35458-21-0Relevant articles and documents
Antibacterial Prenylated Acylphloroglucinols from Psorothamnus fremontii
Yu, Qian,Ravu, Ranga Rao,Xu, Qiong-Ming,Ganji, Suresh,Jacob, Melissa R.,Khan, Shabana I.,Yu, Bo-Yang,Li, Xing-Cong
, p. 2748 - 2753 (2015)
Psorothatins A-C (1-3), three antibacterial prenylated acylphloroglucinol derivatives, were isolated from the native American plant Psorothamnus fremontii. They feature an unusual α,β-epoxyketone functionality and a β-hydroxy-α,β-unsaturated ketone struct
Anti-inflammatory acylphloroglucinol derivatives from hops (Humulus lupulus)
Bohr, Gregor,Gerhaeuser, Clarissa,Knauft, Jutta,Zapp, Josef,Becker, Hans
, p. 1545 - 1548 (2005)
The polyphenol-enriched fraction of an ethanolic hops extract (Humulus lupulus) was separated to provide four acylphloroglucinol-glucopyranosides (1-4). 1-(2-Methylpropanoyl)phloroglucinol-glucopyranoside 1 has been isolated from hops before, whereas 1-(2-methylbutyryl)phloroglucinol-glucopyranoside 2, known as multifidol glucoside, and 1-(3-methylbutyryl)phloroglucinol- glucopyranoside 3 were found in hops for the first time. 5-(2-Methylpropanoyl) phloroglucinol-glucopyranoside 4 was identified as a new natural product. The compounds were tested for inhibition of COX-1 activity. The aglycon 5, obtained by acid hydrolysis of 1, was equally effective as phloroglucinol, with an IC50 of 3.8 μM. The inhibitory potential of the glucosides was 1 > 2 > 3 and decreased with increasing length of the acyl side chain. Compound 4 was about 2.5-fold less active than 1 (IC50: 23.7 and 58.7 μM, respectively).
A greatly improved procedure for the synthesis of an antibiotic-drug candidate 2,4-diacetylphloroglucinol over silica sulphuric acid catalyst: multivariate optimisation and environmental assessment protocol comparison by metrics
Firdaus, Maulidan,Kusumaningsih, Triana,Prasetyo, Wahyu Eko
, p. 31824 - 31837 (2020/09/17)
Efforts toward the development of a straightforward greener Gram-scale synthesis of the antibiotic compound 2,4-diacetylphloroglucinol (DAPG) have been developed. This beneficial procedure was accomplished through the Friedel-Crafts acylation of phloroglucinol over inexpensive heterogeneous silica sulphuric acid (SSA) catalystviaultrasound-assisted (US) synthesis under solvent-free condition. The influences of various parameters such as temperature, catalyst loading, and reaction time on the reaction performance were analysed using a multivariate statistical modelling response surface methodology (RSM). A high yield ofDAPG(95%) was achieved at 60 °C after 15-20 min reaction with the presence of 10% (w/w)SSAas the catalyst. Column chromatography-free and a Gram scale-up reaction also exhibited the practical applicability of this newly developed protocol. TheSSAcatalyst was recovered and recycled up to 10 consecutive runs with no appreciable loss of activity. A plausible mechanism for the Friedel-Crafts acylation of phloroglucinol is proposed. Moreover, an environmental assessment has been carried out over this present method and compared with several established literature using the EATOS software and the Andraos algorithm to assess the consumption of the substrates, solvents, catalysts, and the production of coupled products or by-products. In addition, their energy consumptions were also determined. The data collected showed that the present method is the most promising one, characterised by the highest environmental impact profile against all the other reported methods. The physicochemical properties of the synthesisedDAPGwere assessed and exhibited reasonable oral bioavailability drug property as determined by Lipinski's rules.
Biomimetic Syntheses of Callistrilones A-E via an Oxidative [3 + 2] Cycloaddition
Guo, Yonghong,Zhang, Yuhan,Xiao, Mingxing,Xie, Zhixiang
supporting information, p. 2509 - 2512 (2018/05/17)
Concise total syntheses of callistrilones A-E have been achieved from 7 and commercially available α-phellandrene (8). The synthetic strategy, which was primarily inspired by the biogenetic hypothesis, was enabled by an oxidative [3 + 2] cycloaddition fol