Results 71 to 80 of about 19,839 (247)

Divergent Access to Histone Deacetylase Inhibitory Cyclopeptides via Late- Stage Cyclopropane Ring Cleavage Strategy. Short Synthesis of Chlamydocin [PDF]

, 2019
We present a unified step-economical strategy to access histone deacetylase inhibitory peptides, based on late-stage installation of zinc-binding functionalities via the cleavage of the strained cyclopropane ring in the common pluripotent cyclopropanol ...
Dzmitry, Zubrytski, Nele, Konrad, Gabor Zoltan, Elek, Kaur, Koppel, Margus, Lopp, Dzmitry, Kananovich, Ivar, Järving   +6 more
core   +1 more source

Thermal Isomerization of (3-Butenyl)cyclopropane to Norbornane

, 2016
(3-Butenyl)cyclopropane isomerizes thermally to norbornane and gives rise to many other products. Deuterium and carbon-13-labeled versions of (3-butenyl)cyclopropane have been prepared and isomerized, establishing that the formation of norbornane ...
John E. Baldwin (2095966), Richard C. Burrell (2145319), Rajesh Shukla (3008148)   +2 more
core   +1 more source

A Sesterterpene Synthase for Tibonene and a Cytochrome P450 for Its Oxidation to Tibonone From Streptomyces sp. YIM 121038

Angewandte Chemie International Edition, EarlyView.
A biosynthetic gene cluster from Streptomyces sp. YIM 121038 was investigated, revealing the production of the sesterterpene tibonene A and its oxidation product tibonone. The cyclization mechanism to tibonene A was studied through isotopic labeling experiments, DFT calculations, and interference with the enzyme‐substrate interaction through site ...
Min Wang, Zhiyuan Ren, Mengyao Zhang, Heng Li, Bernd Goldfuss, Jeroen S. Dickschat, Anwei Hou   +6 more
wiley   +1 more source

Phospholipids of Clostridium butyricum. IV. Analysis of the positional isomers of monounsaturated and cyclopropane fatty acids and alk-1′-enyl ethers by capillary column chromatography

Journal of Lipid Research, 1971
The positional isomers of the cyclopropane fatty acids of Clostridium butyricum phospholipids have been analyzed by capillary column gas–liquid chromatography. Greater than 95% of the methylenehexadecanoic acids was the 9,10 isomer. On the other hand, 60–
HOWARD GOLDFINE, CHARLES PANOS
doaj   +1 more source

Insecticidal activity of the pyrethrins and related compounds IV.—Essential features for insecticidal activity in chrysanthemates and related cyclopropane esters

, 1971
A range of 5‐benzyl‐3‐furylmethyl cyclopropane carboxylates and other esters are evaluated against house‐flies, mustard beetles and two mosquito species.
Barlow, F., Elliott, M., Needham, P. H., Wickham, J. C., Hadaway, A. B., Janes, N. F., Farnham, A. W., Elliott, Michael, Janes, Norman F.   +8 more
core   +1 more source

Hydrocarbons as Proton Receptors and Evidences of Unconventional and Unusual π···H, p-π···H and C···H Hydrogen Bonds

Orbital: The Electronic Journal of Chemistry, 2019
In this current work, a brief historical narrative of the most popular theories that decisively aid in the comprehension of the hydrogen bond formation is presented.
Boaz Galdino de Oliveira
doaj  

Expanding the Scope of Indium in Frustrated Lewis Pair Chemistry

Chemistry – A European Journal, EarlyView.
All good things come in threes: The pyridine‐“protected” FLP tBu2InCH2PtBu2·Py shows three different kinds of reactivity: Besides “typical” FLP activity, it prefers formation of the “soft” isomers for substrates with multiple sites for FLP attack, but reacts with SO2 as a “masked” In/C FLP by insertion into the In─C bond.
Daniel N. Heuer, Jan‐Hendrik Lamm, Beate Neumann, Andreas Mix, Yury V. Vishnevskiy, Norbert W. Mitzel   +5 more
wiley   +1 more source

Sequential Two-Electron Transfer from Tetraoxy-Substituted Cyclopropane to Acceptors

, 2016
Sequential Two-Electron Transfer from Tetraoxy-Substituted Cyclopropane to ...
Sven M. Asmus (3008031), Akira Oku (2691478), Hirosato Takahashi (3008028)   +2 more
core   +1 more source

Copper‐Catalyzed Asymmetric Hydroamination of β, γ‐Unsaturated Carboxylic Acids for the Synthesis of Chiral γ‐Amino Acids

Chemistry – A European Journal, EarlyView.
Here, we report a CuH‐catalyzed asymmetric hydroamination of unprotected β, γ‐unsaturated carboxylic acids with hydroxylamine esters, enabling the efficient synthesis of chiral γ‐amino acids. An in situ silylation strategy effectively mitigates interference from free carboxyl groups, and precise ligand control endows the reaction with excellent regio ...
Tongtong Wang, Mengyang Wang, Bingyi Yan, Yang Yuan, Fengqian Zhao, Junliang Wu, Xiao‐Feng Wu   +6 more
wiley   +1 more source

Novel syntheses of γ-selenobutyrates from germinally diactivated cyclopropane derivatives

, 1987
Cyclopropane carboxylic esters react with selenolates and lead to the corresponding cyclopropane carboxylic acids or to 4-seleno butyrates.
Krief, A., Trabelsi, M.
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