Synthesis and Spectroscopic Studies of the Photochromism of Bifunctional Derivatives of Cymantrene in Solution and without Solvent

2016 ◽  
Vol 2016 (23) ◽  
pp. 3767-3773 ◽  
Author(s):  
Elena S. Kelbysheva ◽  
Lyudmila N. Telegina ◽  
Alexey N. Rodionov ◽  
Tatyana V. Strelkova ◽  
Mariam G. Ezernitskaya ◽  
...  
1982 ◽  
Vol 13 (36) ◽  
Author(s):  
F. CALDERAZZO ◽  
S. FREDIANI ◽  
B. R. JAMES ◽  
G. PAMPALONI ◽  
K. J. REIMER ◽  
...  

2005 ◽  
Vol 751 (1-3) ◽  
pp. 151-155 ◽  
Author(s):  
Piotr Przybylski ◽  
Grzegorz Bejcar ◽  
Wojciech Schilf ◽  
Bogumil Brzezinski ◽  
Franz Bartl

2007 ◽  
Vol 62 (4) ◽  
pp. 580-586 ◽  
Author(s):  
Kalhari S. Kosmulalage ◽  
Shamsulhaq Zahid ◽  
Chibuike C. Udenigwe ◽  
Sarfraz Akhtar ◽  
Athar Ata ◽  
...  

Phytochemical studies on the ethanolic extract of Barleria prionitis of Sri Lankan origin have resulted in the isolation of a new compound, balarenone (1), along with three known compounds, pipataline (2), lupeol (3) and 13,14-seco-stigmasta-5,14-diene-3-α-ol (4). The structures of 1 - 4 were elucidated with the aid of extensive NMR spectroscopic studies. Compounds 1 - 4 showed moderate inhibitory activity against glutathione S-transferase (GST) and acetylcholinesterase (AChE). Compounds 1, 2 and 4 also exhibited antibacterial activity against Bacillus cereus and Pseudomonas aeruginosa (25 μg/disk). Three different derivatives of compound (2), 7,8-epoxypipataline (5), 8- amino-7-hydroxypipataline (6) and 7,8-dibromopipataline (7) were synthesized to evaluate them for GST and AChE inhibitory activities. Household microwave radiations were used to synthesize compound (6). Among all tested compounds, 8-amino-7-hydroxypipataline (6) exhibited a significant AChE inhibitory activity with an IC50 value of 36.8 μM.


1987 ◽  
Vol 169 (2) ◽  
pp. 253-258 ◽  
Author(s):  
Ming-Cheh LIU ◽  
Boi-Hanh HUYNH ◽  
William J. PAYNE ◽  
Harry D. PECK ◽  
Daniel V. DERVARTANIAN ◽  
...  

2009 ◽  
Vol 62 (8) ◽  
pp. 1293-1301 ◽  
Author(s):  
M.A. Taher ◽  
S.E. Jarelnabbi ◽  
A.G.M. Al-Sehemi ◽  
S.M. El-Medani ◽  
R.M. Ramadan

1981 ◽  
Vol 204 (1) ◽  
pp. 47-53 ◽  
Author(s):  
Alan J. Crowe ◽  
Robin Hill ◽  
Peter J. Smith ◽  
John S. Brooks ◽  
Ralph Formstone

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