Results 41 to 50 of about 173,508 (193)

Oxaziridines: Versatile Reagents in Modern Organic Synthesis

The Chemical Record, EarlyView.
Being capable of transferring an O atom and N‐group/atom, oxaziridines are considered multitasking agents. These are employed for diverse organic transformations, such as epoxidation of olefins, α‐ and γ‐hydroxylation/amination of carbonyl compounds, oxidation of sulfides, [3+2]cycloaddition with unsaturated systems.
Ajeet Chandra, Subba Rao Cheekatla, Keshaba Nanda Parida   +2 more
wiley   +1 more source

Pregnane steroids from a gorgonian coral Subergorgia suberosa with anti-flu virus effects

, 2016
Five new pregnane-type steroids namely subergorgols T-X (1-5) and three known analogues (6-8) were isolated from a gorgonian coral Subergorgia suberosa.
Ren, Jinwei, Lin, Wenhan, Cheng, Wei, Huang, Qixi, Liu, Huagang, Zhang, Liangren, van Ofwegen, Leen, Long, Hailin, Jin, Hongwei   +8 more
core   +1 more source

Multiplicity of 3-Ketosteroid-9α-Hydroxylase Enzymes in Rhodococcus rhodochrous DSM43269 for Specific Degradation of Different Classes of Steroids [PDF]

, 2011
The well-known large catabolic potential of rhodococci is greatly facilitated by an impressive gene multiplicity. This study reports on the multiplicity of kshA, encoding the oxygenase component of 3-ketosteroid 9α-hydroxylase, a key enzyme in steroid ...
Petrusma, Mirjan, Mirjan Petrusma, Hessels, Gerda,, Geize, Robert van der,, van der Geize, Robert, Dijkhuizen, Lubbert,, Dijkhuizen, Lubbert, Gerda Hessels, Robert van der Geize, Hessels, Gerda, Petrusma, Mirjan,, Dijkhuizen, Lubbert; id_orcid, Lubbert Dijkhuizen   +12 more
core   +4 more sources

Association Characteristics and Potential Mechanisms of Aging, Gut Microbiota, and Hearing Loss

Integrative Zoology, EarlyView.
The study found that aging leads to unchanged gut microbiota alpha diversity but an increase in Bacteroidetes and a decrease in Firmicutes at the phylum level, with specific genera, species, and functional pathways co‐associated with aging and hearing loss. Through constructing a microbe‐metabolite network, it revealed the mechanism by which protective
Cheng Cheng, Lu Wang, Runhan Li, Wenkai Lai, Chongkui Sun, Jianguo Cui, Bicheng Zhu, Jiang Zhang   +7 more
wiley   +1 more source

Comparative Genome‐Wide Association Studies of Metabolites and Grain‐Related Traits in Common Wheat

Plant Biotechnology Journal, EarlyView.
ABSTRACT The metabolome is highly diverse and the closest layer to phenotype; therefore, it is commonly regarded as a bridge between the genome and phenome in plants. Here, we performed large‐scale metabolome analysis using liquid chromatography–tandem mass spectrometry (LC–MS/MS) and 33 grain‐related traits in a diverse panel of natural accessions and
Guoguo Lv, Yanyan Liu, Bingyang Zhang, Ranran Shen, Maosong Yu, Yongyang Wu, Wanting Du, Xinru Yuan, Congwei Sun, Yan Yan, Wei Chen, Feng Chen   +11 more
wiley   +1 more source

Advances in organic UV filters for sunscreens over the past decade

Photochemistry and Photobiology, EarlyView.
Highlighted organic UV filter frameworks that have been described for sunscreens over the past decade divided into three groups: derivatives of or inspired by approved organic UV filters, natural product‐based compounds, and miscellaneous. Abstract Ultraviolet (UV) radiation is a major environmental factor in photoaging, erythema, and skin cancer ...
Gabriela Zanella Marcon, Maria Carolina Theisen, Andressa Motta Castro, Giovana Jones Radke, Fernando Fumagalli   +4 more
wiley   +1 more source

Heterocyclic Chemistry

, 2014
The functionalisation of fullerene, carbon nanotubes and graphene, to form heterocyclic derivatives is described, demonstrating the fundamental role of heterocyclic chemistry in the fast growing area of materials ...
Fedeli, Stefano, Stefano Cicchi, Luisa Lascialfari, Stefano Fedeli, Lascialfari, Luisa, Cicchi, Stefano   +5 more
core   +1 more source

New A-nor steroids and their antifouling activity from the Chinese marine sponge Acanthella cavernosa

, 2008
National Hi-Tech Development Project (863 project) [2006AA09Z446, 2006DFA31100, 2006AA09Z405]; NSFC [30672607, 30600053, 40176038, 30171106]; International Cooperation Projects of BMBF-MOSTA chemical examination of the Chinese sponge Acanthella cavernosa
邱彦, Qiu, Yan, Deng, Zhi Wei, Lin, Wen Han, Xu, Minjuan, Li, Qingshan   +5 more
core  

The impact of nandrolone decanoate and growth hormone on biosynthesis of steroids in rats

, 2013
Growth hormone (GH) and anabolic androgenic steroids (AAS) are commonly used in sports communities. Several studies have suggested an association between GH and AAS.
Johansson, Jenny,, Grönbladh, Alfhild,, Hallberg, Mathias,, Kushnir, Mark M,, Bergquist, Jonas,   +4 more
core   +1 more source

Anomeric Amide Enabled Divergent Synthesis of Unsymmetrical Ureas, Carbamates, Thioesters, and Amides From Aldehydes

Angewandte Chemie International Edition, Volume 65, Issue 37, 7 September 2026.
An anomeric amide‐enabled divergent aldehyde functionalization sequence provides one‐pot access to unsymmetrical ureas, carbamates, thiocarbamates, thioesters, and amides. Key to this transformation is the formation of N‐Boc‐hydroxamate intermediates, which serve as platforms for orthogonal activation via Lossen‐type rearrangements, single‐electron ...
Jasper L. Tyler, Meiyi Zeng, Julius Wiener, Marie‐Christin Leusmann, Colin Stein, Constantin G. Daniliuc, Frank Glorius   +6 more
wiley   +1 more source