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

Author(s):  
Sara Cembellin ◽  
Ivan Maisuls ◽  
Constantin Gabriel Daniliuc ◽  
Helena Osthues ◽  
Nikos Doltsinis ◽  
...  

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...


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

Molbank ◽  
10.3390/m1203 ◽  
2021 ◽  
Vol 2021 (2) ◽  
pp. M1203
Author(s):  
Sarah Mazzotta ◽  
Gabriele Carullo ◽  
Fabio Sciubba ◽  
Maria Enrica Di Cocco ◽  
Francesca Aiello

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.


Molecules ◽  
2019 ◽  
Vol 24 (11) ◽  
pp. 2187 ◽  
Author(s):  
Bingqiao Wang ◽  
Qiu Zhang ◽  
Juan Luo ◽  
Zongjie Gan ◽  
Wengao Jiang ◽  
...  

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.


1999 ◽  
Vol 23 (4) ◽  
pp. 249-249
Author(s):  
Ahmed Kabouche ◽  
Zahia Kabouche ◽  
Christian Bruneau ◽  
Pierre Henri Dixneuf

(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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