Results 51 to 60 of about 103,057 (335)

S‐Acyl and N‐Acyl Derivatives of Benzothiazole‐2‐thiol: An Example of Acyl Group Rearrangement. [PDF]

ChemInform, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Joung Hee Lee, Hyosun Lee, Sang-Hyun Park   +2 more
openaire   +3 more sources

Selective acylation of chitosan oligomers by several cyclic anhydrides as a 13C NMR quantification method

Carbohydrate Polymer Technologies and Applications
The chemistry of chitosan is a promising way to afford biobased and biodegradable complex materials using highly reactive compounds such as anhydrides. However, the potential applications are limited due to the absence of control over the acylation and ...
Paul Morandi, Steve Berthalon, Ghislain David, Aurelien Lebrun, Karine Parra, Claire Negrell   +5 more
doaj   +1 more source

N-acylation of ethanolamine using lipase: a chemoselective catalyst

Beilstein Journal of Organic Chemistry, 2009
The N-acylation of ethanolamine (2) with various fatty acids 1a–d and esters of fatty acids 1e–h using Candida antarctica B lipase (Novozym® 435) are described and optimum conditions for selective N-acylation rather than O-acylation are also discussed ...
Mazaahir Kidwai, Roona Poddar, Poonam Mothsra   +2 more
doaj   +1 more source

Four Routes to 3-(3-Methoxy-1,3-dioxopropyl)pyrrole, a Core Motif of Rings C and E in Photosynthetic Tetrapyrroles

Molecules, 2023
The photosynthetic tetrapyrroles share a common structural feature comprised of a β-ketoester motif embedded in an exocyclic ring (ring E). As part of a total synthesis program aimed at preparing native structures and analogues, 3-(3-methoxy-1,3 ...
Khiem Chau Nguyen, Anh Thu Nguyen Tran, Pengzhi Wang, Shaofei Zhang, Zhiyuan Wu, Masahiko Taniguchi, Jonathan S. Lindsey   +6 more
doaj   +1 more source

A truncated lipoglycan from mycobacteria with altered immunological properties [PDF]

, 2010
Maintenance of cell-wall integrity in Mycobacterium tuberculosis is essential and is the target of several antitubercular drugs. For example, ethambutol targets arabinogalactan and lipoarabinomannan (LAM) biosynthesis through the inhibition of several ...
Alderwick, Luke J., Appelmelk, B. J., Besra, Gurdyal S, Bhatt, Apoorva, Birch, Helen, Eggeling, Lothar, Geurtsen, J, Maaskant, J, Nigou, Jerome, Singh, Albel   +9 more
core   +2 more sources

Interplay between RNA‐protein interactions and RNA structures in gene regulation

FEBS Open Bio, EarlyView.
Methodological advances in mapping transcriptome‐wide RNA‐protein interactions and RNA structures have started to uncover the potential of RNP conformations in gene regulation. Competing RNA–RNA, RNA‐protein and protein–protein interactions shape the compaction and function of RNPs throughout their lifetime and may provide novel therapeutic targets in ...
Jenni Rapakko, Mauro Scaravilli, Minna‐Liisa Änkö   +2 more
wiley   +1 more source

(2R,6′R,E)-3′-(1-Aminoethylidene)-7-chloro-4,6-dimethoxy-6′-methyl-3H-spiro[benzofuran-2,1′-cyclohexane]-2′,3,4′-trione

Molbank, 2023
A novel synthesis approach for griseofulvin derivatives was developed. The presented method is based on a two-stage process that includes preliminary acetylation of griseofulvic acid followed by condensation with ammonium acetate.
Boris V. Lichitsky, Andrey N. Komogortsev, Valeriya G. Melekhina   +2 more
doaj   +1 more source

Preparation of Translationally Competent tRNA by Direct Chemical Acylation [PDF]

, 2010
Nonsense codon suppression for unnatural amino acid incorporation requires the preparation of a suppressor aminoacyl-tRNA. Chemical acylation strategies are general but inefficient and arduous. A recent report (J. Am. Chem. Soc.
Dougherty, Dennis A., Duffy, Noah H.
core   +2 more sources

Functionalized Lignin Derivatives as Melt‐Spinnable Precursors for Carbon Fiber Production without Stabilization

Advanced Functional Materials, EarlyView.
By turning off hydrogen bonds by bulky ethyl cinnamate ester derivatization, softwood kraft lignin can flow under elevated temperatures, providing tough fiber in the melt for high take‐up speed. Subsequently, lignin ethyl cinnamate derivatives are readily stabilized with only dilute nitric acid leading to direct carbonized fiber with outstanding ...
Qi Hua, Muzaffer A. Karaaslan, Zhixin Huang, Lingyan Fang, Jie Wu, Huaiyu Zhang, Yuhang Ye, Yasmine Abdin, Scott Renneckar   +8 more
wiley   +1 more source

Methyl 9-(1-methyl-1H-indol-3-yl)-9-oxononanoate

Molbank, 2023
Methyl 9-(1-methyl-1H-indol-3-yl)-9-oxononanoate was synthesized using Friedel–Crafts acylation between N-methyl indole and methyl 9-chloro-9-oxononanoate.
Gabriele Micheletti, Carla Boga
doaj   +1 more source