Results 21 to 30 of about 1,147 (142)

Plant-Derived Triterpenoid Functionalization: Synthesis of α-Acyloxycarboxamides

Chemistry Proceedings, 2023
The application of isocyanide-based multicomponent reactions (IMCRs) for triterpenoid functionalization has been little reported. Triterpenoids and their derivatives are an important class of natural products of interest in medicinal chemistry due to ...
Fidel Rodriguez-Lopez, Edgar G. Rodríguez-García, Hugo A. García-Gutiérrez, Rocío Gámez-Montaño   +3 more
doaj   +1 more source

Synthesis of structurally diverse 3,4-dihydropyrimidin-2(1H)-ones via sequential Biginelli and Passerini reactions

Beilstein Journal of Organic Chemistry, 2017
The Biginelli reaction was combined with the Passerini reaction for the first time in a sequential multicomponent tandem reaction approach. After evaluation of all possible linker components and a suitable solvent system, highly functionalized ...
Andreas C. Boukis, Baptiste Monney, Michael A. R. Meier   +2 more
doaj   +1 more source

Phosphonanaloga von Aminosäuren und Peptiden: Synthese der Phosphonanaloga von Depsipeptiden mittels der Passerini-Reaktion.

CHIMIA, 1983
Synthesis of phosphorous analogues of tri- and tetra-depsipeptides 4 involving the Passerini reaction of diethylisocyanmethylphosphonate 3 with carbonyl compounds 2 and N-protected glycine 1 is reported.
Janusz Rachoń
doaj   +1 more source

Green synthesis, crystal structure, and antifungal activities of (E)-4-arylidene-5-oxotetrahydrofuran

Frontiers in Chemistry, 2022
A series of γ-lactone derivatives (E)-4-arylidene-5-oxotetrahydrofuran derivatives were synthesized via a tandem Passerini 3CC/SN cyclization microwave-assisted one-pot method efficiently starting from Baylis Hillman acids, aryl glyoxals and isocyanides,
Yun Dong, Yun Dong, Ling-Qi Kong, Ling-Qi Kong, Qin-Hua Chen, Bin Li, Xiao-Hua Zeng, Xiao-Hua Zeng, Li-Na Ke, Li-Na Ke, Hong-Mei Wang, Hong-Mei Wang   +11 more
doaj   +1 more source

Efficient Synthesis of Boron-Containing α-Acyloxyamide Analogs via Microwave Irradiation

Molecules, 2013
In this report, a Passerini three-component reaction utilizing boron-containing carboxylic acids or aldehydes is discussed. The reaction was carried out in water and facilitated by the use of microwave irradiation.
Po-Shen Pan, Fang-Rong Chang, Chia-Hung Lin, Hsien-Chi Chen, Yang-Chang Wu, Pin-Yi Liu, Chih-Cheng Chai   +6 more
doaj   +1 more source

Protection-Free Strategy for the Synthesis of Boro-Depsipeptides in Aqueous Media under Microwave-Assisted Conditions

Molecules, 2022
In this report, 19 boron-containing depsipeptides were synthesized via microwave-assisted Passerini three-component reaction (P-3CR) in an aqueous environment.
Shuo-Bei Qiu, Pei-Yao Liu, Bo-Cheng Wang, Pin-Rui Chen, Jing-Han Xiao, Ting-Yu Hsu, Kuan-Lin Pan, Zhi-Yin Lai, Yi-Wei Chen, Ying-Chuan Chen, Jen-Kun Chen, Po-Shen Pan   +11 more
doaj   +1 more source

Passerini Reactions on Biocatalytically Derived Chiral Azetidines [PDF]

Molecules, 2016
The purpose of this study was to explore a series of Passerini reactions on a biocatalytically derived enantiopure azetidine-2-carboxyaldehyde in order to obtain, in a diastereoselective manner, polyfunctionalised derivatives having the potential to be cyclized to chiral bridged bicyclic nitrogen heterocycles.
MONI, LISA, BANFI, LUCA, BASSO, ANDREA, Bozzano, A, SPALLAROSSA, MARTINA, Wessjohann, L., RIVA, RENATA   +6 more
openaire   +3 more sources

Pyrrolidinodiones in Enol-Ugi, Enol-Passerini, and Anomalous Enol-Passerini Condensations

Proceedings, 2019
In continuation of our recent research on the development of novel multicomponent reactions with isocyanides, we have used, for the first time, enols as the acid components in Ugi- and Passerini-type reactions. Thus, electron-poor pyrrolidinodiones react
Ana G. Neo, Carlos F. Marcos
doaj   +1 more source

Preparation and Self-Assembly of pH-Responsive Hyperbranched Polymer Peptide Hybrid Materials

Nanomaterials, 2023
In recent years, the coupling of structurally and functionally controllable polymers with biologically active peptide materials to obtain polymer-peptide hybrids with excellent properties and biocompatibility has led to important research progress in the
Yan Qin, Jianguo Yi, Yue Zhang
doaj   +1 more source

Potential Aphid (Hemiptera: Aphididae) Vectors of Plum-pox Virus (Virus:Potyviridae) and Status of Sharka Disease in Stone Fruit Orchards in the East Mediterranean Region of Turkey

Journal of Agricultural Sciences, 2021
This study was conducted in stone fruit orchards in five provinces of the East Mediterranean Region of Turkey between the years of 2009-2011. The aim of the study was to determine the potential aphid vectors of the quarantine pathogen PPV (plum pox virus,
Melike Yurtmen, Hakan Fidan, Adalet Hazır   +2 more
doaj   +1 more source