Results 151 to 160 of about 189,010 (320)

Heats of Formation of Adducts between Antimony Pentachloride and Some Ketones and Carboxylic Esters. [PDF]

open access: bronze, 1964
Gerd Olofsson   +4 more
openalex   +1 more source

Discovery, Herbicidal Activity and Biosynthesis of a Novel Natural Tetramic Acid from Alternaria Species

open access: yesAdvanced Science, EarlyView.
The biosynthetic mechanism of novel natural tetramic acid S‐TeA in Alternaria alternata is elucidated. Threonine acts as a precursor for 2‐amino‐3‐methylhexanoic acid (AMHA) synthesis via eight key enzymes from the branched‐chain amino acid biosynthetic pathway in the mitochondrion, wherein three unique enzymes (IPMS, IPMDH, and ISMD) play critical ...
He Wang   +9 more
wiley   +1 more source

Force Profiling of a Shoulder Bidirectional Fabric-based Pneumatic Actuator for a Pediatric Exosuit [PDF]

open access: yesarXiv
This paper presents a comprehensive analysis of the contact force profile of a single-cell bidirectional soft pneumatic actuator, specifically designed to aid in the abduction and adduction of the shoulder for pediatric exosuits. The actuator was embedded in an infant-scale test rig featuring two degrees of freedom: an actuated revolute joint ...
arxiv  

Transient [3,3] Cope rearrangement of 3,3-dicyano-1,5-dienes: computational analysis and 2-step synthesis of arylcycloheptanes. [PDF]

open access: yes, 2018
A simple and modular route to arylcycloheptene scaffolds is reported. The two-step route from Knoevenagel adducts and allylic electrophiles is made possible through the design of a Cope rearrangement that utilizes a "traceless" activating group to ...
Fereyduni, Ehsan   +4 more
core   +1 more source

A General Strategy for C(sp3)─H Bond Etherification via Quinoline Derivative‐Mediated Electrolysis

open access: yesAdvanced Science, EarlyView.
A quinoline‐based mediator is introduced for the electrochemical etherification of C(sp3)─H bonds, enabling the process with minimal dependence on substrate electronic properties. The reaction demonstrates compatibility with various C─H bonds, including tertiary benzylic C─H bonds and unactivated C(sp3)─H bonds.
Yousen Xu   +4 more
wiley   +1 more source

Reaction of Proton Pump Inhibitors With Model Peptides Results in Novel Products

open access: yesJournal of Pharmacological Sciences, 2013
The proposed mechanism for proton pump inhibitors (PPIs) is that PPIs are activated at low pH to the sulfenamide form, which reacts with the sulfhydryl group of cysteine(s) at the active site of the proton pump, to produce reducible disulfide-bonded PPI ...
Charles Watson   +4 more
doaj  

Positive Halogen Compounds. VI. Preparation of Alkoxydimethylsulfonium Salts and their Role in the Kornblum Oxidation. Revision of the Structure for the Olefin-Bromotrinitromethane Adduct. [PDF]

open access: bronze, 1967
Kurt Torssell   +8 more
openalex   +1 more source

Ultrasound Cavitation Enables Rapid, Initiator‐Free Fabrication of Tough Anti‐Freezing Hydrogels

open access: yesAdvanced Science, EarlyView.
This work establishes a foundation for high‐performance sonogel fabrication using non‐focused and focused ultrasound, and demonstrates that ultrasound cavitation enables rapid, initiator‐free, and oxygen‐tolerant formation of hydrogels with superior mechanical and physical properties. .
Yixun Cheng   +10 more
wiley   +1 more source

The structure of Chlamydomonas LOV1 as revealed by time-resolved serial synchrotron crystallography

open access: yesIUCrJ
The photo-reaction of the LOV1 domain of the Chlamydomonas reinhardtii phototropin is investigated by room-temperature time-resolved serial crystallography. A covalent adduct forms between the C4a atom of the central flavin-mononucleotide chromophore and
Marius Schmidt
doaj   +1 more source

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