Results 21 to 30 of about 1,054,829 (302)

Borate esters: Simple catalysts for the sustainable synthesis of complex amides [PDF]

open access: yes, 2017
Chemical reactions for the formation of amide bonds are among the most commonly used transformations in organic chemistry, yet they are often highly inefficient. A novel protocol for amidation using a simple borate ester catalyst is reported.
Boulton, LT, Sabatini, MT, Sheppard, TD
core   +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

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

Indole diterpenoid natural products as the inspiration for new synthetic methods and strategies. [PDF]

open access: yes, 2017
Indole terpenoids comprise a large class of natural products with diverse structural topologies and a broad range of biological activities. Accordingly, indole terpenoids have and continue to serve as attractive targets for chemical synthesis.
Corsello, Michael A   +2 more
core   +1 more source

The effect of mixing and consistency on cellulose cationization

open access: yesHeliyon, 2019
Traditional chemical modifications of cellulose are usually done at low or medium consistencies. Processing at high solids content is expected to provide a leap forward in reduction of manufacturing costs such as minimization of chemical use, energy ...
Pia Willberg-Keyriläinen   +4 more
doaj   +1 more source

Molecular docking studies of Triphala with catalytic portion of HMG-CoA reductase enzyme [PDF]

open access: yesJournal of HerbMed Pharmacology, 2023
Introduction: Triphala, consisting of three fruits, Phyllanthus emblica L. (Phyllanthaceae), Terminalia bellirica (Gaertn.) Roxb. (Combretaceae), and T.
Prasoborn Rinthong   +2 more
doaj   +1 more source

Canvass: a crowd-sourced, natural-product screening library for exploring biological space [PDF]

open access: yes, 2018
NCATS thanks Dingyin Tao for assistance with compound characterization. This research was supported by the Intramural Research Program of the National Center for Advancing Translational Sciences, National Institutes of Health (NIH). R.B.A.
Andrade, Rodrigo B.   +94 more
core   +1 more source

Xanthine scaffold: scope and potential in drug development

open access: yesHeliyon, 2018
Medicinal plants have been the basis for discovery of various important marketed drugs. Xanthine is one such lead molecule. Xanthines in various forms (caffeine, theophylline, theobromine, etc) are abode in tea, coffee, cocoa, chocolate etc.
Nivedita Singh   +3 more
doaj   +1 more source

Infinite-body optimal transport with Coulomb Cost [PDF]

open access: yes, 2013
We introduce and analyze symmetric infinite-body optimal transport (OT) problems with cost function of pair potential form. We show that for a natural class of such costs, the optimizer is given by the independent product measure all of whose factors are
Cotar, Codina   +2 more
core   +3 more sources

The crystal structure of a matrine derivative: 41S,7aS,12S,13aR,13bR)-12-(4-methylpiperazin-1-yl)dodecahydro-1H,5H,10H-dipyrido[2,1-f:3′,2′,1′-ij][1,6]naphthyridin-10-one, C20H34N4O

open access: yesZeitschrift für Kristallographie - New Crystal Structures, 2018
C20H34N4O, triclinic, P1 (no. 1), a = 7.8545(6) Å, b = 10.8802(9) Å, c = 12.3714(9) Å, α = 73.200(7)°, β = 75.372(6)°, γ = 71.091(7)°, V = 942.65(13) Å3, Z = 2, Rgt(F) = 0.0591, wRref(F2) = 0.1641, T = 293(2) K.
Cheng Xing-An   +5 more
doaj   +1 more source

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