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Pseudoguaianolides from the Flowers of Parthenium hysterophorus

✍ Scribed by Biswanath Das; Gurram Mahender; Yerra Koteswara Rao; Chimmani Ramesh; Katta Venkateswarlu; Krishnan Ravikumar; Madamanchi Geethangili; Yew-Min Tzeng

Publisher
John Wiley and Sons
Year
2006
Tongue
German
Weight
90 KB
Volume
89
Category
Article
ISSN
0018-019X

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✦ Synopsis

Abstract

Two new pseudoguaianolide‐type sesquiterpene lactones, named deacetyltetraneurin A (3) and hysterone E (4), were isolated from flowers of the plant Parthenium hysterophorus L., along with the seven known compounds parthenin (1), coronopilin, tetraneurin A, 8‐β‐hydroxycoronopilin, scopoletin, hysterone D, and conchasin A (2). The structures of all the compounds were deduced by means of elemental analysis and extensive spectroscopic (1D and 2D NMR) studies, and confirmed for 3 and 4 by X‐ray crystallographic analysis.

📜 SIMILAR VOLUMES

Two New Pseudoguaianolides from the Flow
Two New Pseudoguaianolides from the Flowers of Parthenium hysterophorus
✍ Biswanath Das; Kongara Ravinder Reddy; Bommena Ravikanth; Akella Venkata Subrahm 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 German ⚖ 277 KB

## Abstract Chemical investigation on two samples of the flowers of __Parthenium hysterophorus__ afforded two new pseudoguaianolides (one from each sample) together with several known constituents. The structures of the new compounds were established by extensive spectroscopic (1D‐ and 2D‐NMR) stud