ChemInform Abstract: PROTON NMR, CARBON-13 NMR, UV AND CD SPECTRAL DATA ON SYNTHETIC (3S,3′S)-ASTAXANTHIN, ITS 15-CIS ISOMER, AND SOME RELATED COMPOUNDS

1977 ◽  
Vol 8 (34) ◽  
pp. no-no
Author(s):  
G. ENGLERT ◽  
F. KIENZLE ◽  
K. NOACK
Keyword(s):  
Spectral Data ◽  
Proton Nmr ◽  
Related Compounds ◽  
Cis Isomer

Substitutionsreaktionen mit Phosphoramiden / Substitution Reactions with Phosphorus Amides

1972 ◽  
Vol 27 (10) ◽  
pp. 1137-1140 ◽  
Author(s):  
Herbert W. Roesky ◽  
Wolfgang Schaper
Keyword(s):  
Spectral Data ◽  
Proton Nmr ◽  
Mass Spectral Data ◽  
Substitution Reactions ◽  
Phosphorus Nmr ◽  
Mass Spectral ◽  
Fluorine Nmr

By reacting S = PX2NHCH3 or O = PX2NHCH3 (X = F and/or Cl) with S = PF2Br in the presence of triethylamine the following compounds are prepared: S = PCl2NCH3F2P = S, S = PFClNCH3F2P = S, O = PCl2NCH3F2P = S and O = PFClNCH3F2P = S. Also, the infrared, proton NMR, fluorine NMR, phosphorus NMR, and mass spectral data of these compounds are presented and discussed.

Mass Spectral Coding Technique for Identification of Drugs and Related Compounds in Reference Compendia

1977 ◽  
Vol 60 (3) ◽  
pp. 635-641
Author(s):  
Robert P Barron ◽  
Walter R Benson ◽  
John A G Roach
Keyword(s):  
Spectral Data ◽  
Electron Impact ◽  
High Mass ◽  
Mass Spectral Data ◽  
Lower Mass ◽  
Mass Spectrometers ◽  
Mass Spectral ◽  
Ion Separation ◽  
Spectral Coding ◽  
Related Compounds

Abstract A modification of the spectral abbreviation technique originally described by Hites and Biemann is proposed for identifying compounds through a coding of mass spectral data. Data from 2 closely related compounds (trimethadione and paramethadione), acquired by using 3 instruments, are presented. The technique appears to overcome observed differences in low resolution spectra when the same compound is analyzed by electron impact on mass spectrometers differing in design, manufacturer, principle of ion separation, and operator. A list of spectra coded by this technique could constitute a rapid manual system of reproducing mass spectral data, using the significant high mass ions of low abundance as well as the frequently more abundant lower mass ions. This system is compared with existing systems.

scholarly journals New ent–Kaurane type Diterpene Glycoside, Pulicaroside-B, from Pulicaria Undulata L

2008 ◽  
Vol 3 (2) ◽  
pp. 1934578X0800300 ◽  
Author(s):  
Nasir Rasool ◽  
Viqar Uddin Ahmad ◽  
Naseem Shahzada ◽  
Muhammad A. Rashida ◽  
Aman Ullah ◽  
...  
Keyword(s):  
Spectral Data ◽  
Plant Extract ◽  
Soluble Fraction ◽  
2D Nmr ◽  
Spectroscopic Techniques ◽  
Spectral Evidence ◽  
Whole Plant ◽  
Derivatives Of ◽  
Related Compounds

Investigation of the n-butanol-soluble fraction of the whole plant extract of Pulicaria undulata yielded a new ent–kaurane type diterpene glycoside, pulicaroside-B (1), together with three known compounds, paniculoside-IV (2), roseoside (3), and corchoionol C (4). Compounds 3 and 4 are derivatives of α-ionol. The structures of the new and known compounds were elucidated by 1D- and 2D-NMR spectroscopic techniques, along with other spectral evidence, and by comparison of the spectral data with those of closely related compounds.

Carbonyl-bridged and related compounds. Structural assignments by nuclear magnetic resonance spectroscopy

1967 ◽  
Vol 45 (11) ◽  
pp. 1201-1207 ◽  
Author(s):  
C. F. H. Allen
Keyword(s):  
Nuclear Magnetic Resonance ◽  
Magnetic Resonance ◽  
Magnetic Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectroscopy ◽  
Spectral Data ◽  
Resonance Spectroscopy ◽  
Nuclear Magnetic Resonance Spectra ◽  
Related Compounds ◽  
Magnetic Resonance Spectra ◽  
Nuclear Magnetic

The spectral data, predominantly nuclear magnetic resonance spectra, of a number of carbonyl-bridged and related compounds have been examined. In most instances they confirm the structures arrived at by classical procedures, but in some instances revisions have been made.

ChemInform Abstract: Carotenoids and Related Compounds. Part 41. Structure of Mytiloxanthin and Synthesis of a cis-Isomer.

ChemInform ◽  
1988 ◽  
Vol 19 (39) ◽  
Author(s):  
A. K. CHOPRA ◽  
A. KHARE ◽  
G. P. MOSS ◽  
B. C. L. WEEDON
Keyword(s):  
Related Compounds ◽  
Cis Isomer

Carotenoids and related compounds. Part 41. Structure of mytiloxanthin and synthesis of a cis-isomer

1988 ◽  
pp. 1383 ◽  
Author(s):  
Akash K. Chopra ◽  
Anakshi Khare ◽  
Gerard P. Moss ◽  
Basil C. L. Weedon
Keyword(s):  
Related Compounds ◽  
Cis Isomer

Identification of heparin samples that contain impurities or contaminants by chemometric pattern recognition analysis of proton NMR spectral data

2011 ◽  
Vol 401 (3) ◽  
pp. 939-955 ◽  
Author(s):  
Qingda Zang ◽  
David A. Keire ◽  
Lucinda F. Buhse ◽  
Richard D. Wood ◽  
Dinesh P. Mital ◽  
...  
Keyword(s):  
Pattern Recognition ◽  
Spectral Data ◽  
Proton Nmr ◽  
Pattern Recognition Analysis
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