and phenolic glycosides showed an increased abundance at all stages of the infection," he explains.
Banana peels are rich in phenolic compounds which include hydroxy benzoic acids, benzoquinones, phenyl acetic acids, and acetophenones
, in addition to anthraquinones, naphthoquinones, isoflavanoids, and flavonoids, along with lignins, lignans, and tannins .
The chemical shift value found for the carbon atom of the methyl group falls within the range reported in the literature for thiosemicarbazones derived from acetophenones
, ranging between 10 to 15 ppm when methyl group is located in syn position relative to NHCSNHR group [10-12].
Huang et al., "Rapid identification of acetophenones
in two Cynanchum species using liquid chromatography-electrospray ionization tandem mass spectrometry," Journal of Pharmaceutical and Biomedical Analysis, vol.
Williams, Selective Bromination of Substituted Acetophenones
with Dioxan Dibromide, Aust.
In the non-polar extract, substances such as steroids, terpenes, acetophenones
, aglycone, waxes, sapogenins, iridoids and sesquiterpenes, highly lipophilic substances can befound (CECHINEL & YUNES, 1998; CANTRELL et al., 2001).
Claisen-Schmidt condensation of 2,5-disubstituted indole-3-carboxaldehydes with substituted acetophenones
produced 3 -(2,5- disubstituted-1H-indol-3-yl)-1-(4-substituted-phenyl)prop-2-en-1-one 2a-i.
Some of these recent contributions capitalize on arylglyoxal derivatives as starting materials, which are synthetized from acetophenones
exploiting selenium dioxide as oxidizing agent.
They can be obtained from the respective substituted acetophenones
via the intermediate substituted 1-phenylethylformamides.
(1987) reported the synthesis of seven 3-arylidene flavanone by condensing 2-Hydroxy acetophenones
with aromatic aldehydes in aqueous alkaline medium, along with corresponding chalcones.
The oximes of select C(alpha)-ketones, such as 2'-acetonaphthone, were dilithiated with lithium diisopropylamide [LDA], and the resulting 1,4-dianion type intermediates were condensed with a variety of electron enriched acetophenones
, such as 4'methoxyacetophenone or 3',4'-dimethoxyacetophenone.
6,184,417 B1: Bayer AG, Leverkusen, Germany, has patented a method for preparing acetophenones
with a fiuoralkyl-substituted aromatic nucleus.