Variation of voltage with changes in concentration of the phenols was investigated for resorcinol, catechol, hydroquinoe and
phloroglucinol, whereas, phenol (hydoxybenzene) was used as reference.
Anti-allergic agents from natural sources (4): anti-allergic activity of new
phloroglucinol derivatives from Mallotus philippensis(Euphorbiaceae).
Earlier phytochemical explorations of members of this genus resulted in the identification of C-methyl flavonoids, triterpenoids, and
phloroglucinol derivatives [3-6].
One unique group of polyphenols present in brown algae is phlorotannins (PT), which are polymers composed exclusively of
phloroglucinol (Ragan and Glombitza, 1986; Arnold and Targett, 1998).
Chou and Patrick (1976) identified butyric, phenylacetic, 4-phenylbutyric, benzoic, p-hydroxybenzoic, vanillic, ferulic, syringic, p-coumaric, t-coumaric, and caffeic acids, resorcinol,
phloroglucinol, and salicyaldehyde from decomposing corn residues; and ferulic, vanillic, phenylacetic, 4-butyric, p-coumaric, p-hydroxybenzoic, salicylic, and o-coumaric acids and salicyaldehyde from decomposing rye residues.
Lee, "Antioxidant activity of two
phloroglucinol derivatives from Dryopteris crassirhizoma," Biological Pharmaceutical Bulletin, vol.
An array of phytochemical constituents, namely, [alpha]-amyrin, uvaol [9], beta-dike-tones [10], kaempferol-3-glucoside, naringenin-glycoside [11], gnaphaliin, pinocembrin, tiliroside [12], eudesm-5-en-11-ol [13], iso-italicene epoxide, [beta]-costol, (Z)-[alpha]-trans-berga-motol [14], and
phloroglucinol [alpha]-pyrone arzanol [15], were reported in H.
To each 30 [micro]l plasma, 3 ml of
phloroglucinol (sigma) color reagent was added, then placed in boiling water for 4 min, then cooled in ice water, the absorption of each sample was read on a UV/Vis spectrometer (Perkin Elmer) set at 554 nm.
Two delphinidin degradation products of relatively low molecular weight were identified in phenol red-free tissue culture medium (pH 7.4, temperature 37[degrees]C) after 30 min incubation, using LC-MS/MS: gallic acid (GA; peak 1) and
phloroglucinol aldehyde (peak 3) (Figure 3).
This study is the first to investigate the anticancer effects of the new
phloroglucinol derivative (2,4-bis(4-fluorophenylacetyl)phloroglucinol; BFP).
Gallic acid,
phloroglucinol, resorcinol and catechin were identified at different hours of incubation.
Proanthocyanidins and a
phloroglucinol derivative from Rumex acetosa L.
