Two new sesquiterpene lactone glycosides were isolated from the whole plant of Sonchus transcaspicus. Their structures were elucidated as 1β-O-β-D-glucopyranosy-5α, 6β H-eudesma-3-en-12, 6α-olide and 1β-O-β-D-glucopyranosy-15-O-(p-hydroxylphenylacetate)-5α, 6β H-eudesma-3, 11(13)-dien-12, 6α-olide by spectral methods (HRMS, 1D and 2D NMR).
Two new eremophilenolides were isolated from the roots of Ligularia muliensis. Their structures were elucidated on the basis of the spectroscopic analysis as 6β-acetoxy-8β-hydroxyleremophil-7（11）-en- 12,8α-olide 1 and 6α-hydroxy-8βH-eremophil-7（11）-en- 12,Sa-olide 2.
Chemical investigation of Erigeron annus afforded two new eudesmenes, which were identified as 1β, 5α-dihydroxyeudesma-4(15)-en (1) and 1β, 7α-dihydroxyeudesma-4(15)-en (2). Their structures were established by spectroscopic methods including 2D NMR experiments.
A pair of epimers of highly-oxygenated monoterpenes were isolated from the traditional Chinese medicine Eupatorium fortunei. Their structures were elucidated on the basis of the spectral analysis as （1R＊, 2S＊, 3R＊, 4R＊, 6S＊）-1, 2, 3, 6-tetrehydroxy-p-menthane （1） and （1S＊, 2S＊, 3S＊, 4R＊, 6R＊）-1, 2, 3, 6-tetrehydroxy-p-menthane （2）.
Two new eremophilenolides, 1β-hydroxy-2β-methylsenecioyloxyeremophil-7 （11）-en- 8β （12）-olide （1）, 1β-hydroxy-2β-methylsenecioyloxy-8α-methoxyeremophil-7 （11）-en-8β （12）- olide （2）, were isolated from the roots of Cacalia pilgeriana. Their structures were elucidated by spectroscopic methods and X-ray diffraction analysis.
