Results 11 to 20 of about 108,129 (277)

Synergistic Pd/Cu catalysis for stereoselective allylation of vinylethylene carbonates with glycine iminoesters: Enantioselective access to diverse trisubstituted allylic amino acid derivatives

open access: yesGreen Synthesis and Catalysis, 2021
We reported a synergistic Pd/Cu catalyzed enantioselective decarboxylative allylation of vinylethylene carbonates with glycine iminoesters, which provides facile access to non-proteinogenic diverse trisubstituted allylic amino acid derivatives in high ...
Miaolin Ke   +4 more
doaj   +1 more source

Continuous-Flow Synthesis of the Nucleobase Unit of Remdesivir

open access: yesEngineering, 2023
In this work, the nucleobase unit of the antiviral drug remdesivir, 7-bromopyrrolo[2,1-f][1,2,4]triazin-4-amine, was synthesized through five-step continuous flow.
Yongxing Guo   +5 more
doaj   +1 more source

Nickel-catalyzed direct stereoselective α-allylation of ketones with non-conjugated dienes

open access: yesNature Communications, 2023
The development of efficient and sustainable methods for the construction of carbon-carbon bonds with the simultaneous stereoselective generation of vicinal stereogenic centers is a longstanding goal in organic chemistry.
Yi-Xuan Cao   +2 more
doaj   +1 more source

Development of fluorine-substituted NH2-biphenyl-diarylpyrimidines as highly potent non-nucleoside reverse transcriptase inhibitors: Boosting the safety and metabolic stability

open access: yesActa Pharmaceutica Sinica B, 2023
Our recent studies for nonnucleoside reverse transcriptase inhibitors identified a highly potent compound JK-4b against WT HIV-1 (EC50 = 1.0 nmol/L), but the poor metabolic stability in human liver microsomes (t1/2 = 14.6 min) and insufficient ...
Xin Jin   +9 more
doaj   +1 more source

Picomolar inhibitor of reverse transcriptase featuring significantly improved metabolic stability

open access: yesActa Pharmaceutica Sinica B, 2023
Considering the undesirable metabolic stability of our recently identified NNRTI 5 (t1/2 = 96 min) in human liver microsomes, we directed our efforts to improve its metabolic stability by introducing a new favorable hydroxymethyl side chain to the C-5 ...
Ya-Li Sang   +4 more
doaj   +1 more source

Transition metal-catalyzed branch-selective hydroformylation of olefins in organic synthesis

open access: yesGreen Synthesis and Catalysis, 2021
Hydroformylation of olefins can generate linear and branched aldehydes, and the branched aldehydes are attractive precursors for the synthesis of fine chemicals and pharmaceuticals.
Yingtang Ning   +2 more
doaj   +1 more source

Huiles essentielles et chiralité moléculaire

open access: yesComptes Rendus. Chimie, 2021
Molecular chirality is a property of the nature and life, it is present everywhere and at all scales of magnitude. A fundamental aspect of molecules that is generally overlooked in scientific aromatherapy yet based on the use of the chemistry of ...
Aribi-Zouioueche, Louisa   +1 more
doaj   +1 more source

Structure-based design of novel heterocycle-substituted ATDP analogs as non-nucleoside reverse transcriptase inhibitors with improved selectivity and solubility

open access: yesActa Pharmaceutica Sinica B, 2023
Following on our recently developed biphenyl-ATDP non-nucleoside reverse transcriptase inhibitor ZLM-66 (SI = 2019.80, S = 1.9 μg/mL), a series of novel heterocycle-substituted ATDP derivatives with significantly improved selectivity and solubility were ...
Li-Min Zhao   +4 more
doaj   +1 more source

Improving the positional adaptability: structure-based design of biphenyl-substituted diaryltriazines as novel non-nucleoside HIV-1 reverse transcriptase inhibitors

open access: yesActa Pharmaceutica Sinica B, 2020
In order to improve the positional adaptability of our previously reported naphthyl diaryltriazines (NP-DATAs), synthesis of a series of novel biphenyl-substituted diaryltriazines (BP-DATAs) with a flexible side chain attached at the C-6 position is ...
Kaijun Jin   +6 more
doaj   +1 more source

Supramolecular asymmetric catalysis mediated by crown ethers and related recognition systems

open access: yesGreen Synthesis and Catalysis, 2021
In the past decades, the combination of supramolecular chemistry and catalysis has pushed forward the emergence of supramolecular catalysis as an intersectant and challenging research field.
Zibin Zhang   +5 more
doaj   +1 more source

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