Results 141 to 150 of about 89,874 (280)

Stereoselective Chemoenzymatic Synthesis Metaraminol Involving Gold‐Catalysed Alkyne Hydration and Carbonyl Biotransamination

European Journal of Organic Chemistry, EarlyView.
A chemoenzymatic synthesis of (1R,2S)‐metaraminol was developed by combining gold(I)‐catalysed alkyne hydration and stereoselective biotransamination in a sequential one‐pot process. Various phenol protection strategies were considered in oxidation‐reduction sequences, providing access to enantiopure propargylic alcohols as starting materials for ...
Lorena Escot, Iván Lavandera, Vicente Gotor‐Fernández   +2 more
wiley   +1 more source

Application, Challenges, and Prospects of Non‐Thermal Processing Technologies for Seaweed Protein Extraction—A Review

Food Chemistry International, EarlyView.
This review highlights non‐thermal extraction technologies for seaweed proteins, emphasizing their mechanisms, impacts on protein structure and functionality, and sustainability potential. Key limitations related to species dependence, extract complexity, and scale‐up are discussed to guide future industrial and biorefinery applications.
Rahat Mahmud, Md Fuad Al Hasan, Shuvojit Roy, Tanvir Ahmed   +3 more
wiley   +1 more source

Molecular Palaeontology Prospects From Exceptionally Preserved Eocene Brackish‐Water Bivalve Batissa sitakaraensis (Venerida: Corbiculidae) From Hokkaido, Japan

Geological Journal, EarlyView.
This study reports the exceptional preservation of the Eocene freshwater bivalve Batissa sitakaraensis from Hokkaido, Japan. Multimodal analyses reveal that both the aragonitic shell mineralogy and the delicate organic periostracum retain their original structural and chemical characteristics after millions of years.
Taro Yoshimura, Kazuki Hirota, Hiroyuki Kagi, Takashi Matsubara, Takenori Sasaki   +4 more
wiley   +1 more source

Bromide racemization

Contains the key stationary points obtained from CREST and PBEh-3c for the racemization of substrates via ...
openaire   +1 more source

Formal Synthesis of the Akuammiline Alkaloid (±)‐Strictamine via a (4 + 2) Annulation Reaction With a Donor–Acceptor Cyclobutane

Helvetica Chimica Acta, EarlyView.
We report a concise formal synthesis of (±)‐strictamine via a silylium‐catalyzed (4 + 2) annulation of a donor–acceptor cyclobutane, achieved in 13 steps from tryptamine. ABSTRACT The akuammiline alkaloids are complex monoterpene indole natural products with a rigid cage‐like architecture and diverse biological activities.
Clément Tanguy, Emma G. L. Robert, Jerome Waser   +2 more
wiley   +1 more source

Monosaccharide‐Based Macrocyclic Receptors—History and Recent Applications

Helvetica Chimica Acta, EarlyView.
This perspective provides an overview of most common applications of monosaccharide‐based macrocycles in molecular recognition over the past four decades. The most recent achievements, such as fluorescent ion sensing and selective amino acid binding in aqueous media, including the work from the author's lab, are highlighted. Potential future directions
Bartosz Lewandowski
wiley   +1 more source

Protein Structure Determination by Racemic and Quasi-Racemic X-Ray Crystallography. [PDF]

Chembiochem
Kent SBH.
europepmc   +1 more source

Memory of Chirality in Radical Addition–Translocation–Cyclization Cascades

Helvetica Chimica Acta, EarlyView.
Radical addition–translocation–cyclization cascades of chiral alkynes show striking memory of chirality (MoC), with strong retention of configuration when fast, polarity favored cyclization are involved. The most effective system employs a highly electron‐poor pentafluorobenzenesulfonyl group.
Christian Simon Gloor, Fabrice Dénès, Valentin Soulard, Philippe Renaud   +3 more
wiley   +1 more source

An Amino-Acid-Derived Metal-Organic Framework with Large Pores for Unspecific Enantioseparation. [PDF]

J Am Chem Soc
Ma X, Wang M, Li W, Qi J, Tu S, Zhang L, Wang KY, Fu Y, Han Z, Wu X, Zhou HC, Zhu C.   +11 more
europepmc   +1 more source

Borax Promotes Fertility of Brassica napus Better Than Other Boron Species at Suboptimal Supply

Journal of Plant Nutrition and Soil Science, EarlyView.
ABSTRACT Background Continuous and sufficient boron (B) supply is essential for achieving maximum yield in Brassica napus. Increasing incidences of environmental water limitation are linked to reduced plant B availability and increased B deficiencies.
Jiline B. Tölle, Thomas D. Alcock, Gerd Patrick Bienert   +2 more
wiley   +1 more source