Results 131 to 140 of about 217,585 (392)

Implications of Rewiring Bacterial Quorum Sensing [PDF]

, 2008
Bacteria employ quorum sensing, a form of cell-cell communication, to sense changes in population density and regulate gene expression accordingly.
Arnold, Frances H., Haseltine, Eric L.
core   +4 more sources

Phenolic Profile and Bioactive Prospects of Wild Annona Species From Angola

Chemistry &Biodiversity, EarlyView.
ABSTRACT Annona species (Annonaceae family) are valued for their nutritional and medicinal importance, especially in traditional medicine. This study investigated the phenolic profiles of the Angolan Annona muricata, Annona squamosa, and Annona senegalensis leaves, stem barks, and seeds hydroethanolic, infusion, and decoction extracts, also evaluating ...
Josefa Rangel, Ângela Liberal, Tiane C. Finimundy, Tânia S. P. Pires, Pedro Cravo, Maria Conceição Silva, Gustavo Capatti Cassiano, Lillian Barros, Maria M. Romeiras, Ângela Fernandes   +9 more
wiley   +1 more source

Synthesis and characterization of novel metal complexes of (pentulose-?-lactone-2,3-enedibenzoate barbituric acid) with some metal ions

مجلة بغداد للعلوم, 2013
New (pentulose-?-lactone-2,3-enedibenzoate barbituric acid) (L) have been synthesized by reaction of (5-C-dimethyl malonyl-pentulose-?-lactone-2,3-enedibenzoate) with urea in alkaline media (sodium methoxide). (Ca+2, Co+2, Ni+2, Cu+2, Zn+2, Cd+2 and Hg+2)
Baghdad Science Journal
doaj   +1 more source

Antitumor activity and mechanism of costunolide and dehydrocostus lactone: Two natural sesquiterpene lactones from the Asteraceae family.

Biomedicine & pharmacotherapy = Biomedecine & pharmacotherapie, 2020
Qijuan Li, Zhan-guo Wang, Yu Xie, Huiling Hu   +3 more
semanticscholar   +1 more source

Stereodivergent, Diels-Alder-initiated organocascades employing α,β-unsaturated acylammonium salts: scope, mechanism, and application. [PDF]

, 2017
Chiral α,β-unsaturated acylammonium salts are novel dienophiles enabling enantioselective Diels-Alder-lactonization (DAL) organocascades leading to cis- and trans-fused, bicyclic γ- and δ-lactones from readily prepared dienes, commodity acid chlorides ...
Abbasov, Mikail E, Hudson, Brandi M, Romo, Daniel, Tantillo, Dean J   +3 more
core   +2 more sources

Total Synthesis and Complete Stereochemical Assignment of Amphirionin‐5, a Potent Natural Osteoblasts Proliferator

ChemistryEurope, EarlyView.
The convergent total synthesis of a candidate diastereomer of amphirionin‐5 was accomplished in 22 steps via the coupling of the C1‐C16 enone segment and the C17‐C28 aldehyde segment using Stetter reaction. The overall stereochemistry of amphirionin‐5 was fully assigned, based on the comparison of spectroscopic and chiroptical data between the ...
Yusuke Ogura, Kenji Nemoto, Tadafumi Fujita, Yuta Inori, Daisuke Abe, Hironori Okamura, Hirosato Takikawa, Shigefumi Kuwahara   +7 more
wiley   +1 more source

Unusual Multiple Production of N-Acylhomoserine Lactones a by Burkholderia sp. Strain C10B Isolated from Dentine Caries

Sensors, 2014
Bacteria realize the ability to communicate by production of quorum sensing (QS) molecules called autoinducers, which regulate the physiological activities in their ecological niches.
Share Yuan Goh, Wen-Si Tan, Saad Ahmed Khan, Hooi Pin Chew, Noor Hayaty Abu Kasim, Wai-Fong Yin, Kok-Gan Chan   +6 more
doaj   +1 more source

Carbohydrate metal ion complexes. Interaction of D-glucono-1,5-lactone with Zn(II), Cd(II), and Hg(II) ions in the solid and aqueous solution, studied by ¹³C-NMR, FT-IR, and X-ray powder diffraction measurements [PDF]

, 1989
H.A. Tajmir‐Riahi
openalex   +1 more source

One‐Pot Ruthenium‐Catalyzed Synthesis of Benzyl/Allyl‐Halide Substituted (dihydro)naphthalenes via Radical Benzannulation

ChemistryEurope, EarlyView.
A one‐pot protocol to synthesize reactive benzyl‐ and allyl‐halide‐substituted (dihydro)naphthalenes from 2,3‐aryl‐1,3‐butadiene substrates and halogenated alkanes has been developed, using [Cp*RuCl(PPh3)2] as the catalyst. Mechanistic studies revealed an atom transfer radical addition and radical benzannulation sequence, followed by HCl elimination ...
Nicole S. van Leeuwen, David Vesseur, Thijmen Bonhoff, Jeffrey van Laar, Coert E. J. van Lare, Simon Mathew, Sonja Pullen, Joost N. H. Reek, Aalbert Zwijnenburg, Bas de Bruin   +9 more
wiley   +1 more source

Garcinia lactone

Acta Crystallographica Section E Structure Reports Online, 2007
The title compound, $C_6H_6O_7,$ garcinia lactone [systematic name: (2S,3S)-3-hydroxy-5-oxo-2,3,4,5-tetrahydrofuran-2,3-dicarboxylic acid] was isolated from the rind of Garcinia cambogia. The five-membered ring adopts an envelope conformation and the packing is stabilized by $O-H^{.}O$ and $C-H^{.}O$ interactions.
Mahapatra, Sudarshan, Mallik, Srijita Basu, Rao, Venkateswara G, Reddy, Chandrasekara G, Row, Guru TN   +4 more
openaire   +1 more source