ChemInform Abstract: The Selective Activation of Telluro- over Seleno-β-D- glucopyranosides as Glycosyl Donors: A Reactivity Scale for Various Telluro, Seleno, and Thio Sugars.

ChemInform ◽  
2010 ◽  
Vol 28 (35) ◽  
pp. no-no
Author(s):  
R. V. STICK ◽  
D. M. G. TILBROOK ◽  
S. J. WILLIAMS
Keyword(s):  
Selective Activation ◽  
Glycosyl Donors

The Selective Activation of Telluro- over Seleno-β-D-glucopyranosides as Glycosyl Donors: a Reactivity Scale for Various Telluro, Seleno and Thio Sugars

1997 ◽  
Vol 50 (3) ◽  
pp. 237 ◽  
Author(s):  
Robert V. Stick ◽  
D. Matthew G. Tilbrook ◽  
Spencer J. Williams
Keyword(s):  
Trifluoromethanesulfonic Acid ◽  
Selective Activation ◽  
The One ◽  
Glycosyl Donors

Phenyl tetra-O-benzoyl-1-telluro-β-D-glucopyranoside, when treated with 1,2:3,4-di-O-isopropylidene-α-D-galactose in the presence of N-iodosuccinimide and trifluoromethanesulfonic acid, immediately forms the expected β-disaccharide derivative. A subsequent experiment involving both a telluroglycoside and a selenoglycoside as donors with the one alcohol acceptor showed complete preference for the telluroglycoside. This result has led to an extension of the investigation to establish a ‘reactivity scale’ for various telluro, seleno and thio sugars.

Ubiquinone-BODIPY nanoparticles for tumor redox-responsive fluorescence imaging and photodynamic activity

2021 ◽  
Author(s):  
Byunghee Hwang ◽  
Tae-Il Kim ◽  
Hyunjin Kim ◽  
Sungjin Jeon ◽  
Yongdoo Choi ◽  
...  
Keyword(s):  
Fluorescence Imaging ◽  
Selective Activation ◽  
Turn On ◽  
Intracellular Environment ◽  
Redox Responsive ◽  
Photodynamic Activity

A ubiquinone-BODIPY photosensitizer self-assembles into nanoparticles (PS-Q-NPs) and undergoes selective activation within the highly reductive intracellular environment of tumors, resulting in “turn-on” fluorescence and photosensitizing activities.

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