Abstract Two new 1, 10‐seco‐eudesmanolides (1 and 2) were isolated from the flowers of
Inula japonica together with two eudesmanolide analogs (3 and 4) and two monoterpene …

Inula japonica belongs to the family Asteraceae, and its flowers have been used as dietary
supplements and health tea in China. The study aimed to identify the bioactive components …

Two new eudesmane-type sesquiterpene lactones were isolated from the roots of Inula
racemosa and their structures were elucidated as 3β-hydroxy-11α, 13-dihydroalantolactone …

Two new tri-nor-eudesmane-type sesquiterpenoids were isolated from the roots of Inula
racemosa, and their structures were elucidated as 8-oxo-tri-nor-eudesm-6-en-5α-ol (1) and …

One new eudesmane sesquiterpenoid, 11β-hydroxy-13-chloro-eudesm-5-en-12, 8-olide (1),
was isolated from the roots of Inula helenium together with nine eudesmanolides (2–10) and …

Four new dimeric sesquiterpene lactones japonicones A− D (1− 4), comprised by
eudesmane and guaiane sesquiterpenes, were isolated from the aerial part of Inula …

Three new sesquiterpenes, 1β-hydroxy-8β-acetoxycostic acid methyl ester, 1β-hydroxy-8β-
acetoxyisocostic acid methyl ester and 1β-hydroxy-4α, 11α-eudesma-5-en-12, 8β-olide …

Four new sesquiterpenoid dimers (lineariifolianoids E–H, 1–4), five new sesquiterpenoids (5–
9), and seven known sesquiterpenoids (10–16) were isolated from the aerial parts of Inula …

Two new eudesmane-type sesquiterpene lactones, 1-one-4-epi-alantolactone (1) and 4α,
13-dihydroxy-5, 7 (11)-eudesmadien-12, 8-olide (2), were isolated from the roots of Inula …

Phytochemical investigation of the flowers of Inula japonica led to isolation of nine
sesquiterpenoids, inujaponins AI, as well as eighteen known ones. These sesquiterpenoids …