Results 101 to 110 of about 14,691 (260)

Liquid chromatographic strategies for separation of bioactive compounds in food matrices [PDF]

open access: yes, 2018
Nowadays, there is an increasing attention for nutraceuticals and, in general, bioactive compounds naturally present in food. Indeed, the possibility of preserving human health and preventing disease (e.g., cardiovascular diseases, cancer etc.) by the ...
Capriotti, Anna Laura   +5 more
core   +1 more source

Identification and isolation of insecticidal oxazoles from Pseudomonas spp.

open access: yesBeilstein Journal of Organic Chemistry, 2012
Two new and five known oxazoles were identified from two different Pseudomonas strains in addition to the known pyrones pseudopyronine A and B. Labeling experiments confirmed their structures and gave initial evidence for a novel biosynthesis pathway of ...
Florian Grundmann   +7 more
doaj   +1 more source

Pyran Rings Containing Polyketides from Penicillium raistrickii

open access: yesMarine Drugs, 2016
Five new pyran rings containing polyketides, penicipyrans A–E (1–5), together with the known pestapyrone A (6), were isolated from the saline soil-derived Penicillium raistrickii. Their structures were determined by interpretation of NMR and HRESIMS data.
Li-Ying Ma   +6 more
doaj   +1 more source

Synthesis of benzofurans via an acid catalysed transacetalisation/Fries-type O → C rearrangement/Michael addition/ring-opening aromatisation cascade of β-pyrones.

open access: yesChemical Communications, 2016
An unusual and facile approach for the synthesis of 2-benzofuranyl-3-hydroxyacetones from 6-acetoxy-β-pyrones and phenols is presented. The synthetic sequence involves a cascade transacetalisation, Fries-type O → C rearrangement followed by Michael ...
Communication ChemComm
semanticscholar   +1 more source

Citacions bibliogràfiques segons el model ACS (American Chemical Society) [PDF]

open access: yes, 2020
Guia bàsica per a fer les citacions bibliogràfiques segons el model ACS (American Chemical Society), un estil de citació que s'aplica principalment en l'àmbit de la ...
Universitat Autònoma de Barcelona. Servei de Biblioteques
core  

Fungal entomopathogens: new insights on their ecology [PDF]

open access: yes, 2009
An important mechanism for insect pest control should be the use of fungal entomopathogens. Even though these organisms have been studied for more than 100 y, their effective use in the field remains elusive.
Andrews   +104 more
core   +1 more source

Triacetic acid lactone as a common intermediate for the synthesis of 4-hydroxy-2-pyridones and 4-amino-2-pyrones

open access: yes, 2016
At ambient temperature, triacetic acid lactone reacts with amines to produce 4-amino-2-pyrones. If the temperature is raised to 100 °C, 4-hydroxy-2-pyridones are generated.
G. Kraus   +2 more
semanticscholar   +1 more source

A Survey of the Chemical Compounds of spp. (Piperaceae) and Their Biological Activities

open access: yesNatural Product Communications, 2016
The genus Piper is one of the largest genera in the Piperaceae, with most species widely distributed globally, covering all continents. To date, many Piper species have been scientifically investigated for their chemical diversities and interesting broad
Cai-Peng Xiang   +6 more
doaj   +1 more source

A 3-Vinyl Cephem Derivative, a Useful Intermediate in the Synthesis of Cepham Antibiotics, from Associated with Banana Fruit

open access: yesNatural Product Communications, 2015
Aspergillus awamori was isolated from a diseased banana fruit, Musa acuminata cv. Ambul. The fungus was fermented in potato dextrose broth and on potato dextrose agar media and the fungal media were extracted with EtOAc. Chromatographic separation of the
H.M.S.K.H Bandara   +4 more
doaj   +1 more source

Home - About - Disclaimer - Privacy