Du,ZZ (reprint author),Chinese Acad Sci,Kunming Inst Bot,State Key Lab Phytochem & Plant Resources West Ch,Kunming 650201,Peoples R China.
Chemical composition of the essential oil from Laggera pterodonta (Compositae) was inverstigated. GC/MS Analyses led to the identification of 68 components, representing more than 96% of the total oil. By focusing on the woody note fraction of the essential oil, one new bisabolane-type sesquiterpenoid, bisabola-2,7(14), 11-trien-10-ol (1), together with ten known compounds, bisabolol oxide B (2), ylangenol (3), copaborneol (4), guai-11-en-10-ol (5), spathulenol (6), aromadendran-10-ol (7), caryophyllenol (8), 5 alpha,7 alpha-eudesm-11(13)-en-4 alpha-ol (9), gamma-costic acid (10), and eudesma-4(15), 11(13)-diene- 12,5 beta-olide (11), were isolated by using olfactory-guided fractionation. The structures of the eleven compounds were determined by NMR and MS analyses. All the volatile compounds reported here were isolated for the first time from this plant. On the basis of preliminary odor assessment, the odor of the woody-note fractions of the essential oil was assumed to be due to these isolated sesquiterpenoids.
1.Chinese Acad Sci, Kunming Inst Bot, State Key Lab Phytochem & Plant Resources West Ch, Kunming 650201, Peoples R China 2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 3.Yunnan Univ, Sch Life Sci, Kunming 650091, Peoples R China
Gu,Jian-Long;Li,Zhi-Jian;Zhang,Hong-Xia;Du,Zhi-Zhi.Fragrant Volatile Sesquiterpenoids Isolated from the Essential Oil of Laggera pterodonta by Using Olfactory-Guided Fractionation,CHEMISTRY & BIODIVERSITY,2014,11(9):1398-1405