Fast high-resolution 2D NMR spectroscopy in inhomogeneous fields via Hadamard frequency encoding and spatial encoding

A new glucuronolactone glycoside, phoenixoside B (1), has been isolated from the n-butanol soluble fraction of seeds of Phoenix dactylifera. The structure was characterized as 1-(1-ethyl-β-D-glucosyl)-4,5-diethyl-[α-D-glucofuranourono-6,3-lactone] on the basis of 1D and 2D-NMR spectroscopy and high-resolution mass spectrometry.

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A New Sesquiterpene Lactone Sulfate from Reichardia gaditana (Asteraceae)

Zeitschrift für Naturforschung B ◽

10.1515/znb-2007-0121 ◽

2007 ◽

Vol 62 (1) ◽

pp. 132-134 ◽

Cited By ~ 8

Author(s):

Christian Zidorn ◽

Ernst-Peter Ellmerer ◽

Werner Heller ◽

Richard Greil ◽

Manuela Guggenberger ◽

...

Keyword(s):

Mass Spectrometry ◽

Nmr Spectroscopy ◽

High Resolution ◽

Structure Elucidation ◽

Methanolic Extract ◽

High Resolution Mass Spectrometry ◽

2D Nmr ◽

2D Nmr Spectroscopy ◽

Asteraceae Family ◽

Resolution Mass

The new sesquiterpenoid 8-deoxy-15-(3′-hydroxy-2′-methyl-propanoyl)-lactucin 3′-sulfate (1) was isolated from the methanolic extract of roots of Reichardia gaditana L. The compound was isolated by silica gel column chromatography (CC) and repeated Sephadex LH-20 CC. Structure elucidation was accomplished by high-resolution mass spectrometry and by 1D- and 2D-NMR spectroscopy. The chemosystematic significance of the new compound is discussed in the context of sesquiterpenoids from other members of the Lactuceae tribe of the Asteraceae family.

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A New Megastigmane Glycoside, Phoenixoside A, from Phoenix Dactylifera

Natural Product Communications ◽

10.1177/1934578x1200700103 ◽

2012 ◽

Vol 7 (1) ◽

pp. 1934578X1200700

Author(s):

Sumbul Azmat ◽

Aqib Zahoor ◽

Rehana Ifzal ◽

Viqar Uddin Ahmad ◽

Faryal Vali Mohammed

Keyword(s):

Mass Spectrometry ◽

Nmr Spectroscopy ◽

High Resolution ◽

High Resolution Mass Spectrometry ◽

Soluble Fraction ◽

2D Nmr ◽

Phoenix Dactylifera ◽

Cd Spectroscopy ◽

2D Nmr Spectroscopy ◽

Resolution Mass

A new megastigmane glycoside, phoenixoside A (1), has been isolated from the n-butanol - soluble fraction of seeds of Phoenix dactylifera. The structure was characterized as (6S,7Z,9R)-hydroxy-3-oxo-ionol-9- O-β-D-glucopyranosyl-(1″→6′)-β-D–glucopyranoside on the basis of 1D and 2D NMR spectroscopy, high-resolution mass spectrometry, and CD spectroscopy.

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A continuous phase-modulated approach to spatial encoding in ultrafast 2D NMR spectroscopy

Journal of Magnetic Resonance ◽

10.1016/j.jmr.2005.05.009 ◽

2005 ◽

Vol 176 (1) ◽

pp. 107-114 ◽

Cited By ~ 40

Author(s):

Assaf Tal ◽

Boaz Shapira ◽

Lucio Frydman

Keyword(s):

Nmr Spectroscopy ◽

2D Nmr ◽

Continuous Phase ◽

2D Nmr Spectroscopy ◽

Spatial Encoding ◽

Ultrafast 2D Nmr

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A New pseudo-Alkaloid Taxane and a New Rearranged Taxane from the Needles of Taxus canadensis

Zeitschrift für Naturforschung B ◽

10.1515/znb-2008-0814 ◽

2008 ◽

Vol 63 (8) ◽

pp. 1005-1011 ◽

Cited By ~ 4

Author(s):

Manli Zhang ◽

Changhong Huo ◽

Mei Dong ◽

Ligeng Li ◽

Françoise Sauriol ◽

...

Keyword(s):

Double Bond ◽

Nmr Spectroscopy ◽

High Resolution ◽

2D Nmr ◽

Side Chain ◽

2D Nmr Spectroscopy ◽

Taxus Canadensis ◽

First Time

A new taxane with an amino side chain on C-5 and a new 11(15→1)abeotaxane having a tetrahydrofuran ring along carbon atoms C-2, C-3, C-4, C-20 identified for the first time from the needles of the Canadian yew, Taxus canadensis. Their structures were characterized as 2α,7β ,9α,10β ,13-pentaacetoxy-11β -hydroxy-5α-(2´ -hydroxy,3'-N,N-dimethylamino-3´- phenyl)-propionyloxytaxa-4(20),12-diene (1) and 13α,20β -diacetoxy-5α,7β ,9α,10β -tetrahydroxy- 2α,20-epoxy-11(15→1)abeotaxa-11,15-diene (2) on the basis of 1D, 2D NMR spectroscopy and high-resolution FABMS analysis. Taxane 1 contains a rare C-12, C-13 double bond and a basic side chain, while taxane 2 bears a rare isopropenyl group at C-1.

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