A new triterpenoid from the fern Adiantum lunulatum and evaluation of antibacterial activity

A new triterpenoid, 22,29 xi -epoxy-30-norhopane-13 beta -ol (1) was isolated together with six known compounds viz., fern-9(11)-en-6 alpha -ol, fern-9(11)-ene, fern-9(11)-en-25-oic acid, fern-9(11)-en-28-ol, filicenol-B, adiantone and oxidation product of fern-9(11)-en-6 alpha -ol obtained as 6-oxofern-9(11)-ene from the whole plant of Adiantum lunulatum, and their structures were elucidated by means of spectroscopic analysis and antibacterial evaluation of these compounds were conducted. (C) 2001 Published by Elsevier Science Ltd.