Results 21 to 30 of about 1,377,862 (341)

Xenon binding by a tight yet adaptive chiral soft capsule

open access: yesNature Communications, 2020
Xenon binding carries potential for xenon separation and emerging applications in magnetic resonance imaging. Here, the authors report a rare example of a tight yet soft capsule, assembled from two chiral bisurea-bisthiourea macrocycle components, that ...
Shi-Xin Nie   +5 more
doaj   +1 more source

Supramolecular tessellations by the exo-wall interactions of pagoda[4]arene

open access: yesNature Communications, 2021
Supramolecular tessellation has gained increasing interest in supramolecular chemistry for its structural aesthetics and potential applications in optics, magnetics and catalysis.
Xiao-Ni Han, Ying Han, Chuan-Feng Chen
doaj   +1 more source

Reinforced molecular recognition as an alternative to rigid receptors [PDF]

open access: yes, 2006
In theory, a perfectly rigid receptor will probably be an unbeatable binder. However, rigidity may not be easy to achieve in practice and it is certainly not Nature’s method to realise high affinity. In many proteins binding affinity is increased through
Otto, Sijbren,
core   +1 more source

Palladium-catalysed formation of vicinal all-carbon quaternary centres via propargylation

open access: yesNature Communications, 2016
Formation of vicinal, quaternary stereocentres is challenging, but such products are commonly encountered in nature. Here, the authors report a palladium catalysed process to form vicinal quaternary carbons via propargylation, including in enantiopure ...
Xin Huang   +5 more
doaj   +1 more source

Imide and isatin derivatives as β-lactam mimics of β-lactam antibiotics [PDF]

open access: yes, 2002
Activated γ-lactams, which are derivatives of succinimide, phthalimide and isatin with suitable elements of molecular recognition, have been synthesised as mimics of the ß-lactam antibiotics and their chemical and biological reactivity ...
Casey, Lorraine A.   +4 more
core   +1 more source

Microparticles as Viral RNA Carriers from Stool for Stable and Sensitive Surveillance

open access: yesDiagnostics, 2023
Since its discovery, polymerase chain reaction (PCR) has emerged as an important technology for the diagnosis and identification of infectious diseases.
Emmanuel George Kifaro   +8 more
doaj   +1 more source

Differential regulation of the Epr3 receptor coordinates membrane-restricted rhizobial colonization of root nodule primordia

open access: yesNature Communications, 2017
TheLotus japonicus LysM receptor kinase EPR3 perceives rhizobial exopolysaccharides to initiate infection of the root epidermis. Here the authors show that EPR3 also mediates infection thread progression in the root cortex and show that key transcription
Yasuyuki Kawaharada   +10 more
doaj   +1 more source

Catalytic enantioselective construction of axial chirality in 1,3-disubstituted allenes

open access: yesNature Communications, 2019
Highly enantioselective synthesis of allenes has been relying, so far, on the steric hindrance of substrates. Here the authors achieve excellent stereocontrol in the synthesis of chiral allenes with a palladium-DTBM-SEGPHOS catalytic system in a non ...
Shihua Song   +3 more
doaj   +1 more source

Molecular Recognition as an Information Channel: The Role of Conformational Changes [PDF]

open access: yes, 2009
Molecular recognition, which is essential in processing information in biological systems, takes place in a crowded noisy biochemical environment and requires the recognition of a specific target within a background of various similar competing molecules.
Savir, Yonatan, Tlusty, Tsvi
core   +1 more source

Gold-catalyzed stereoselective cycloisomerization of allenoic acids for two types of common natural γ-butyrolactones

open access: yesNature Communications, 2018
Gamma-butyrolactones are widespread in Nature, however direct catalytic methods to access them are limited. Here, the authors report a gold-catalyzed cycloisomerization of allenoic acids to acces γ-butyrolactones and apply it to the asymmetric synthesis ...
Jing Zhou, Chunling Fu, Shengming Ma
doaj   +1 more source

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