scholarly journals Structure Elucidation of a New Rearranged Abietane Diterpene from a Biologically Active Plant, Salvia eriophora

2007 ◽  
Vol 2 (10) ◽  
pp. 1934578X0700201 ◽  
Author(s):  
Gülaçtı Topçu ◽  
Ufuk Kolak ◽  
Kubilay Balcı ◽  
Ayhan Ulubelen
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Plant Extract ◽  
Structure Elucidation ◽  
Antioxidant Activities ◽  
Biologically Active ◽  
Root Extract ◽  
Spectroscopic Methods ◽  
Semi Empirical

A new rearranged abietane diterpenoid, eriophoroxide (1), was obtained from the root extract of Salvia eriophora Boiss. and Kotschy ex Boiss. Its structure was elucidated by spectroscopic methods and semi-empirical/ ab-initio calculations. DNA damaging, cytotoxic and antioxidant activities of the plant extract were tested.

scholarly journals Isolation, Structure Elucidation, and Biological Activity of a New Alkaloid from Zanthoxylum rhetsa

2011 ◽  
Vol 6 (11) ◽  
pp. 1934578X1100601
Author(s):  
Karsten Krohn ◽  
Stephan Cludius-Brandt ◽  
Barbara Schulz ◽  
Mambatta Sreelekha ◽  
Pottachola Mohamed Shafi
Keyword(s):  
Biological Activity ◽  
Carboxylic Acid ◽  
Medicinal Plant ◽  
Plant Extract ◽  
Structure Elucidation ◽  
Biologically Active ◽  
Reduction Product ◽  
Pharmacological Properties ◽  
Evergreen Tree

Several biologically active alkaloids (1-4, 6), including a new quinazoline-6-carboxylic acid (1), were isolated from the medicinal plant Zanthoxylum rhetsa, an evergreen tree, native to subtropical areas. Whereas the pharmacological properties of the plant extract and single constituents have been widely tested, we now show that all of the metabolites have antialgal activities, all but 6 are antibacterial, and 6 and the reduction product 5 (derived from 4) are also antifungal.

The phonons of the Al surfaces: comparison between semi-empirical and ab initio calculations

1992 ◽  
Vol 269-270 ◽  
pp. 146-151 ◽  
Author(s):  
A. Franchini ◽  
V. Bortolani ◽  
G. Santoro ◽  
J.A. Gaspar ◽  
A.G. Eguiluz
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Semi Empirical

Position of protonation of the cresols: Semi-empirical and ab initio calculations

1975 ◽  
Vol 36 (4) ◽  
pp. 470-474 ◽  
Author(s):  
Maurice M. Bursey ◽  
Raymond S. Greenberg ◽  
Lee G. Pedersen
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Semi Empirical

Local Vibrational Modes at AsN in Cubic GaN: Comparing Ab-Initio Calculations to a Semi-Empirical Model

1997 ◽  
Vol 258-263 ◽  
pp. 1179-1184 ◽  
Author(s):  
K. Petzke ◽  
C. Göbel ◽  
Christoph Schrepel ◽  
P. Thurian ◽  
Udo Scherz
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Empirical Model ◽  
Vibrational Modes ◽  
Cubic Gan ◽  
Local Vibrational Modes ◽  
Semi Empirical

Synthesis, semi-empirical and ab initio calculations of tertiary amides formed from cyclic amines and 3-[3-phenyl-1,2,4-oxadiazol-5-yl]propionoyl chloride

2002 ◽  
Vol 604 (2-3) ◽  
pp. 177-187 ◽  
Author(s):  
Rajendra M Srivastava ◽  
Maria da Conceição Pereira ◽  
Fernando Hallwass ◽  
Sidney Ramos Santana
Keyword(s):  
Ab Initio Calculations ◽  
Ab Initio ◽  
Cyclic Amines ◽  
Tertiary Amides ◽  
Semi Empirical
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