EXTRACTION, ISOLATION AND SYNTHESIS OF DERIVATIVES OF URSOLIC ACID

INDIAN DRUGS ◽  
2012 ◽  
Vol 49 (01) ◽  
pp. 33-37
Author(s):  
S. B. Babar ◽  
◽  
K. S. Laddha
Keyword(s):  
Petroleum Ether ◽  
Ursolic Acid ◽  
1H Nmr ◽  
13C Nmr ◽  
Methanol Extract ◽  
Nmr Studies ◽  
Simple Method ◽  
Synthetic Derivatives ◽  
Derivatives Of

Study was undertaken with an objective to develop a simple method for isolation of ursolic acid from Nerium indicum Mill leaves and to prepare synthetic derivatives of ursolic acid. The leaves were defatted with petroleum ether and then extracted with methanol. Methanol extract was basified and subsequently acidified, followed by charcoal treatment to isolate ursolic acid. Synthetic derivatives were prepared from isolated ursolic acid by substitution at C-3 position. The structure of ursolic acid and its derivatives were confirmed by IR, MS, 1H NMR, 13C NMR studies.

1H NMR and 13C NMR Studies of Oil from Pyrolysis of Indonesian Oil Sands

2016 ◽  
Vol 30 (3) ◽  
pp. 2478-2491 ◽  
Author(s):  
Wang Qing ◽  
Jia Chunxia ◽  
Ge Jianxin ◽  
Guo Wenxue
Keyword(s):  
1H Nmr ◽  
13C Nmr ◽  
Oil Sands ◽  
Nmr Studies

scholarly journals Investigations on Terminalia Arjuna Fruits: Part 1- Isolation of Comounds from Petroleum Ether Fractions

1970 ◽  
Vol 43 (1) ◽  
pp. 123-130 ◽  
Author(s):  
M Zahurul Haque ◽  
M Abdullah As Saki ◽  
M Umar Ali ◽  
M Yusuff Ali
Keyword(s):  
Petroleum Ether ◽  
Key Words ◽  
1H Nmr ◽  
13C Nmr ◽  
Chromatographic Separation ◽  
Spectroscopic Studies ◽  
Biologically Active ◽  
Terminalia Arjuna ◽  
Pure Compounds ◽  
Column Chromatographic

Arjun (Terminalia arjuna) is a source of many potent, biologically active compounds, planned all over Bangladesh. The chemical examinations of its fruits were taken up to isolate and identify active principles. For this purpose fresh fruits of Terminalia arjuna were extracted with rectified spirit. The extract was then triturated with petroleum ether (40-60°C), which was then subjected to column chromatographic separation followed by PTLC. Such separation led to the isolation of some new pure compounds, TA-1 to TA-5. The structures of compounds were characterized through spectroscopic studies (IR, 1H-NMR and 13C-NMR). Key words: Arjun, TA-1, TA-5, Spectroscopic studies DOI: 10.3329.bjsir.v43i1.863 Bangladesh J. Sci. Ind. Res. 43(1),123-130, 2008

13C NMR studies on trifluoroacetyl derivatives of 2-acetamido-2-deoxyhexoses

1984 ◽  
Vol 22 (11) ◽  
pp. 717-719 ◽  
Author(s):  
M. Ranganathan ◽  
P. Balaram
Keyword(s):  
13C Nmr ◽  
Nmr Studies ◽  
Derivatives Of

Thermal and 1H NMR studies on some azo derivatives of barbituric acid

1991 ◽  
Vol 189 (1) ◽  
pp. 83-89 ◽  
Author(s):  
Ramesh Chandra ◽  
Narendra N. Ghosh
Keyword(s):  
1H Nmr ◽  
Barbituric Acid ◽  
Nmr Studies ◽  
Azo Derivatives ◽  
Derivatives Of

360-MHz 1H-NMR AND 50-MHz 13C-NMR STUDIES OF OLIGOSACCHARIDES FROM GLYCOSAMINOGLYCANS

1981 ◽  
Vol 9 (2) ◽  
pp. 283P-283P ◽  
Author(s):  
H. van Halbeek ◽  
G. A. Veldink ◽  
L. Dorland ◽  
J. F. G. Vliegenthart ◽  
A. Kimura ◽  
...  
Keyword(s):  
1H Nmr ◽  
13C Nmr ◽  
Nmr Studies

Characterization of oligosaccharides from the chondroitin/dermatan sulfates. 1H-NMR and 13C-NMR studies of reduced trisaccharides and hexasaccharides

FEBS Journal ◽  
2005 ◽  
Vol 272 (24) ◽  
pp. 6276-6286 ◽  
Author(s):  
Thomas N. Huckerby ◽  
Ian A. Nieduszynski ◽  
Marcos Giannopoulos ◽  
Stephen D. Weeks ◽  
Ian H. Sadler ◽  
...  
Keyword(s):  
1H Nmr ◽  
13C Nmr ◽  
Nmr Studies
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