Results 51 to 60 of about 23,776 (268)

Synthesis of (3R,5R)-harzialactone A and its (3R,5S)-isomer

open access: yesBeilstein Journal of Organic Chemistry, 2010
The total synthesis of (3R,5R)-harzialactone A (1) and its (3R,5S)-isomer (2) is described. Epoxide opening with thioacetal and diastereoselective reductions are used as key reactions.
Gowravaram Sabitha   +3 more
doaj   +1 more source

Diastereoselective Hydroboration of Isopropenylcyclopropanes

open access: yes, 2016
Diastereoselective Hydroboration of ...
Céline Hamel (3047295)   +3 more
core   +1 more source

Stereoselective Synthesis of Euscapholide and Tetraketide via Prins Cyclisation and Ring-Closing Metathesis

open access: yesSynOpen, 2022
A concise and diastereoselective total synthesis of tetraketide and euscapholide is described in ten steps in 10.6% overall yield from acetaldehyde and (S)-pent-4-ene-1,2-diol.
Dhanraj O. Biradar   +2 more
doaj   +1 more source

Diastereoselective desymmetric 1,2-cis-glycosylation of meso-diols via chirality transfer from a glycosyl donor

open access: yesNature Communications, 2020
Enzyme-catalyzed desymmetric glycosylations are often found in nature, however the corresponding chemical methods are lacking. Here, the authors report a highly diastereoselective desymmetric 1,2-cis-glycosylation of meso-diols found in myo-inositol 1,3 ...
Masamichi Tanaka   +7 more
doaj   +1 more source

Recent developments in the asymmetric Reformatsky-type reaction

open access: yesBeilstein Journal of Organic Chemistry, 2018
This review collects the most important developments in asymmetric Reformatsky-type reactions published since the beginning of 2013, including both diastereoselective methodologies based on the use of chiral substrates and enantioselective catalytic ...
Hélène Pellissier
doaj   +1 more source

Catalytic Diastereoselective Petasis Reactions [PDF]

open access: yesAngewandte Chemie, 2011
Multicomponent Petasis reactions: the first diastereoselective Petasis reaction catalyzed by chiral biphenols that enables the synthesis of syn and anti β-amino alcohols in pure form has been developed. The reaction exploits a multicomponent approach that involves boronates, α-hydroxy aldehydes, and amines.
Giovanni, Muncipinto   +3 more
openaire   +2 more sources

Synthesis and properties of new chiral heterocyclic peptide mimetics

open access: yes, 2008
The synthesis of tetrahydrofuran C(alpha)-tetrasubstituted amino acids (TAAs) and their effect on the conformation in small peptides are reported. The synthesis starts from the protein amino acid methionine, which is protected at the C and N terminus and
Maity, Prantik
core   +1 more source

A diastereoselective approach to axially chiral biaryls via electrochemically enabled cyclization cascade

open access: yesBeilstein Journal of Organic Chemistry, 2019
A diastereoselective approach to axially chiral imidazopyridine-containing biaryls has been developed. The reactions proceed through a radical cyclization cascade to construct the biaryls with good to excellent central-to-axial chirality transfer.
Hong Yan   +4 more
doaj   +1 more source

Stereoselective gridization and polygridization with centrosymmetric molecular packing

open access: yesNature Communications, 2020
Gridarenes with well-defined edges and vertices represent versatile nanoscale building blocks for installating frameworks but suffer from lack of stereoselective control during their synthesis. Here, the authors report a diastereoselective gridization of
Dongqing Lin   +11 more
doaj   +1 more source

Diastereoselective Synthesis of Trisubstituted Cyclopropylstannanes

open access: yes, 2016
Diastereoselective Synthesis of Trisubstituted ...
Seok-In Kim (3046293)   +2 more
core   +1 more source

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