scholarly journals Five sesquiterpenes from the root Aucklandia lappa Decne.

2019 ◽  
pp. 5-11
Author(s):  
Chjuo Fuguan ◽  
Seesregdorj S ◽  
Gerelt-Od Ya
Keyword(s):  
Phenolic Compounds ◽  
Nmr Spectra ◽  
Previous Literature ◽  
Two Dimensional ◽  
Nmr Data ◽  
Nmr Techniques ◽  
The One ◽  
Dehydrocostus Lactone ◽  
First Time

The four sesquiterpenes calameone (1), dehydrocostus lactone (2), aristolone (3), alantolactone (4) and one triterpenoid α-amyrine (5), simple phenolic compounds such as 4-hydroxybenzaldehyde, (6), piceol (7), apocynin (8), dihydroconiferyl (9) and coniferyl (10) have been identified by using the proton and carbon NMR spectra which were isolated from a dichloromethane extract of the roots of Aucklandia lappa Decne. Their structures were established by the one‐and two‐dimensional NMR techniques including DEPT, COSY and HMBC spectroscopy. This work examined proton and carbon NMR data of calameone (1) and aristolone (3) for the first time, which had not yet been fully studied in previous literature. Рүда ургамлын (Aucklandia lappa Decne.) терпент нэгдлийн судалгаа Хураангуй: Рүда ургамлын үндэсний дихлорметаны ханднаас хроматографийн аргуудаар эвдесман хэлбэрийн сесквитерпен каламеон (1), аристолон (3), алантолактон (4), гвяан хэлбэрийн сесквитерпен дегидрокостасын лактон (2), тритерпеноид α-амурин (5) болон энгийн фенолт нэгдэл 4-гидроксибензальдегид (6), пицелол (7), апоцинин (8), дегидрокониферол (9), кониферол (10) зэрэг бодисыг химийн цэвэр байдалтай ялгав. Эдгээр бодисын бүтэц байгуулалтыг нэг болон хоёр хэмжээст ЦСР-ын DEPT, COSY, HMBC спектроскопийн аргаар таньж тодорхойлов. Урьд өмнө каламеон (1), аристолон (3) бодисуудын устөрөгч ба нүүрстөрөгчийн атомуудын химийн шилжилтийн утгуудад оноолт бүрэн хийгдээгүй байсан ба энэ хоёр бодисын оноолтыг гүйцээж хийв. Түлхүүр үг: Терпеноид, сесквитерпент лактон, дегидрокостасын лактон, ЦСР.

Studies of the neutral trisaccharides of goat (Capra hircus) colostrum and of the one- and two-dimensional 1H and 13C NMR spectra of 6′-N-acetylglucosaminyllactose

1994 ◽  
Vol 262 (2) ◽  
pp. 173-184 ◽  
Author(s):  
Tadasu Urashima ◽  
William A. Bubb ◽  
Michael Messer ◽  
Yuhnagi Tsuji ◽  
Yasuko Taneda
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
Capra Hircus ◽  
13C Nmr Spectra ◽  
Two Dimensional ◽  
1H And 13C Nmr ◽  
The One

ChemInform Abstract: Total Assignment of the 1H and 13C NMR Spectra of Benzo(f)(1) benzothieno(2,3-c)quinoline (I) by Inverse-Detected Two-Dimensional NMR Techniques.

ChemInform ◽  
2010 ◽  
Vol 23 (20) ◽  
pp. no-no
Author(s):  
J. P. SHOCKCOR ◽  
R. C. CROUCH ◽  
G. E. MARTIN ◽  
A. CHERIF ◽  
J.-K. LUO ◽  
...  
Keyword(s):  
13C Nmr ◽  
Nmr Spectra ◽  
13C Nmr Spectra ◽  
Two Dimensional ◽  
1H And 13C Nmr ◽  
Nmr Techniques

scholarly journals Steroidal Saponins from the Seeds of Hyoscyamus Niger L.

2008 ◽  
Vol 3 (1) ◽  
pp. 89-93
Author(s):  
Irina Lunga ◽  
Pavel Kintia ◽  
Stepan Shvets ◽  
Carla Bassarello ◽  
Sonia Piacente ◽  
...  
Keyword(s):  
13C Nmr ◽  
Chemical Shifts ◽  
Two Dimensional ◽  
Hyoscyamus Niger ◽  
Steroidal Saponins ◽  
1H And 13C Nmr ◽  
13C Nmr Chemical Shifts ◽  
Nmr Techniques ◽  
Pregnane Glycoside ◽  
First Time

Ten steroidal saponins have been isolated form the seeds of Hyoscyamus niger L. for the first time and their structures have been elucidated. Seven saponins belong to spirostane series, two are furostane-type and one is pregnane glycoside. Hyoscyamosides B, C and C2 are new steroidal saponins, which have never been reported before in literature. Complete assignments of the 1H and 13C NMR chemical shifts for all these glycosides were achieved by means of one- and two-dimensional NMR techniques, including 1H–1H COSY, HSQC, HMBC and ROESY spectra.

scholarly journals Transition and Group IIB Metal Complexes With “Active Aldehyde” Derivatives of Thiamine

1994 ◽  
Vol 1 (2-3) ◽  
pp. 221-231 ◽  
Author(s):  
Maria Louloudi ◽  
Nick Hadjiliadis ◽  
Jean Pierre Laussac ◽  
Robert Bau
Keyword(s):  
Crystal Structure ◽  
Solid State ◽  
Electronic Spectra ◽  
Nmr Spectra ◽  
Two Dimensional ◽  
Tetrahedral Structure ◽  
The One ◽  
Pyrimidine Moiety ◽  
Derivatives Of ◽  
Cyclohexyl Methyl

The Zn2+, Cd2+, Hg2+, Co2+ and Ni2+ ions produce zwitterionic type complexes with the ligands (L), 2-(α-hydroxy-benzyl)thiamine=HBT and 2-(α-hydroxy-cyclohexyl-methyl)thiamine = HCMT, of the type MLCl3. The ligands are in the S conformation, the metals are bound to N1, of the pyrimidine moiety of thiamine and the complexes have a trigonally distorted tetrahedral structure, as the crystal structure of the complex Zn(HCMT)Cl3 (orthorombic, a=14.4 b=14.1 c=17.4 β=105.6O V=3392A3 R=13.8%), the one and two dimensional H1 nmr spectra of the Zn2+, Cd2+ and Hg2+ complexes and the electronic spectra of the Co2+ and Ni2+ complexes show. A brief review of the previous techniques (structure of the Hg(HBT)Cl3 complex, IR-Raman spectra, C13 nmr in solution and solid state etc) used to characterize these complexes, is also given here and the proper conclusions drawn.

Total assignment of the1H and13C NMR spectra of benzo[f][1]benzothieno[2,3-c]quinoline by inverse-detected two-dimensional NMR techniques

1991 ◽  
Vol 28 (8) ◽  
pp. 2035-2039 ◽  
Author(s):  
John P. Shockcor ◽  
Ronald C. Crouch ◽  
Gary E. Martin ◽  
Abdallah Cherif ◽  
Jiann-Kuan Luo ◽  
...  
Keyword(s):  
Nmr Spectra ◽  
Two Dimensional ◽  
Nmr Techniques

Two Dimensional 1H–1H and 13C–1H-Correlation NMR: The Analysis of η3-Allylnickel Complexes

1982 ◽  
Vol 37 (8) ◽  
pp. 1054-1057 ◽  
Author(s):  
Reinhard Benn
Keyword(s):  
Nmr Spectra ◽  
Nickel Complexes ◽  
Routine Analysis ◽  
Two Dimensional ◽  
Nmr Techniques ◽  
C Nmr

Abstract The 1H and 13C NMR spectra of various alkylsubstituted η3-allyl-η5-cyclopentadienyl-nickel complexes were analysed with the help of two dimensional correlation (1H-1H and 1H-13C) NMR. The use of two dimensional NMR techniques for the routine analysis of complicated NMR spectra is demonstrated.

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