Description:
<jats:p><jats:bold>Novel Diterpenoids from the Toadstools <jats:italic>Tricholoma aurantium</jats:italic> and <jats:italic>T. fracticum</jats:italic> (Agaricales)</jats:bold><jats:ext-link xmlns:xlink="http://www.w3.org/1999/xlink" xlink:href="#note1" /><jats:fn><jats:p>Herrn Professor Dr. <jats:italic>Heinz G. Floss</jats:italic> zum 60. Geburtstag gewidmet.</jats:p></jats:fn>
</jats:p><jats:p>Two novel diterpenoids trichaurantin (<jats:bold>1</jats:bold>) and its 6‐<jats:italic>O</jats:italic>‐acetyl derivative <jats:bold>2</jats:bold> have been isolated from <jats:italic>Tricholoma</jats:italic> species. Their structures were established by spectroscopic methods and an X‐ray crystal analysis, <jats:bold>1</jats:bold> and <jats:bold>2</jats:bold> appear to be biosynthetically related to the neodolabellane and dolastane group of diterpenes and can be designated as 2,3‐seconeodolastane derivatives.</jats:p>