Results 111 to 120 of about 98,587 (340)

Total Synthesis and Complete Stereochemical Assignment of Amphirionin‐5, a Potent Natural Osteoblasts Proliferator

ChemistryEurope, EarlyView.
The convergent total synthesis of a candidate diastereomer of amphirionin‐5 was accomplished in 22 steps via the coupling of the C1‐C16 enone segment and the C17‐C28 aldehyde segment using Stetter reaction. The overall stereochemistry of amphirionin‐5 was fully assigned, based on the comparison of spectroscopic and chiroptical data between the ...
Yusuke Ogura, Kenji Nemoto, Tadafumi Fujita, Yuta Inori, Daisuke Abe, Hironori Okamura, Hirosato Takikawa, Shigefumi Kuwahara   +7 more
wiley   +1 more source

Cycloaddition Reactions of C,N-Diphenylnitrone to Methylene-γ-butyrolactones

Molecules, 2000
Cycloaddition of C,N-diphenylnitrone to α-methylene-γ-butyrolactone afforded two diastereomeric 5-spirosubstituted isoxazolidines with high selectivity.
Andrea Goti, Cristina Faggi, Franca M. Cordero, Martina Cacciarini   +3 more
doaj   +1 more source

Garcinia lactone

Acta Crystallographica Section E Structure Reports Online, 2007
The title compound, $C_6H_6O_7,$ garcinia lactone [systematic name: (2S,3S)-3-hydroxy-5-oxo-2,3,4,5-tetrahydrofuran-2,3-dicarboxylic acid] was isolated from the rind of Garcinia cambogia. The five-membered ring adopts an envelope conformation and the packing is stabilized by $O-H^{.}O$ and $C-H^{.}O$ interactions.
Mahapatra, Sudarshan, Mallik, Srijita Basu, Rao, Venkateswara G, Reddy, Chandrasekara G, Row, Guru TN   +4 more
openaire   +1 more source

Carbohydrate metal ion complexes. Interaction of D-glucono-1,5-lactone with Zn(II), Cd(II), and Hg(II) ions in the solid and aqueous solution, studied by ¹³C-NMR, FT-IR, and X-ray powder diffraction measurements [PDF]

, 1989
H.A. Tajmir‐Riahi
openalex   +1 more source

Role of Lactone and Acid Forms in the Pleiotropic Effects of Statins [PDF]

, 2022
Giulio Preta
openalex   +1 more source

One‐Pot Ruthenium‐Catalyzed Synthesis of Benzyl/Allyl‐Halide Substituted (dihydro)naphthalenes via Radical Benzannulation

ChemistryEurope, EarlyView.
A one‐pot protocol to synthesize reactive benzyl‐ and allyl‐halide‐substituted (dihydro)naphthalenes from 2,3‐aryl‐1,3‐butadiene substrates and halogenated alkanes has been developed, using [Cp*RuCl(PPh3)2] as the catalyst. Mechanistic studies revealed an atom transfer radical addition and radical benzannulation sequence, followed by HCl elimination ...
Nicole S. van Leeuwen, David Vesseur, Thijmen Bonhoff, Jeffrey van Laar, Coert E. J. van Lare, Simon Mathew, Sonja Pullen, Joost N. H. Reek, Aalbert Zwijnenburg, Bas de Bruin   +9 more
wiley   +1 more source

12-Methyl-omega-tridecanolide, A New Macrocyclic Lactone from Angelica Root Oil. [PDF]

, 1975
Jyrki Taskinen, Berit Smestad, Tore Midtvedt, Anna‐Britta Hörnfeldt, Rolf Servin, Hans Sternerup   +5 more
openalex   +1 more source

Chemical Methods for Peptide and Protein Backbone Cleavage

ChemistryEurope, EarlyView.
Protein cleavage plays essential roles in biology and is powerful for protein manipulation and functionalization as well as in recombinant expression and purification. Here, the historical background and most recent examples of chemical methods for protein and peptide backbone cleavage are discussed (part of the figure was generated in BioRender).
Miguel Angel Alena‐Rodriguez, Christian A. Olsen   +1 more
wiley   +1 more source

Solid-Phase Synthesis of Optically Active Substituted 2 Aminofuranones Using an Activated Carbonate Linker

Molecules, 2009
An efficient three-step solid-phase synthesis of diverse 3,5-disubstituted-2-aminofuranones has been developed. α-Hydroxy acids loaded on a nitrophenyl carbonate derivative of Wang resin are used as acylating agents for the C-acylation of active ...
Dimitris Matiadis, Kyriakos C. Prousis, Olga Igglessi-Markopoulou   +2 more
doaj   +1 more source

Solvent‐Driven Pore Engineering in Coffee‐Derived Activated Hydrochar: Implications for Post‐Combustion CO2 Capture

Carbon Energy, EarlyView.
Solvent washing of coffee‐ground hydrochars produces activated carbons with tunable pore sizes while maintaining surface area. Removing non‐polar contaminants enhances microporosity, increasing CO2 uptake by 40%. Moderate pore sizes (9–12 Å) yield optimal CO2:N2 selectivity, whereas smaller pores reduce selectivity due to stronger interactions between ...
Muhammad Irfan Maulana Kusdhany, Maryna Vorokhta, Kazunari Sasaki, Masamichi Nishihara, Stephen Matthew Lyth   +4 more
wiley   +1 more source