Results 51 to 60 of about 132,855 (268)

Sharpless Asymmetric Dihydroxylation: An Impressive Gadget for the Synthesis of Natural Products: A Review

open access: yesMolecules, 2023
Sharpless asymmetric dihydroxylation is an important reaction in the enantioselective synthesis of chiral vicinal diols that involves the treatment of alkene with osmium tetroxide along with optically active quinine ligand.
Aqsa Mushtaq   +8 more
doaj   +1 more source

Concise asymmetric synthesis of (−)-bilobalide [PDF]

open access: yesNature, 2019
The Ginkgo biloba metabolite bilobalide is widely ingested by humans but its effect on the mammalian central nervous system is not fully understood1-4. Antagonism of γ-aminobutyric acid A receptors (GABAARs) by bilobalide has been linked to the rescue of cognitive deficits in mouse models of Down syndrome5.
Baker, Meghan A.   +3 more
openaire   +2 more sources

Structural insights and therapeutic targets in Acinetobacter baumannii capsule biosynthesis

open access: yesFEBS Letters, EarlyView.
Hypervirulent KL49 A. baumannii's capsular polysaccharide contains the nonulosonic acid 8‐epi‐Leg5,7Ac2, synthesized by epimerization via ElaA, ElaB, and ElaC. Crystal structures of ElaA, ElaB, and ElaC reveal their role in CMP‐Leg5,7Ac2 synthesis and regioselective C8 epimerization.
Woo Cheol Lee   +7 more
wiley   +1 more source

Asymmetric Total Synthesis of Rollicosin. [PDF]

open access: yesChemInform, 2005
[structure: see text] The first total synthesis of rollicosin, a member of a rare subgroup of Annonaceous acetogenins containing two terminal gamma-lactones, is reported. The approach features a highly regio- and stereoselective tandem ring-closing/cross-metathesis reaction for construction of the east-wing lactone and incorporation of the alkyl spacer.
Kevin J, Quinn   +4 more
openaire   +2 more sources

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

open access: yesFEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang   +4 more
wiley   +1 more source

Tuning the properties of coumarin-based small molecule donors via strong acceptor substitution for advanced donor/PCBM organic solar cells

open access: yesScientific African
In this study, we designed and evaluated high-efficiency coumarin-based small-molecule donors for organic solar cells (OSCs) using density functional theory (DFT) calculations to address the challenge of improving charge transfer and photovoltaic ...
Walid Taouali   +2 more
doaj   +1 more source

Recent trends and developments in the asymmetric synthesis of profens

open access: yesGreen Synthesis and Catalysis, 2023
The profens belong to a class of nonsteroidal anti-inflammatory drugs (NSAIDs), which exert significant anti-inflammatory, analgesic, antipyretic and other pharmacological effects.
Qiuyue Wang   +10 more
doaj   +1 more source

A novel quinazolinone insulin receptor inhibitor and its synergy with an EGFR inhibitor in glucose‐driven glioblastoma

open access: yesMolecular Oncology, EarlyView.
The novel styrylquinazolinone‐based molecule W1B effectively suppresses glioblastoma by inhibiting IGF1R and EGFR. In high‐glucose microenvironments driving tumor resistance, W1B acts synergistically with the EGFR inhibitor dacomitinib. This combination safely blocks compensatory survival signaling in zebrafish xenograft models. Showcasing promising in
Patryk Rurka   +9 more
wiley   +1 more source

Catalytic enantioselective intramolecular hydroamination of alkenes using chiral aprotic cyclic urea ligand on manganese (II)

open access: yesNature Communications
Asymmetric catalysis for enantioselective intramolecular hydroamination of alkenes is a critical method in the construction of enantioenriched nitrogen-containing rings, often prevalent in biologically active compounds and natural products.
Bin Cui   +6 more
doaj   +1 more source

Targeting human MutT homolog 1 (MTH1) for cancer eradication: current progress and perspectives

open access: yesActa Pharmaceutica Sinica B, 2020
Since accelerated metabolism produces much higher levels of reactive oxygen species (ROS) in cancer cells compared to ROS levels found in normal cells, human MutT homolog 1 (MTH1), which sanitizes oxidized nucleotide pools, was recently demonstrated to ...
Yizhen Yin, Fener Chen
doaj   +1 more source

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