𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Structure elucidation and NMR spectral assignments of four neolignan glycosides with enantiometric aglycones from Osmanthus ilicifolius

✍ Scribed by Koichi Machida; Shigeaki Sakamoto; Masao Kikuchi

Publisher
John Wiley and Sons
Year
2008
Tongue
English
Weight
123 KB
Volume
46
Category
Article
ISSN
0749-1581

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Four new 8‐O‐4′ type neolignan glycosides with enantiometric aglycones, (7__S__,8__R__)‐erythro‐guaiacylglycerol‐β‐O‐4′‐sinapyl ether 9‐O‐β‐D‐glucopyranoside (1), (7__R__,8__S__)‐erythro‐guaiacylglycerol‐β‐O‐4′‐sinapyl ether 9‐O‐β‐D‐glucopyranoside (2), (7__S__,8__R__)‐erythro‐ syringylglycerol‐β‐O‐4′‐sinapyl ether 9‐O‐β‐D‐glucopyranoside (3) and (7__R__,8__S__)‐erythro‐ syringylglycerol‐β‐O‐4′‐sinapyl ether 9‐O‐β‐D‐glucopyranoside (4), were isolated from the leaves of Osmanthus ilicifolius. Their structures were established on the basis of NMR, circular dichroism (CD), MS and chemical data. The NMR assignments for the compounds were carried out using ^1^H, ^13^C, COSY, HMQC, HMBC and NOESY NMR experiments. Copyright © 2008 John Wiley & Sons, Ltd.

📜 SIMILAR VOLUMES

Structure elucidation and complete NMR s
Structure elucidation and complete NMR spectral assignments of a new benzoxazolinone glucoside from Acanthus ilicifolius
✍ Changhong Huo; Dongge An; Bin Wang; Yuying Zhao; Wenhan Lin 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 98 KB

## Abstract A new benzoxazolinone glucoside, 4‐__O__‐β‐D‐glucopyranosyl‐benzoxazolin‐2(3__H__)‐one, was isolated from __Acanthus ilicifolius__, a medicinal plant from south China. The complete ^1^H and ^13^C NMR assignments of the compound were carried out by using DEPT, HMBC, HMQC, NOESY and ^1^H

Structure elucidation and NMR spectral a
Structure elucidation and NMR spectral assignments of three new lignan glycosides from Akebia trifoliata
✍ Shu-hong Guan; Jia-meng Xia; Zhi-qiang Lu; Guang-tong Chen; Bao-hong Jiang; Xuan 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 211 KB

## Abstract Three new lignan glycosides (1–3) were isolated from the stems of __Akebia trifoliata__. Their structures were elucidated as (7__R__,8__R__,7′__R__,8′__R__)3,3′,5,5′tetramethoxy‐4,4′dihydroxy‐7,9′:7′,9‐diepoxylignan‐4‐__O__‐β‐D‐glucopyranoside (1), (7__S__,8__S__,8′__R__)‐4,4′,9‐trihydr

Structure elucidation and complete NMR s
Structure elucidation and complete NMR spectral assignments of new furostanol glycosides from Solanum torvum
✍ Yuanyuan Lu; Jianguang Luo; Lingyi Kong 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 English ⚖ 177 KB 👁 1 views

## Abstract Two new furostanol glycosides, torvosides O (1) and P (2), were isolated from leaves of __Solanum torvum__. Their structures were completely and unambiguously assigned by one‐ and two‐dimensional NMR techniques (^1^H NMR, ^13^C NMR, TOCSY, HSQC, ROESY and HMBC), ESI‐MS spectrometry and

Structure elucidation and complete NMR s
Structure elucidation and complete NMR spectral assignments of four new diterpenoids from Smallantus sonchifolius
✍ De-Qiang Dou; Fang Tian; Ying-Kun Qiu; Ting-Guo Kang; Feng Dong 📂 Article 📅 2008 🏛 John Wiley and Sons 🌐 English ⚖ 117 KB 👁 1 views

## Abstract Four new diterpenoids, named smaditerpenic acid A–D, together with five known compounds, were isolated from the H~2~O extract of the leaves of __Smallantus sonchifolius__ (yacon) cultivated in Liaoning, China and their structures were elucidated on the basis of one‐ and two‐dimensional

Structure elucidation and complete NMR s
Structure elucidation and complete NMR spectral assignments of a novel sesquiterpene glycoside from Ixeris sonchifolia
✍ Guan Ye; Jing-jing Fang; Ming-song Fan; Cheng-gang Huang 📂 Article 📅 2007 🏛 John Wiley and Sons 🌐 English ⚖ 90 KB 👁 1 views

## Abstract A novel sesquiterpene glycoside was isolated from the whole plant of __Ixeris sonchifolia.__ The structure was established as 1(10)__E__‐4__Z__‐3α‐hydroxy‐germacra‐1(10),4,11(13)‐trien‐6, 12‐olide‐14‐__O__‐β‐D‐glucopyranoside (1) on the basis of spectroscopic techniques and chemical ana

Structure elucidation and complete NMR s
Structure elucidation and complete NMR spectral assignments of a new taxane glycoside from the needles of Taxus cuspidata
✍ Ligeng Li; Congmei Cao; Changhong Huo; Manli Zhang; Qingwen Shi; Hiromasa Kiyota 📂 Article 📅 2005 🏛 John Wiley and Sons 🌐 English ⚖ 90 KB 👁 1 views

A new taxane glycoside was isolated from a methanol extract of the needles of Taxus cuspidata. The structure was established as 2a,9a,10b-triacetoxytaxa-4(20),11-dien-13-one- 5a-O-b-D-glucopyranoside (1) on the basis of 1D-and 2D NMR and high-resolution fast atom bombardment mass spectral analyses.