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Complete 1H and 13C NMR assignments of sesquiterpene glucosides from Ixeris sonchifolia

✍ Scribed by ZeyEi Na; Jeong-Yong Cho; Hyoung Jae Lee; Jin Ho Chung; Ki Deok Park; Young Ju Lee; Soo Cheol Shin; Yo Sup Rim; Keun-Hyung Park; Jae-Hak Moon

Publisher
John Wiley and Sons
Year
2007
Tongue
English
Weight
167 KB
Volume
45
Category
Article
ISSN
0749-1581

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✦ Synopsis

Abstract

Four sesquiterpene glucosides were isolated from Ixeris sonchifolia Hance. The structure of a new compound (1) was assigned as 9β‐monohydroxy‐2,12‐dioxo‐guaia‐3,11(13)‐dien‐1α,5α,6β,7α,9β,10αH‐12,6‐olide‐9‐O‐β‐D‐ glucopyranoside (ixerinoside). In addition, unambiguous and complete assignments of ^1^H NMR chemical shifts for crepidiaside A (2), ixerin Z (3), and 11,13α‐dihydroixerin Z (4) are presented. The assignments were achieved by two‐dimensional NMR (gCOSY, gHSQC, gHMBC, NOESY) and one‐dimensional nuclear Overhauser effect (NOE) experiments. Copyright © 2007 John Wiley & Sons, Ltd.

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