One-Step, Regioselective Synthesis of up to 50-mers of RNA Oligomers by Montmorillonite Catalysis

2006 ◽  
Vol 128 (27) ◽  
pp. 8914-8919 ◽  
Author(s):  
Wenhua Huang ◽  
James P. Ferris
Keyword(s):  
Regioselective Synthesis ◽  
Rna Oligomers ◽  
One Step

One-Step Hetarylation of Steroids: Regioselective Synthesis of New Estrone Derivatives.

ChemInform ◽  
2006 ◽  
Vol 37 (37) ◽  
Author(s):  
Oleg N. Chupakhin ◽  
Dmitry G. Beresnev ◽  
Nadezhda A. Itsikson
Keyword(s):  
Regioselective Synthesis ◽  
One Step

Lipase-Catalyzed One-Step and Regioselective Synthesis of Clindamycin Palmitate

2013 ◽  
Vol 17 (9) ◽  
pp. 1179-1182 ◽  
Author(s):  
Zhixian Li ◽  
Yifei Zhang ◽  
Mengmeng Lin ◽  
Pingkai Ouyang ◽  
Jun Ge ◽  
...  
Keyword(s):  
Regioselective Synthesis ◽  
One Step

One-Step Synthesis of Indolizino[3,4,5-ab]isoindoles by Manganese(I)-Catalyzed C–H Activation: Structural Studies and Photophysical Properties

2022 ◽  
Author(s):  
Sara Cembellin ◽  
Ivan Maisuls ◽  
Constantin Gabriel Daniliuc ◽  
Helena Osthues ◽  
Nikos Doltsinis ◽  
...  
Keyword(s):  
Photophysical Properties ◽  
Regioselective Synthesis ◽  
Luminescence Properties ◽  
Structural Studies ◽  
Step Procedure ◽  
One Step

Herein, a regioselective synthesis of indolizino[3,4,5-ab]isoindoles (INIs), a valuable class of heterocycles with interesting luminescence properties, is described using manganese(I)-catalyzed C−H activation. The reported transformation proceeds in a one-step procedure...

One-step hetarylation of steroids: regioselective synthesis of new estrone derivatives

2006 ◽  
Vol 16 (2) ◽  
pp. 95-96 ◽  
Author(s):  
Oleg N. Chupakhin ◽  
Dmitry G. Beresnev ◽  
Nadezhda A. Itsikson
Keyword(s):  
Regioselective Synthesis ◽  
One Step

scholarly journals 7-Docosahexaenoyl-Quercetin

Molbank ◽  
10.3390/m1203 ◽  
2021 ◽  
Vol 2021 (2) ◽  
pp. M1203
Author(s):  
Sarah Mazzotta ◽  
Gabriele Carullo ◽  
Fabio Sciubba ◽  
Maria Enrica Di Cocco ◽  
Francesca Aiello
Keyword(s):  
Fatty Acids ◽  
1H Nmr ◽  
Short Note ◽  
Regioselective Synthesis ◽  
One Step ◽  
Therapeutic Tools ◽  
Pharmacologically Active ◽  
Derivatives Of

Fatty acids and polyphenols represent different classes of pharmacologically active molecules. Hybrid derivatives of these compounds are interesting therapeutic tools. They could be obtained using enzymatic approaches, which allow regioselective derivatizations. In this short note, the pancreatic porcine lipase was employed to mediate the regioselective synthesis of 7-docosahexaenoyl-quercetin was described. The C-7 regioisomer formation was confirmed by 1H-NMR experiment. Generally, in this approach the alcoholic OH- was preferred when present. Nevertheless, in this case, it was demonstrated that the hindrance of the acyl group is a variable to obtain a good regioselectivity in C-7 position, employing only one-step reaction.

scholarly journals One-Step Regioselective Synthesis of Benzofurans from Phenols and α-Haloketones

Molecules ◽  
2019 ◽  
Vol 24 (11) ◽  
pp. 2187 ◽  
Author(s):  
Bingqiao Wang ◽  
Qiu Zhang ◽  
Juan Luo ◽  
Zongjie Gan ◽  
Wengao Jiang ◽  
...  
Keyword(s):  
Titanium Tetrachloride ◽  
Direct Synthesis ◽  
Regioselective Synthesis ◽  
Simple Protocol ◽  
One Step

Reported here is the direct synthesis of naphthofurans and benzofurans from readily available phenols and α-haloketones promoted by titanium tetrachloride which combines Friedel–Crafts-like alkylation and intramolecular cyclodehydration into one step. This simple protocol allows for the formation of a variety of high value naphthofurans and benzofurans within which a series of cyclic and acyclic groups are readily incorporated. This process demonstrates the advantages of high levels of regioselectivity, broad substrate scope, and moderate to excellent yields.

scholarly journals Ruthenium-catalyzed Regioselective Synthesis of Dienol Diesters

1999 ◽  
Vol 23 (4) ◽  
pp. 249-249
Author(s):  
Ahmed Kabouche ◽  
Zahia Kabouche ◽  
Christian Bruneau ◽  
Pierre Henri Dixneuf
Keyword(s):  
Carboxylic Acids ◽  
Ruthenium Catalysts ◽  
Regioselective Synthesis ◽  
Direct Addition ◽  
One Step

(Geminal, geminal) dienol diesters are obtained in one step by direct addition of carboxylic acids to terminal diynes in the presence of ruthenium catalysts such as RuCI2(PR3)(arene) or [Ru(μ-O2CH)(CO)2(PR3)]2 while the catalyst [PPh2(CH2)4PPh2]Ru[η3-CH2=C(Me)CH2]2 favours the formation of regioselective ( Z,Z) dienol diesters.

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