Results 21 to 30 of about 164,620 (294)

Unified short syntheses of oxygenated tricyclic aromatic diterpenes by radical cyclization with a photoredox catalyst

Communications Chemistry, 2023
The biomimetic two-phase strategy employing polyene cyclization and subsequent oxidation/substitution is an effective approach for divergent syntheses of [6-6-6]-tricyclic diterpenes.
Riichi Hashimoto, Kengo Hanaya, Takeshi Sugai, Shuhei Higashibayashi   +3 more
doaj   +1 more source

The Effect of N-Terminal Cyclization on the Function of the HIV Entry Inhibitor 5P12-RANTES. [PDF]

, 2017
Despite effective treatment for those living with Human Immunodeficiency Virus (HIV), there are still two million new infections each year. Protein-based HIV entry inhibitors, being highly effective and specific, could be used to protect people from ...
F Nguyen, Anna, J LiWang, Patricia, Jian, Mike, S Schill, Megan   +3 more
core   +2 more sources

Asymmetric Nazarov cyclizations [PDF]

Tetrahedron, 2011
The Nazarov cyclization1 is described as the 4 π electron conrotatory cyclization of a pentadienyl cation. The past 20 years have brought resurgent interest in this reaction most likely due to the realization that it can provide rapid and efficient access to multisubstituted cyclopentenones with excellent stereochemical control at two (or even three ...
Naoyuki, Shimada, Craig, Stewart, Marcus A, Tius   +2 more
openaire   +2 more sources

Sequence Dependence of Transcription Factor-Mediated DNA Looping [PDF]

, 2012
DNA is subject to large deformations in a wide range of biological processes. Two key examples illustrate how such deformations influence the readout of the genetic information: the sequestering of eukaryotic genes by nucleosomes, and DNA looping in ...
Barry, Bellomy, Bellomy, Brenowitz, Butler, Chen, Chen, Cloutier, Cloutier, Drew, Du, Echols, Edelman, Finzi, Frank, Garcia, Geggier, Han, Hirsh, Hogan, Hsieh, Jacobson, Krämer, Lewis, Lowary, Luger, Luijsterburg, Martin Lindén, Matthews, Mehta, Milstein, Morgan, Müller, Newman, Normanno, Oehler, Olson, Peters, Plischke, Ptashne, Rippe, Rob Phillips, Rutkauskas, Saiz, Schafer, Schleif, Segall, Shimada, Stephanie Johnson, Swigon, Tolhuis, Towles, Vanzi, Villa, Watson, Whitson, Whitson, Widom, Wong, Xu, Yin, Zhan, Zhang   +62 more
core   +4 more sources

Carbocations and the Complex Flavor and Bouquet of Wine: Mechanistic Aspects of Terpene Biosynthesis in Wine Grapes. [PDF]

, 2015
Computational chemistry approaches for studying the formation of terpenes/terpenoids in wines are presented, using five particular terpenes/terpenoids (1,8-cineole, α-ylangene, botrydial, rotundone, and the wine lactone), volatile compounds (or their ...
Pemberton, Ryan P, Tantillo, Dean J, Wedler, Henry B   +2 more
core   +2 more sources

Urine Metabolite Profiling of Human Colorectal Cancer by Capillary Electrophoresis Mass Spectrometry Based on MRB

Gastroenterology Research and Practice, 2012
Aim. The study was to investigate the metabolic profile of urine metabolites and to elucidate their clinical significance in patients with colorectal cancer. Methods. Colorectal cancers from early stage and advanced stage were used in this study.
Jin-Lian Chen, Jing Fan, Liu-Shui Yan, Hui-Qin Guo, Jing-Jing Xiong, Yan Ren, Jun-Duo Hu   +6 more
doaj   +1 more source

CYCLIZATION AND HYDROGENATION OF (+)-CITRONELLAL TO MENTHOLS OVER ZnBr₂ AND Ni CATALYSTS SUPPORTED ON γ-Al₂O₃

Indonesian Journal of Chemistry, 2010
Two steps transformation of (+)-citronellal, cyclization and hydrogenation, on ZnBr2/γ-Al2O3 and Ni/γ-Al2O3 catalyst have been realized with the selectivity to cyclization products (isopulegols) was very high (yield up to ~92.58%) over ZnBr2/γ-Al2O3 ...
Elvina Dhiaul Iftitah, M. Muchalal, Wega Trisunaryanti, Ria Armunanto   +3 more
doaj   +1 more source

Study on by-products synthesis of powder coating polyester resin catalyzed by organotin

e-Polymers, 2023
In the production of powder-coating polyester, a strong odor emanates from the water, prompting us to investigate its composition and origin. We studied the process of powder coating epoxy/polyester 50/50, which employs butyl tin tris (2-ethyl hexanoate)
Yang YuCheng, Di Chao, Wang TingWei
doaj   +1 more source

Surface Modification of Ga-Doped-LLZO (Li₇La₃Zr₂O₁₂) by the Addition of Polyacrylonitrile for the Electrochemical Stability of Composite Solid Electrolytes

Energies, 2023
Composite solid electrolytes (CSEs), often incorporating succinonitrile (SCN), offer promi I confirm sing solutions for improving the performance of all-solid-state batteries.
Hyewoo Noh, Daeil Kim, Wooyoung Lee, Boyun Jang, Jeong Sook Ha, Ji Haeng Yu   +5 more
doaj   +1 more source

The iso-Nazarov reaction [PDF]

, 2017
The construction of five-membered rings is essential in organic chemistry. In this context, pentannulation reactions that provide a straightforward access to cyclopentenones are of particular interest, as these structures are not only embedded in ...
Marsili, Lucía A., Mischne, Mirta Paulina, Riveira, Martín Jorge   +2 more
core   +1 more source