCS)2(C6H7NO)2]n is made up of Cd2+ cations that are coordinated by three thiocyanate ligands and three 4-(hydroxymethyl)pyridine ligands within distorted N4OS octahedra.
Julia Werner   +2 more
doaj   +1 more source

Synthesis of racemic and chiral BEDT-TTF derivatives possessing hydroxy groups and their achiral and chiral charge transfer complexes [PDF]

open access: yes, 2015
Chiral molecular crystals built up by chiral molecules without inversion centers have attracted much interest owing to their versatile functionalities related to optical, magnetic, and electrical properties.
Hashimoto, C   +6 more
core   +3 more sources

A Validated 1H NMR Method for the Quantitation of 5-Hydroxymethyl-2(5H)-Furanone, a Valuable Chemical Intermediate, In a Dichloromethane Extract of Helleborus lividus subsp: Corsicus Leaves from Corsica

open access: yesJournal of Analytical Methods in Chemistry, 2022
An experimental procedure using 1H NMR was developed and validated to quantify 5-hydroxymethyl-2(5H)-furanone, a valuable chemical synthon ((S)-enantiomer), in a dichloromethane extract of Helleborus lividus subsp. corsicus leaves.
Thomas Maroselli   +2 more
doaj   +1 more source

1-hydroxymethyl Harmine-TGFβSF Inhibitor: Inovasi Terapi Diabetes Melitus Terbaru Melalui Inisiasi Proses Regenerasi Sel β Pankreas pada Penderita DM Tipe 1 dan 2

open access: yesScripta Score Scientific Medical Journal, 2021
Background: Type 1 and 2 diabetes mellitus (DM) is a chronic metabolic disease most commonly affects millions of people worldwide. Despite the differences in pathogenesis, both share one thing in common - that is the drastic depletion in the number of ...
Ghea Mangkuliguna   +2 more
doaj   +1 more source

Highly-functionalised difluorinated cyclohexane polyols via the Diels–Alder reaction : regiochemical control via the phenylsulfonyl group [PDF]

open access: yes, 2005
A difluorinated dienophile underwent cycloaddition reactions with a range of furans to afford cycloadducts whichcould be processed regio- and stereoselectively via episulfonium ions, generated by the reaction between their alkenyl groups and ...
Crowley, Patrick J   +5 more
core   +1 more source

Three New Phytoecdysteroids Containing a Furan Ring from the Roots of Achyranthes bidentata Bl.

open access: yesMolecules, 2011
Three new phytoecdysteroid compounds, named niuxixinsterone A (1), B (2) and C (3) with acetal functions in the side-chain were isolated from Achyranthes bidentata Bl.
Liu Yang   +5 more
doaj   +1 more source

Synthesis of enantiomeric polyhydroxyalkylpyrrolidines from 1,3-dipolar cycloadducts. Evaluation as inhibitors of a β-galactofuranosidase [PDF]

open access: yes, 2016
Enantiomeric 2,3,4-tris(hydroxyalkyl)-5-phenylpyrrolidines have been synthesized from the major cycloadducts obtained by the 1,3-dipolar cycloaddition of sugar enones with azomethine ylides derived from natural amino acids.
Oliveira Udry, Guillermo Alejandro   +3 more
core   +2 more sources

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