and malaria.4 The leaves are used to treat chronic respiratory
disease in “dai” ethnopharmacy historically in the Yunnan
province, P. R. of China.5 On the basis of traditional usage,
the leaf extract was also developed to be a commercial
traditional Chinese medicine in China, which has been both
prescribed in hospital clinics and sold in drug stores over
the counter. Previous phytochemical studies on the leaves
of A. scholaris collected in India, Pakistan, Thailand, the
Philippines, Malaysia, and Indonesia showed diverse monoterpenoid
indole alkaloidal patterns.6 However, the chemical
constituents from leaves of A. scholaris cultivated in Yunnan,
the raw medicine material of the above-mentioned over the
counter drugs, have not been reported. As part of a continuing
effort to discover novel secondary metabolites from Yunnan
local medicinal plants, we undertook phytochemical research
on this plant.7 In this paper, we describe the isolation and
structural elucidation of two novel monoterpenoid indole