Accelerated Synthesis of Surface Functionalized Mannosylated Dendrimers Built on Cyclotriphosphazene Core

MRS Advances ◽  
2019 ◽  
Vol 4 (59-60) ◽  
pp. 3187-3198
Author(s):  
Lamyaa M. Sallam ◽  
Tze Chieh Shiao ◽  
Celia Sehad ◽  
Abdelkrim Azzouz ◽  
René Roy
Keyword(s):  
Click Reaction ◽  
Core Structure ◽  
Surface Groups ◽  
The Core ◽  
Onion Peel ◽  
Highly Efficient

ABSTRACTThe syntheses of five propargylated dendrimer scaffolds ranging from 2, 3, 4, 6, and 12 surface groups are described together with a 2-azidoethyl α-D-mannopyranoside. The former is appended to the core structure using highly efficient copper-catalysed azide-alkyne cycloaddition (CuAAC) (“click reaction”) to provide glycodendrimers in an accelerated approach. Two of the core structures are based on cyclotrisphosphazene, thus expanding the scope of the “onion-peel” strategy to build dendritic architectures with a large number of surface groups at the G1 generation only.

scholarly journals Efficient synthesis of bis(indolyl)methanes by the alkylation of indoles with alcohols using heterogeneous CuFe2O4 catalyst

2021 ◽  
Vol 10 (3) ◽  
pp. 98-104
Author(s):  
Tuan Ha Minh ◽  
Yen Bui Hoang ◽  
Khanh Nguyen Ngoc ◽  
Thuan Ngo Thi ◽  
Hung Tran Quang ◽  
...  
Keyword(s):  
Natural Products ◽  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Core Structure ◽  
Efficient Synthesis ◽  
Active Compounds ◽  
The Core ◽  
Highly Efficient ◽  
Pharmacologically Active ◽  
Pharmacologically Active Compounds

Bis(3-indolyl)methanes (BIM) are highly valuable and appear in the core structure of many natural products and pharmacologically active compounds (anticancer, anti-inflammatory, antiobesity, antimetastatic, antimicrobial, etc.). Herein, we have disclosed an air stable and highly efficient CuFe2O4 heterogeneous catalyst for alkylation of indoles with alcohols to give bis(3-indolyl)methanes in very good yields. The CuFe2O4 catalyst has been found to be magnetically recycled at least five times without losing significant catalytic activity.

Indexicality of Grammar: The Case of Japanese Transgender Speakers

2019 ◽  
Author(s):  
Hideko Abe
Keyword(s):  
Gender Identity ◽  
Gender Identity Disorder ◽  
Grammatical Gender ◽  
Core Structure ◽  
Subject Positions ◽  
Transgender Identity ◽  
The Core ◽  
History Of ◽  
History Of Scholarship ◽  
Grammatical Structures

This article discusses how the intersection of grammatical gender and social gender, entwined in the core structure of language, can be analyzed to understand the dynamic status of selfhood. After reviewing a history of scholarship that demonstrates this claim, the discussion analyzes the language practices of transgender individuals in Japan, where transgender identity is currently understood in terms of sei-dōitsusei-shōgai (gender identity disorder). Based on fieldwork conducted between 2011 and 2017, the analysis reveals how individuals identifying with sei-dōitsusei-shōgai negotiate subject positions by manipulating the specific indexical meanings attached to grammatical structures.

Solvent-free and efficient synthesis of bicyclic 2-pyridone derivatives for endoplasmic reticulum imaging

2021 ◽  
Author(s):  
Xiaoyun Ran ◽  
Qian Zhou ◽  
Jin Zhang ◽  
Shanqiang Wang ◽  
Gui Wang ◽  
...  
Keyword(s):  
Endoplasmic Reticulum ◽  
Citric Acid ◽  
Core Structure ◽  
Solvent Free ◽  
Efficient Synthesis ◽  
The Core ◽  
Catalyst Free ◽  
Synthesis Approach ◽  
Ethylenediamine Derivatives

Started from citric acid (CA) and ethylenediamine derivatives, a solvent-free, catalyst-free and highly yield synthesis approach for bicyclic 2-pyridones was presented. Continuing to modify the core structure, a series of...

scholarly journals The Core Structure and Immunological Activities of Glycyrrhizan UA, the Main Polysaccharide from the Root of Glycyrrhiza uralensis.

1992 ◽  
Vol 40 (8) ◽  
pp. 2125-2128 ◽  
Author(s):  
Noriko SHIMIZU ◽  
Masashi TOMODA ◽  
Katsutoshi TAKADA ◽  
Ryoko GONDA
Keyword(s):  
Core Structure ◽  
Glycyrrhiza Uralensis ◽  
The Core

scholarly journals Lead cleavage sites in the core structure of group I intron-RNA

1993 ◽  
Vol 21 (2) ◽  
pp. 311-317 ◽  
Author(s):  
Barbara Striecjer ◽  
Uwe von Ahsen ◽  
Renée Schroeder
Keyword(s):  
Group I Intron ◽  
Core Structure ◽  
Cleavage Sites ◽  
The Core ◽  
Group I

scholarly journals Evaluation of Aberration-corrected Optical Sectioning for Exploring the Core Structure of ½[111] Screw Dislocations in BCC Metals

2017 ◽  
Vol 23 (S1) ◽  
pp. 432-433
Author(s):  
D. Hernandez-Maldonado ◽  
R. Groger ◽  
Q. M. Ramasse ◽  
P. B. Hirsch ◽  
P.D. Nellist
Keyword(s):  
Core Structure ◽  
Optical Sectioning ◽  
Screw Dislocations ◽  
The Core ◽  
Bcc Metals ◽  
Aberration Corrected
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