Chemical Diversity in Ligularia oligonema

Abstract

The chemical composition of a sample of the title species collected in Pianma, Lushui County, Yunnan Province of China, was examined. Two 3,6,10-oxygenated and two 3,6-oxygenated furanoeremophilanes were isolated. Structures of two new compounds were elucidated. The 3,6-oxygenated furanoeremophilanes were not detected in a sample of the same species previously collected in Laojunshan, Jianchuan County, Yunnan, indicating chemical diversity in the species.

Cumulative Data of 1H and 13C NMR Signals and Specific Rotations of Eremophilane Sesquiterpenoids. 4. 10H-3-O-Furanoeremophilanes

“…Table 13 tabulates the data of 6β-ethoxyfuranoeremophilan-3-one (64) 29 and three 6β-acyloxyfuranoeremophilan-3-ones, 65-67 (Figure 7). 29,30 All the compounds having 3-oxo groups have been isolated from Ligularia stenoglossa, the data being reported in the meeting, but the data not published in the literature.…”