✦ LIBER ✦

Two Unusual Phenolic Substances and One New Xanthone from Hypericum sampsonii

✍ Scribed by Wen-Bo Xin; Gui-Lin Jin; Zhu-Jun Mao; Lu-Ping Qin

Publisher: John Wiley and Sons
Year: 2011
Tongue: German
Weight: 214 KB
Volume: 94
Category: Article
ISSN: 0018-019X
DOI: 10.1002/hlca.201000281

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Sampsone A (1), a novel prenylated aromatic lactone, and sampsone B (2), an unusual dihydrodibenzodioxinone, together with sampsone C (3), a new xanthone, were isolated from the aerial parts of Hypericum sampsonii. Their structures were determined by spectroscopic methods which were mainly 1D‐ and 2D‐NMR techniques, and the structure of sampsone B (2) was also confirmed by X‐ray crystallographic analysis. All of these compounds were evaluated for in vitro antibacterial activity against methicillin‐resistant Staphylococcus aureus (MRSA). Only sampsone A showed moderate antibacterial activities at a minimum inhibitory concentration (MIC) of 32 μg/ml.

📜 SIMILAR VOLUMES

New Phenolic Principles from Hypericum s

New Phenolic Principles from Hypericum sampsonii.

✍ Ming-Jaw Don; Yeh-Jeng Huang; Ray-Ling Huang; Yun-Lian Lin 📂 Article 📅 2004 🏛 John Wiley and Sons ⚖ 15 KB

Phytochemical Study on American Plants.

Phytochemical Study on American Plants. Part 1. Two New Phenol Glucosides, Together with Known Biflavones and Diterpene, from Leaves of Juniperus occidentalis Hook

✍ Tsutomu Nakanishi; Yuka Inatomi; Hiroko Murata; Naoki Iida; Akira Inada; Frank A 📂 Article 📅 2003 🏛 John Wiley and Sons ⚖ 77 KB 👁 1 views

ChemInform Abstract: An Unusual, Mild an

ChemInform Abstract: An Unusual, Mild and Convenient One-Pot Two-Step Access to (E)-Stilbenes from Hydroxy-Substituted Benzaldehydes and Phenylacetic Acids under Microwave Activation: A New Facet of the Classical Perkin Reaction.

✍ Arun K. Sinha; Vinod Kumar; Abhishek Sharma; Anuj Sharma; Rakesh Kumar 📂 Article 📅 2008 🏛 John Wiley and Sons ⚖ 38 KB 👁 2 views

## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 200 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable v