Results 21 to 30 of about 19,823 (215)

Enhancement of Dissymmetry Factors Through Axial Elongation of Hetero[n]helicenes

Angewandte Chemie, EarlyView.
A benzofuran scaffolding strategy enables the synthesis of hetero[9]‐, [12]‐, and [15]helicenes. Structural and chiroptical analyses demonstrate that systematic axial elongation increases helical distortion and significantly amplifies luminescence dissymmetry.
Jeppe S. Mogensen, Christoffer Bræstrup, Christoffer Warming, Georg I. Junker, Yann Lie, Mathias Hermann, Kurt V. Mikkelsen, Michael Pittelkow   +7 more
wiley   +2 more sources

Smoking cessation prevalence by menthol cigarette use and select demographics among adults in the United States, TUS-CPS, 2003–2019

Preventive Medicine Reports, 2023
People who smoke menthol cigarettes, particularly those who are non-Hispanic Black/African American, are less likely to achieve successful smoking cessation compared with people who smoke non-menthol cigarettes.
Jamal T. Jones, Kerui Xu, Li Deng, Michael D. Sawdey, Carolyn M. Reyes-Guzman, Cindy M. Chang, Joanne T. Chang   +6 more
doaj   +1 more source

A Novel Class of “Super‐Strained” Spiro Heterocycles: Gateway to 1‐Azaspiro[3.3]heptane Derivatives, and Biological Validation

Angewandte Chemie, EarlyView.
A new class of “super‐strained” spiro heterocycles—spirocyclic 1‐azabicyclo[1.1.0]butanes—was synthesized via insertion of cyclobutane‐, oxetane‐, and azetidine‐containing sulfonium reagents into substituted azirines. The stability of this new class of compounds was studied.
Philipp Natho, Annarita Vicenti, Marco Colella, Francesco Pasca, Giuseppe Romanazzi, Mauro Niso, Carmen Abate, Ernesto Mesto, Emanuela Schingaro, Renzo Luisi   +9 more
wiley   +2 more sources

Athlete perceptions of flavored, menthol-enhanced energy gels ingested prior to endurance exercise in the heat

Journal of the International Society of Sports Nutrition, 2022
Background L-menthol evokes a cooling sensation by activating cold sensing cation channels. Menthol-enhanced fluids can be ergogenic during exercise in the heat by improving thermal perception; hence, the addition of menthol to energy gels may benefit ...
Roxanne M Vogel, Megan LR Ross, Christian Swann, Jessica E Rothwell, Christopher J Stevens   +4 more
doaj   +1 more source

Remote Desaturation of Unprotected Amines and C─H Amination of Alkanes by Polarity‐Matched N‐Radical Cations

Angewandte Chemie, EarlyView.
Highly electrophilic N‐radical cations enable efficient and selective H‐atom transfer (HAT) of unprotected amines. In this exceedingly practical strategy, simple CuCl catalyzes an interrupted Hofmann–Löffler–Freytag (HLF) reaction to afford δ desaturated amines, aza‐heterocycles, and C─H aminated alkanes without protecting groups.
Pavitra Laohapaisan, Ross M. Dare, Meredith L. Rudich, Jacob J. A. Garwood, Siyuan Gong, R. Thomas Simons, David A. Nagib   +6 more
wiley   +2 more sources

Menthol and flavor capsule cigarettes in the Philippines: A comparison of pack design

Tobacco Induced Diseases, 2019
Introduction Tobacco use is a major public health problem in the Philippines. Menthol flavored and flavor capsule cigarettes are independently associated with increased smoking initiation and appeal to youth and young adults.
Jennifer L. Brown, Katherine Clegg Smith, Meng Zhu, Meghan B. Moran, Connie Hoe, Joanna E. Cohen   +5 more
doaj   +1 more source

Ingestion of a cold temperature/menthol beverage increases outdoor exercise performance in a hot, humid environment. [PDF]

PLoS ONE, 2015
PURPOSE:A recent laboratory study demonstrated that the ingestion of a cold/menthol beverage improved exercise performance in a hot and humid environment during 20 km of all-out cycling.
Than Tran Trong, Florence Riera, Kévin Rinaldi, Walid Briki, Olivier Hue   +4 more
doaj   +1 more source

Borylcyclopropanes: Synthetic Strategies and Applications

Angewandte Chemie, EarlyView.
Borylcyclopropanes (cyclopropanes bearing a boron substituent) sit at the intersection of two privileged frameworks in synthesis. This review provides the first exhaustive survey of their chemistry, spanning metal–carbene, nucleophilic cyclization, radical, hydroboration, and C─H activation routes, and documenting applications in medicinal chemistry ...
Aiza A. Butt, Joseph M. Ready
wiley   +2 more sources

Behavioural intentions in response to a potential menthol cigarette sales ban: a survey examining smokers in Washington, DC public housing

BMJ Open, 2022
Objectives Local, national and international policies are being proposed to ban the sale of menthol-flavoured tobacco products. With more bans being implemented, it is increasingly important to understand reactions to these bans among smokers of low ...
Kimberly Horn, Craig T Dearfield, Ian Crandell, Debra H Bernat   +3 more
doaj   +1 more source

Marketing of menthol cigarettes and consumer perceptions

Tobacco Induced Diseases, 2011
In order to more fully understand why individuals smoke menthol cigarettes, it is important to understand the perceptions held by youth and adults regarding menthol cigarettes.
Joshua Rising, Lori Alexander
doaj   +1 more source