Results 31 to 40 of about 175,047 (318)

Synthesis and Applications of Asymmetric Catalysis Using Chiral Ligands Containing Quinoline Motifs

SynOpen, 2022
In the past decade, asymmetric synthesis of chiral ligands containing quinoline motifs, a family of natural products displaying a broad range of structural diversity and their metal complexes, have become the most significant methodology for the ...
Vasudevan Dhayalan, Rambabu Dandela, K. Bavya Devi, Ragupathy Dhanusuraman   +3 more
doaj   +1 more source

Asymmetric Total Synthesis of Nigerone [PDF]

Organic Letters, 2007
AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract, please click on HTML or PDF.
Evan S, Divirgilio, Elizabeth C, Dugan, Carol A, Mulrooney, Marisa C, Kozlowski   +3 more
openaire   +2 more sources

A concise asymmetric synthesis of (−)-rasfonin [PDF]

Org. Biomol. Chem., 2012
A very efficient total synthesis of the apoptosis inducer (-)-rasfonin has been developed using CuBr/JosiPhos catalyzed iterative asymmetric conjugate addition of MeMgBr and Feringa's butenolide.
Huang, Yange, Minnaard, Adriaan J., Feringa, Ben L.   +2 more
openaire   +2 more sources

Rhodium catalysed asymmetric synthesis of tertiary amines [PDF]

, 2020
The asymmetric synthesis of tertiary amines is a highly desirable goal, but far fewer efficient synthetic methods exist for their synthesis, relative to primary and secondary amines.
Gilbert, Sophie Hannah
core   +1 more source

Computational and Experimental Studies on the α-Functionalization of Ketones Using Domino Reactions: A Strategy to Increase Chemoselectivity at the α-Carbon of Ketones

Molecules
A facile strategy to increase the chemoselectivity of domino reactions was proposed and successfully applied in the α-functionalization of ketones.
Hui Sun, Li-Heng Yang, Meng-Yun Fu, Bin Cui   +3 more
doaj   +1 more source

Therapeutic Effects of Coumarins with Different Substitution Patterns

Molecules, 2023
The use of derivatives of natural and synthetic origin has gained attention because of their therapeutic effects against human diseases. Coumarins are one of the most common organic molecules and are used in medicine for their pharmacological and ...
Virginia Flores-Morales, Ana P. Villasana-Ruíz, Idalia Garza-Veloz, Samantha González-Delgado, Margarita L. Martinez-Fierro   +4 more
doaj   +1 more source

Asymmetric Synthesis of the Tetraponerine Alkaloids [PDF]

The Journal of Organic Chemistry, 2017
The asymmetric syntheses of all eight tetraponerine alkaloids (T1-T8) were achieved using the diastereoselective conjugate additions of lithium amide reagents in the key stereodefining steps. Conjugate addition of either lithium (R)-N-allyl-N-(α-methylbenzyl)amide or lithium (R)-N-(but-3-en-1-yl)-N-(α-methylbenzyl)amide to tert-butyl sorbate was ...
Stephen G. Davies, Ai M. Fletcher, Ian T. T. Houlsby, Paul M. Roberts, James E. Thomson   +4 more
openaire   +2 more sources

Memory of chirality: An emerging strategy for asymmetric synthesis

, 2004
'Memory of chirality' (MOC) is an intriguing strategy for asymmetric synthesis because it appears to do the impossible: the sole chiral center of a molecule directs the stereochemical course of a reaction even though that center is destroyed in
Hsu, D.C., Carlier, P.R., Paul Carlier, Carlier, Paul R., Zhao, Hongwu, Hongwu Zhao, Hsu, Danny C., Danny Hsu, Zhao, H.   +8 more
core   +1 more source

Asymmetric [3,3]-Sigmatropic Rearrangement of Sulfoniums for the Synthesis of Quaternary Center-Containing Polycyclic Molecules: Application to the Total Synthesis of Myrmenaphthol A

, 2022
The asymmetric total synthesis of myrmenaphthol A, a natural product isolated from a Hawaiian sponge of the genus myrmekioderma, has been achieved in 12 steps.
Weiping, ZHOU, Arnaud, Voituriez
core   +1 more source

MCM-41-supported L-phenylalaninol as a chiral heterogeneous ligand in the enantioselective Kharasch-Sosnovsky reaction

Results in Chemistry
In this study, L-phenylalaninol, synthesized from the reduction of naturally occurring L-phenylalanine, was immobilized on MCM-41. The resulting heterogeneous ligand was comprehensively characterized using various spectroscopic techniques, such as FT-IR,
Saadi Samadi, Shadi Kamangar, Hamid Arvinnezhad, Parya Noori   +3 more
doaj   +1 more source