Results 1 to 10 of about 323,081 (216)

Click Chemistry in Natural Product Modification

open access: yesFrontiers in Chemistry, 2021
Click chemistry is perhaps the most powerful synthetic toolbox that can efficiently access the molecular diversity and unique functions of complex natural products up to now.
Xiang Zhang   +5 more
doaj   +3 more sources

Antibiofilm and antibacterial activities of lupinifolin in combination with protein synthesis inhibitors against methicillin-resistant Staphylococcus aureus [PDF]

open access: yesJournal of HerbMed Pharmacology, 2023
Introduction: Methicillin-resistant Staphylococcus aureus (MRSA)-derived biofilm formation is a crucial virulence factor, which essentially contributes to therapeutic challenges.
Parichart Kwaengmuang   +4 more
doaj   +1 more source

A PRELIMINARY QUALITATIVE STUDY OF AN ALKALOID IN THE FRUIT OF TERONG BELANDA (Cyphomandra betacea, Cav)

open access: yesIndonesian Journal of Chemistry, 2010
Preliminary studies on Terong Belanda (C. betacea ) have been carried out in this investigation with an aim to examine the presence of an alkaloid in the fruit of Terong Belanda.
Fredryk Mandey   +2 more
doaj   +1 more source

The crystal structure of 13-(pyrazole-1-yl-4-carbonitrile)-matrine, C19H25N5O

open access: yesZeitschrift für Kristallographie - New Crystal Structures, 2021
C19H25N5O, monoclinic, P21 (no. 4), a = 16.0600(2) Å, b = 5.3992(1) Å, c = 19.8514(2) Å, β = 94.260(1)°, V = 1716.58(4) Å3, Z = 4, Rgt (F) = 0.0350, wRref(F2) = 0.0908, T = 100.00(10) K.
Li Jun-Jie   +8 more
doaj   +1 more source

Perylenequinones from an endophytic Alternaria sp. of Pinus ponderosa

open access: yesHeliyon, 2018
The differential solvent extraction and further purification of fractions of endophytic Alternaria sp. isolated from Pinus ponderosa led to the isolation of further two perylenequinone compounds as 3,6,6a,9,10-pentahydroxy-7,8-epoxy-4-oxo-4,5,6,6a,6b,7,8,
Mudasir A. Tantry   +7 more
doaj   +1 more source

Isolation and characterization of starch from Limnophila aromatica

open access: yesHeliyon, 2019
Starch is one of the digestible natural polymers found in vascular plants. This natural polymer is the primary source of polysaccharides to produce energy for humans.
Cynthia Wijaya   +7 more
doaj   +1 more source

Furan-site transformations of obacunone as potent insecticidal agents

open access: yesHeliyon, 2018
Furan ring is a key pharmacophore for insecticidal activity of limoninoids. To develop natural-product-based insecticidal agents, a series of furan-site transformations (2, 3 and 3a–j) of obacunone were synthesized by selective bromination and following ...
Ping Xiang   +5 more
doaj   +1 more source

First Stereoselective Total Synthesis of (3)-De--methylbotryosphaeriodiplodin

open access: yesNatural Product Communications, 2019
A simple and highly efficient first stereoselective total synthesis of a benzofused macrocyclic lactone, ( 3S,7R )-de- O -methylbotryosphaeriodiplodin has been accomplished utilizing Jacobson's kinetic resolution, Marouka asymmetric allylation, Stille ...
Jhillu S. Yadav   +5 more
doaj   +1 more source

Analysis of major carotenoids and fatty acid composition of freshwater microalgae

open access: yesHeliyon, 2019
Considering the nutraceutical properties, the high commercial value from pigments and essential lipids and the environmental sustainability, the purposes of this study were to assess the major carotenoids and fatty acids composition of nine microalgae ...
Aline Terra Soares   +3 more
doaj   +1 more source

Synthesis, characterization and in vitro biological evaluation of two matrine derivatives

open access: yesScientific Reports, 2018
Matrine is a traditional Chinese medicine and botanical pesticide with broad biological activities, including pharmacological and agricultural activities.
Xingan Cheng   +9 more
doaj   +1 more source

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