β-Carboline Alkaloids from Hypodematium squamuloso-pilosum.

A new beta-carboline alkaloid, 1-acetyl-8-hydroxy-beta-carboline, was isolated from the fern, Hypodematium squamuloso-pilosum, along with a known compound, 1-acetyl-beta-carboline. Their structures were elucidated from spectral evidence. This is the first report of this type of alkaloid being found in ferns.