Results 41 to 50 of about 6,524 (258)

Stereodivergent Synthesis of Three Contiguous Stereogenic Centers by Cu/Ir‐Catalyzed Borylallylation

Angewandte Chemie, EarlyView.
An alkene borylallylation strategy enabled by cooperative Cu/Ir‐catalysis has been uncovered for accessing three contiguous stereogenic centres. This strategy is notable given the inherent challenges of constructing molecules with multiple stereocenters while maintaining high selectivity bearing diverse functional groups.
Suman Das, Stanna K. Dorn, M. Kevin Brown   +2 more
wiley   +2 more sources

Comparative Metabolite Fingerprinting of Four Different Cinnamon Species Analyzed via UPLC–MS and GC–MS and Chemometric Tools

Molecules, 2022
The present study aimed to assess metabolites heterogeneity among four major Cinnamomum species, including true cinnamon (Cinnamomum verum) and less explored species (C. cassia, C. iners, and C. tamala).
Mohamed A. Farag, Eman M. Kabbash, Ahmed Mediani, Stefanie Döll, Tuba Esatbeyoglu, Sherif M. Afifi   +5 more
doaj   +1 more source

Reactions of nitroxides 15. Cinnamates bearing a nitroxyl moiety synthesized using a Mizoroki–Heck cross-coupling reaction

Beilstein Journal of Organic Chemistry, 2015
Cinnamic acid derivatives bearing a nitroxyl moiety (2,2,6,6-tetramethyl-1-oxyl-4-piperidyl 3-E-aryl acrylates) were synthesized in 30–100% yield using a Mizoroki–Heck cross-coupling reaction between 4-acryloyloxy-2,2,6,6-tetramethylpiperidine-1-oxyl and
Jerzy Zakrzewski, Bogumiła Huras
doaj   +1 more source

The Plant Pathogenic Bacterium Streptomyces scabies Degrades the Aromatic Components of Potato Periderm via the β-Ketoadipate Pathway

Frontiers in Microbiology, 2019
The outer potato periderm layer consists of dead suberized cells. Suberin, a protective biopolymer, is made of a polyaliphatic portion covalently linked to polyaromatic moieties.
Mario Khalil, Mario Khalil, Sylvain Lerat, Nathalie Beaudoin, Carole Beaulieu   +4 more
doaj   +1 more source

Functionalization of 7-Hydroxy-pyranoflavylium: Synthesis of New Dyes with Extended Chromatic Stability

Molecules, 2022
This work reports the functionalization of pyranoflavyliums pigment using 1-(3-dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride coupling chemistry.
Ana Rita Pereira, Victor de Freitas, Nuno Mateus, Joana Oliveira   +3 more
doaj   +1 more source

Synthesis of Novel N-Substituted Dimethylmaleimidyl Esters and Their Applications as Plasticizers for Poly(Vinyl Chloride)

مجلة بغداد للعلوم, 2007
Three N-(hydroxylphenyl) dimethylmaleimides were directly prepared in good yields (81-86)% from the reaction of dimethylmaleic anhydride with amino phenols. The prepared imides were esterified to the corresponding benzoates, methacrylates and cinnamates
Baghdad Science Journal
doaj   +1 more source

Synthesis of Chondramide A Analogues with Modified β‐Tyrosine and Their Biological Evaluation [PDF]

, 2011
Starting from cinnamates 9 , obtained by Wittig reaction or Heck coupling, the diols 17 were prepared by asymmetric dihydroxylation. This was followed by a regioselective substitution of the 3‐OH group with hydrazoic acid under Mitsunobu conditions ...
Andavan, Arkin, Ashworth, Bai, Bubb, Chu, Crews, de Vries, Deechongkit, Dembinski, Diekmann, Eggert, Fry, Gala, Gala, Gala, Ghosh, Grieco, Haydar, Hirai, Hirai, Hu, Jansen, Ko, Kolb, Kunze, Lang, Lawrence, Liu, Loregian, Marimganti, Oda, Patel, Rao, Robinson, Schmauder, Schmauder, Staton, Swamy, Tannert, Tannert, Terracciano, Terracciano, Terracciano, Vintonyak, Waldmann, Waldmann, Watts, Zabriskie, Zampella, Zhang   +50 more
core   +1 more source

Synthesis and ring openings of cinnamate-derived N-unfunctionalised aziridines

Beilstein Journal of Organic Chemistry, 2012
tert-Butyl cinnamates are aziridinated with high trans-selectivity by an N–N ylide generated in situ from N-methylmorpholine and O-diphenylphosphinyl hydroxylamine.
Alan Armstrong, Alexandra Ferguson
doaj   +1 more source

2-Oxoglutarate-dependent dioxygenases in the biosynthesis of simple coumarins

Frontiers in Plant Science, 2014
Coumarins are natural plant products that have been the subject of extensive phytochemical and pharmacological research studies in the past few decades.
Bun-Ichi eShimizu
doaj   +1 more source

Esters of Cinnamic Acid as Green Plasticizers for Polylactide Formulations with Improved Ductility

Macromolecular Materials and Engineering, 2023
This study demonstrates the potential of different cinnamate esters, namely methyl trans‐cinnamate (MC), isobutyl cinnamate (IBC), allyl cinnamate (AC), and ethyl cinnamate (EC), as environmentally friendly plasticizers for polylactide (PLA). Plasticized
Alejandro Barandiaran, Jaume Gomez‐Caturla, Juan Ivorra‐Martinez, Diego Lascano, Miguel Angel Selles, Virginia Moreno, Octavio Fenollar   +6 more
doaj   +1 more source