@article{ref1,
title="Ptaquiloside Z, a new toxic unstable sesquiterpene glucoside from the neotropical bracken fern Pteridium aquilinum var. caudatum",
journal="Bioorganic and medicinal chemistry",
year="1998",
author="Castillo, U. F. and Ojika, M. and Alonso-Amelot, M. and Sakagami, Y.",
volume="6",
number="11",
pages="2229-2233",
abstract="Reversed-phase HPLC fractionation, monitored by brine shrimp bioassay, led to the isolation of a new illudane-type sesquiterpene glucoside, ptaquiloside Z (2), as well as the known bracken carcinogen ptaquiloside (1), from a bioactive aqueous extract of the neotropical bracken fern Pteridium aquilinum var. caudatum (Pteridaceae). The structure of ptaquiloside Z (2) was confirmed by spectroscopic analyses and chemical degradation. Both compounds exhibited similar toxicity (LC50 62.5 micrograms/ml at 24 h and LC50 7.8 micrograms/ml at 48 h) toward brine shrimp.<p /><p>Language: en</p>",
language="en",
issn="0968-0896",
doi="",
url="http://dx.doi.org/"
}