Results 21 to 30 of about 197,833 (262)
Functionalisation of Artemisinin and Its Ring-contracted Derivatives
Molecules, 2007 Isoxazoline analogues of artemisinin were obtained in low yield and low diastereoselectivity from the 1,3-dipolar cycloaddition of nitrile oxides. Alternatively, starting from the aldehyde 7, a number of transformations - Wittig reaction and reduction ...
Wim Dehaen +2 more
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Química Nova, 2005 The indan ring system is present in several compounds with important pharmacological properties. In this account recent examples of selected methods (Friedel-Crafts acylation, cycloaddition reactions, ring contraction, cyclization and resolution) for the
Helena M. C. Ferraz +3 more
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Indatraline: Synthesis and Effect on the Motor Activity of Wistar Rats
Molecules, 2011 A new approach for the synthesis of indatraline was developed using as the key step an iodine(III)-mediated ring contraction of a 1,2-dihydronaphthalene derivative.
Luiz F. Silva, Jr. +4 more
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Zanco Journal of Pure and Applied Sciences, 2023 The purpose of the present study is to investigate the influence of melatonin and its receptor (MT1, and MT2) agonist (Ramelteon) on vascular endothelin-1 (ET-1) reactivity in isolated aortic rings in continuous light emitting diode (LED) exposure ...
Evan B. Othman, Ismail M. Maulood
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Results in Chemistry, 2022 A silica gel supported Malaprade cleavage of methyl maslinoate (→3) followed by a titanium-on-graphite supported McMurry coupling was established to access a 2,12-terpenoid.
Sophie Hoenke, Immo Serbian, René Csuk
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Kinetic modeling of the assembly, dynamic steady state, and contraction of the FtsZ ring in prokaryotic cytokinesis. [PDF]
PLoS Computational Biology, 2008 Cytokinesis in prokaryotes involves the assembly of a polymeric ring composed of FtsZ protein monomeric units. The Z ring forms at the division plane and is attached to the membrane. After assembly, it maintains a stable yet dynamic steady state.
Ivan V Surovtsev +2 more
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Molecular Model of the Contractile Ring
, 2005 We present a model for the actin contractile ring of adherent animal cells. The model suggests that the actin concentration within the ring and consequently the power that the ring exerts both increase during contraction.
D. Biron +15 more
core +1 more source
Gopakumar-Vafa invariants do not determine flops [PDF]
, 2017 Two 3-fold flops are exhibited, both of which have precisely one flopping curve. One of the two flops is new, and is distinct from all known algebraic D4-flops.
Brown, Gavin, Wemyss, Michael
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Synthesis, Structure, and Reactivity of Binaphthyl Supported Dihydro[1,6]diazecines
Molecules, 2019 A short approach to chiral diaza-olefines from protected 2,2′-diamino-1,1′-binaphthyl is presented. Cis- and trans-olefines can be selectively obtained by twofold N-allylation followed by RCM or by bridging a 2,2′-diamino-1,1′ ...
Miran Lemmerer +4 more
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Beilstein Journal of Organic Chemistry, 2020 Thietanes are important aliphatic four-membered thiaheterocycles that are found in the pharmaceutical core and structural motifs of some biological compounds. They are also useful intermediates in organic synthesis. Various synthetic methods of thietanes
Jiaxi Xu
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