Justicia betonica (Acanthaceae; Thai name: Tri-Cha-Va,
Hang-Kra-Rok) is an ornamental plant, commonly grown in
Northeast of Thailand. No ethno-pharmacological use of
this plant has been reported in Thai traditional medicine but
its aerial parts are used in Indian traditional medicine as an
anti-diarrhea as well as an anti-inflammatory agent.
In a previous paper, we reported the isolation and structural
elucidation of triterpenoidal glycosides, justicioside A–D,1
from the aerial portion. Further investigations of the same
plant afforded three new triterpenoidal glycosides, which
have an unprecedented skeleton for the aglycone moiety
(A-nor-B-homo-olean-12-ene skeleton type). Their structures
were elucidated on the basis of chemical and
spectroscopic evidence. The present paper deals with the
isolation and structural elucidation of these compounds.