Results 21 to 30 of about 2,760 (139)

The stereocontrolled total synthesis of spirastrellolide A methyl ester. Fragment coupling studies and completion of the synthesis. [PDF]

, 2012
The spirastrellolides are a novel family of structurally unprecedented marine macrolides which show promising anticancer properties due to their potent inhibition of protein phosphatase 2A.
Anderson, EA, Anderson, Edward, Paterson, I, Lim, JH, Maltas, P, Dalby, SM   +5 more
core   +1 more source

Energetic Preferences for α,β versus β,γ Unsaturation [PDF]

, 2016
Density functional theory has been applied at the B3LYP/6-311+G(d,p)//B3LYP/6-31G(d) level to examine the energetics of α,β- versus β,γ-unsaturation for some common organic functional groups. Specifically, the relative stabilities of allyl-X (H2CCHCH2X)
Dale L. Boger (1306542), Patrick S. Lee (2710939), William L. Jorgensen (1284114), Wu Du (1370214)   +3 more
core   +1 more source

Relay Approach: A Convergent Synthesis of Key Fragments en route to (+)‐Neosorangicin A

Chemistry – A European Journal, EarlyView.
A selective synthesis of three key fragments of the antibiotically active (+)‐neosorangicin A is reported, providing a foundation for its convergent total synthesis and proof of strategy via a relay approach. ABSTRACT Herein, we report the synthesis of the three key fragments of the macrolide antibiotic (+)‐neosorangicin A, a compound exhibiting potent
Marvin Wenninger, Maxim Munt, Le Chang, Rositsa Stoykova, Roberto Ojcius, Oliver Spieß, Dieter Schinzer   +6 more
wiley   +1 more source

Why do peroxomolybdenum complexes chemoselectively oxidize the sulfur centers of unsaturated sulfides and sulfoxides? A DFT analysis [PDF]

, 2015
The reasons why oxo-peroxo molybdenum complexes chemoselectively oxidize unsaturated sulfides to the corresponding sulfoxides and these to sulfones without any epoxidation of the electron-rich double bond were elucidated by transition state theory and ...
Andres, J, Custodio, R, Sensato, FR, Safont, VS, Longo, E   +4 more
core   +1 more source

Retro‐Hetero‐Michael Addition Strategies in Organic Synthesis

European Journal of Organic Chemistry, EarlyView.
In this review, synthetic approaches to carbo‐ and heterocyclic compounds, including natural products, published in the last 15 years (2011–2025) which have either relied upon or included a retro‐hetero‐Michael addition step at any stage are discussed.
Dina Scarpi, Ernesto G. Occhiato
wiley   +1 more source

Enhanced Degradation of Vinyl Copolymers Based on Lipoic Acid

Journal of Polymer Science, Volume 63, Issue 6, Page 1345-1351, 15 March 2025.
ABSTRACT The introduction of degradable units into the backbone of commodity vinyl polymers represents a major opportunity to address the societal challenge of plastic waste and polymer recycling. Previously, we reported the facile copolymerization of α‐lipoic acid derivatives containing 1,2‐dithiolane rings with vinyl monomers leading to the ...
Yoichi Okayama, Parker Morris, Kaitlin Albanese, Sarah Olsen, Atsunori Mori, Javier Read de Alaniz, Christopher M. Bates, Craig J. Hawker   +7 more
wiley   +1 more source

Short-Chain Branched Polar-Functionalized Linear Polyethylene via “Tandem Catalysis” [PDF]

, 2016
Cationic PdII complex 1 chelated by an N-fixed phosphine sultam has been synthesized and structurally characterized. Exposure of 1 to ethylene resulted in the formation of short-chain olefins (1-butene: 2-butene: 1-hexene: 1-octene = 86:7:6:1) with a ...
Zhongbao Jian (1645531), Stefan Mecking (1362762)   +1 more
core   +1 more source

Porous Organic Polymers: From Molecular Design to Scalable Technologies

Small, EarlyView.
This review introduces porous organic polymers (POPs) for a wide range of applications, including energy storage, gas adsorption, catalysts, adsorbents, biomedical applications, sensors, and other exciting fields, and critically analyzes the synthesis and modification, and how structural topology influences the composites' architecture of POPs, along ...
Hossein Mashhadimoslem, Hadi Shayesteh, Simindokht Zarei‐Shokat, Rokhsareh Bakhtiari, Sheyda Abedi‐Banaei, Zahra Sheikhlouiharzand, Parnia Mohebimanesh, Seyed Mohammad Amin Ojagh, Bahareh Bakhtiari, Ali Maleki, Theo G. M. van de Ven, Sohrab Zendehboudi, Ali Elkamel   +12 more
wiley   +1 more source

α-Keto amides as precursors to heterocycles—generation and cycloaddition reactions of piperazin-5-one nitrones [PDF]

, 2003
α-Keto amides 10a,b, formed from reaction of pyruvic or benzoylformic acid with allyl amine are found to present as single rotameric forms whilst their tertiary amido analogues 10c,d present as two rotamers in solution at rt. The hydroxyimino derivatives
Fenlon, Julie, Heaney, Frances, Cunningham, Desmond, McArdle, Patrick   +3 more
core   +1 more source

Methyl on the Bridge: 2‐Methyl Propellane as Precursor for 1,3‐Substituted 2‐Methylated Bicyclo[1.1.1]Pentanes

Chemistry – A European Journal, Volume 32, Issue 28, 25 July 2026.
The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve, Mariana Gomes Manso, Tibo Van Eeckhoorn, Mark E. Light, Bruno Linclau   +4 more
wiley   +1 more source