Results 31 to 40 of about 8,136 (224)
Reactions of 2-methylchromones with cyanoacetamides and ethyl cyanoacetate. synthesis of 6-(2-hydroxyaryl)-4-methyl-2-oxo-1,2-dihydropyridine-3- carbonitriles and 7-hydroxy-6-imino-9-methyl-6h-benzo[c]chromene-8-carbonitriles [PDF]
, 2013 Although 2-methylchromones react with cyanoacetamide and N-methyl cyanoacetamide in the presence of sodium ethoxide in refluxing ethanol to produce 6-(2-hydroxyaryl)-4-methyl-2-oxo-1,2-dihydropyridine-3-carbonitriles, their reactions with ethyl ...
Al Naimi +23 more
core +4 more sources
Acta Crystallographica Section E, 2012 The title compound, C16H12O2, is a coumarin which was isolated from stones of the Chinese traditional medicine Clausena lansium. The pyrone ring is almost planar, with a mean deviation of 0.0135 (4) Å. The benzene ring (A) of
Guo-Cai Wang +4 more
doaj +1 more source
Open Agriculture, 2023 The antifungal activity of Trichoderma hamatum K01 to control Colletotrichum gloeosporioides C01 was recorded. Pathogenicity of C. gloeosporioides C01 on citrus leaves was confirmed by the Koch postulate. T.
Phal Pheaktra +2 more
doaj +1 more source
A novel non-peptidic agonist of the ghrelin receptor with orexigenic activity in vivo [PDF]
, 2016 Loss of appetite in the medically ill and ageing populations is a major health problem and a significant symptom in cachexia syndromes, which is the loss of muscle and fat mass. Ghrelin is a gut-derived hormone which can stimulate appetite.
Clarke, Sarah L. +7 more
core +3 more sources
Molecules, 2000 Reaction of 4-hydroxy-6-methyl-2-pyrone (1a) as well as 4-hydroxy-6-methyl-2(1H)-pyridones (1b-d) with arylmethylene malononitriles or arylmethylene methyl cyanoacetates (2a-h) leads to the formation of the very stable 5,6-fused bicyclic 2-amino-4Hpyran ...
Dieter Heber +2 more
doaj +1 more source
New Sorbicillinoids from the Mangrove Endophytic Fungus Trichoderma reesei SCNU-F0042
Marine Drugs, 2023 Three new dimeric sorbicillinoids (1–3) and one new 3,4,6-trisubstituted α-pyrone (5), along with seven analogues (4 and 6–11), were isolated from the mangrove endophytic fungus Trichoderma reesei SCNU-F0042 under the guidance of molecular networking ...
Jialin Li +5 more
doaj +1 more source
Antifungal Constituents from the Roots of Piper dilatatum Rich.
Journal of Chemistry, 2013 The compounds (+)-(7S,8R)-epoxy-5,6-didehydrokavain (1), flavokavain B (2), β-sitosterol (3), and stigmasterol (4) are reported here as chemical constituents of Piper dilatatum Rich. (Piperaceae).
Ruilan Alves dos Santos +6 more
doaj +1 more source
Novel, male-produced aggregation pheromone of the cerambycid beetle Rosalia alpina, a priority species of European conservation concern. [PDF]
, 2017 Several recent studies have demonstrated the great potential for exploiting semiochemicals in ecology and conservation studies. The cerambycid beetle Rosalia alpina represents one of the flagship species of saproxylic insect biodiversity in Europe.
Hoskovec, Michal +5 more
core +3 more sources
Metal Acetylides in Cycloaddition Reactions [PDF]
, 2017 This review highlights recent advances in the synthesis of (hetero)aromatic systems via cycloaddition reactions of alkynylmetals with dienes and dipoles.
Comas-Barceló, J., Harrity, J.P.A.
core +1 more source
3-(9H-Carbazol-9-yl)-2H-chromen-2-one
Acta Crystallographica Section E, 2011 The title compound, C21H13NO2, was prepared as an example of a new synthesis of carbazoles from a cyclic dibenzo-iodolium salt via a twofold Pd-catalysed arylation of a primary amine.
Julien Letessier +2 more
doaj +1 more source