scholarly journals Synthesis and Characterization of New Diketone Analogues of Podophyllotoxin

2008 ◽  
Vol 5 (1) ◽  
pp. 114-119 ◽  
Author(s):  
K. H. Hemakumar ◽  
A. D. Sathisha ◽  
Y. B. Basavaraju
Keyword(s):  
Anticancer Activity ◽  
Synthesis And Characterization ◽  
Naturally Occurring ◽  
High Yields ◽  
New Compounds

The new compounds 6,6a-dihydro-2,3-dimethoxy-9-nitro–11bH benzo [C]-fluoren 5,7-dione, 6,6a-dihydro-2,3-dimethoxy-9-chloro–11bH benzo[C]-fluoren-5,7-dione and 6,6a-dihydro-2,3-dimethoxy-9-fluoro–11bH benzo[C]-fluoren-5,7- dione were synthesized in high yields. They are analogues of naturally occurring lignan podophyllotoxin which exhibits anticancer activity. They are very essential to study anticancer activity.

Coordination Compounds of Some 3d-Transition Metal Ions with N1-[4-(4-bromo-phenylsulfonyl)-benzoyl]-N4-(4-methoxyphenyl)- thiosemicarbazide

2008 ◽  
Vol 59 (7) ◽  
Author(s):  
Madalina Angelusiu ◽  
Maria Negoiu ◽  
Stefania-Felicia Barbuceanu ◽  
Tudor Rosu
Keyword(s):  
Coordination Compounds ◽  
Magnetic Moments ◽  
Thermo Gravimetric Analysis ◽  
Electronic Spectroscopy ◽  
Transition Metal Ions ◽  
Synthesis And Characterization ◽  
Gravimetric Analysis ◽  
Thermo Gravimetric ◽  
New Compounds

The paper presents the synthesis and characterization of Cu(II), Co(II), Ni(II), Cd(II), Zn(II) and Hg(II) complexes with N1-[4-(4-bromo-phenylsulfonyl)-benzoyl]-N4-(4-methoxyphenyl)-thiosemicarbazide. The new compounds were characterized by IR, EPR, electronic spectroscopy, magnetic moments, thermo-gravimetric analysis and elemental analysis.

Synthesis and Characterization of Some Novel Homo- and Hetero-Diradicals of Hydrazyl and Nitroxide Type

2007 ◽  
Vol 60 (3) ◽  
pp. 173 ◽  
Author(s):  
Petre Ionita ◽  
Floriana Tuna ◽  
Marius Andruh ◽  
Titus Constantinescu ◽  
Alexandru T. Balaban
Keyword(s):  
Free Radical ◽  
Potassium Permanganate ◽  
Lead Dioxide ◽  
Magnetic Behaviour ◽  
Synthesis And Characterization ◽  
Stable Free Radical ◽  
Ms Analysis ◽  
New Compounds

Starting from the well known stable free radical 2,2-diphenyl-1-picrylhydrazyl (DPPH; 2a) and its congener 2,2-diphenyl-1-(4-cyano-2,6-dinitrophenyl)hydrazyl 2b, or from their reduced hydrazine counterparts 1a,b, it was possible to obtain the p-quinonoid compounds 4a,b by oxidation with ceric (Ce4+) sulfate, which by reduction gave the corresponding hydroxyl derivatives 2-phenyl-2-(4-hydroxyphenyl)-1-picrylhydrazine 5a or 2-phenyl-2-(4-hydroxyphenyl)-1-(4-cyano-2,6-dinitrophenyl)hydrazine 5b. These hydroxyl derivatives (5a,b) react with 4-carboxy-TEMPO or 2,2-diphenyl-1-(4-carboxy-2,6-dinitrophenyl)hydrazine to form the corresponding esters 6a,b or 8a,b. These esters (6a,b and 8a,b) lead to the hybrid hetero diradicals (nitroxide–hydrazyl type) 7a,b or homo biradicals (hydrazyl–hydrazyl type) 9a,b by oxidation with lead dioxide or potassium permanganate. The new compounds were characterized by UV-vis, NMR, EPR, and MS analysis, and their magnetic behaviour was investigated.

scholarly journals Synthesis and Characterization of 9-Phenyl-9H-purin-6-amines from 5-Amino-1-phenyl-1H-imidazole-4-carbonitriles

2007 ◽  
Vol 4 (3) ◽  
pp. 372-375 ◽  
Author(s):  
Asieh Yahyazadeh ◽  
Fatemah Habibi
Keyword(s):  
Synthesis And Characterization ◽  
High Yields

9-Phenyl-9H-purin-6-amine derivatives have been synthesized in high yields by reaction between 5-amino-1-phenyl-1H-imidazole-4-carbonitrile with HC(OEt)3and Ac2O followed by reaction with ammonia.

Synthesis and characterization of ZnO nanoflakes anchored carbon nanoplates for antioxidant and anticancer activity in MCF7 cell lines

2019 ◽  
Vol 102 ◽  
pp. 536-540 ◽  
Author(s):  
Mariadhas Valan Arasu ◽  
A. Madankumar ◽  
J. Theerthagiri ◽  
Sunitha Salla ◽  
S. Prabu ◽  
...  
Keyword(s):  
Anticancer Activity ◽  
Cell Lines ◽  
Mcf7 Cell ◽  
Synthesis And Characterization ◽  
Zno Nanoflakes

Darstellung und Charakterisierung des Zwitterions S2C—C(NMe2)2; eine übergangsmetallinduzierte C—C-Kopplung. Komplexchemie der Zwitterionen S2C—C(NR2)2 / Synthesis and Characterization of the Zwitter Ion S2C —C(NMe2)2; a Transition Metal Induced C —C Coupling. Complex Chemistry of the Zwitter Ions S2C —C(NR2)2

1987 ◽  
Vol 42 (11) ◽  
pp. 1411-1418 ◽  
Author(s):  
Manfred L. Ziegler ◽  
Hannelore Weber ◽  
Bernhard Nuber ◽  
Orhan Serhadle
Keyword(s):  
Transition Metal ◽  
Synthesis And Characterization ◽  
X Ray ◽  
Zwitter Ion ◽  
Complex Chemistry ◽  
New Compounds

A transition metal induced C-C coupling by the reaction of W2(N(CH3)2)6, (4) and CS2 yielded the zwitter ion S2C-C(N(CH3)2)2 (1d) besides W2(N(CH3)2)2(CS2)2S4 (5). The com- plex chemistry of the zwitter ions 1d and S2CC(N(CH2)4X)2 (X = CH2, O) has been investigated by their reaction with (η5-C5H5)2Mo2(CO)4 (2) and (η5-C5H5)Mo(CO)3Cl (3). Reaction of the former led to complexes (η5-C5H5)Mo(CO)2(S2CR) (R = N(CH3)2, N(CH2)4X) and the new compounds [(η5-C5H5)Mo(CO)2(S2C-CR2)]+. X-ray structure analyses of 1d and ((η5-C5H5)Mo(CO)2(S2C-C(N(CH2)5)2)]⊕PF6⊖ (10b) are described.

Synthesis and characterization of Mannich bases of lawsone and their anticancer activity

2020 ◽  
Vol 50 (11) ◽  
pp. 1724-1735
Author(s):  
Pratik Nariya ◽  
Falguni Shukla ◽  
Hitarthi Vyas ◽  
Ranjitsinh Devkar ◽  
Sonal Thakore
Keyword(s):  
Anticancer Activity ◽  
Mannich Bases ◽  
Synthesis And Characterization

Synthesis and characterization of novel optically active poly(ester-imide-imine)s

e-Polymers ◽  
2009 ◽  
Vol 9 (1) ◽  
Author(s):  
Abdol Reza Hajipour ◽  
Parniyan Roosta ◽  
Saeed Zahmatkesh ◽  
Arnold E. Ruoho
Keyword(s):  
Amino Acids ◽  
Acetic Acid ◽  
Glacial Acetic Acid ◽  
Optically Active ◽  
Synthesis And Characterization ◽  
Interfacial Polycondensation ◽  
Thermal Stabilities ◽  
Amino Phenol ◽  
High Yields

Abstract N,N´-(3,3´,4,4´-Benzophenonetetracarboxylic)-3,3´,4,4´-diimido-di-Lamino acids (1a-1d) and N,N´-pyromelliticdiimido-di-L-amino acids (2a-2d) are prepared from the reaction of 3,3´,4,4´-benzenetetracarboxylic-3,3´,4,4´- dianhydride or pyromellitic dianhydride with the corresponding L-amino acids in a solution of glacial acetic acid/pyridine (3:2) at refluxing temperature. 4-(4-((4- Hydroxyphenylimino)methyl)benzylidene amino) phenol (3) is prepared from 4- amino phenol and terephthaldialdehyde in refluxing ethanol. Interfacial polycondensation method was used to prepare the corresponding polymers (PEII1-8) in two immiscible solvents (water/dichloromethane). The resulting poly(esterimide- imine)s (PEIIs) having good inherent viscosities (0.13-1.25 dl g-1), optical activity and thermal stabilities is obtained in high yields.

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