- 著者
-
Hong Seong Su
Lee Seon A
Han Xiang Hua
LEE Min Hee
HWANG Ji Sang
PARK Jeong Sook
OH Ki-Wan
HAN Kun
LEE Myung Koo
LEE Heesoon
KIM Wook
LEE Dongho
HWANG Bang Yeon
- 出版者
- 公益社団法人日本薬学会
- 雑誌
- Chemical & pharmaceutical bulletin (ISSN:00092363)
- 巻号頁・発行日
- vol.56, no.2, pp.199-202, 2008-02-01
- 被引用文献数
-
1
27
Two new melampolide-type sesquiterpene lactones, 8β-epoxyangeloyloxy-9α-ethoxy-14-oxo-acanthospermolide (1) and 8β-angeloyloxy-9α-ethoxy-14-oxo-acanthospermolide (2), were isolated from the leaves of yacon [Smallanthus sonchifolia (POEPP. et ENDL.) H. Robinson] along with eleven known melampolides, allo-schkuhriolide (3), enhydrin (4), polymatin A (5), fluctuanin (6), 8β-angeloyloxy-9α-acetoxy-14-oxo-acanthospermolide (7), 8β-angeloyloxy-14-oxo-acanthospermolide (8), 8β-methacryloyloxymelampolid-14-oic acid methyl ester (9), uvedalin (10), polymatin B (11), 8β-tigloyloxymelampolid-14-oic acid methyl ester (12), and sonchifolin (13). Their structures were established on the basis of spectroscopic evidence including 1D- and 2D-NMR experiments. All isolates were evaluated for inhibition of LPS-induced nitric oxide production in murine macrophage RAW 264.7 cells.