Zobrazeno 1 - 10
of 201
pro vyhledávání: '"Nighat Afza"'
Autor:
Muhammad Aslam, Itrat Anis, Nighat Afza, Lubna Iqbal, Samina Iqbal, Ajaz Hussain, Rashad Mehmood, Muhammad Tahir Hussain, Muhammad Khalid, Haq Nawaz
Publikováno v:
Journal of Saudi Chemical Society, Vol 20, Iss 1, Pp 45-48 (2016)
Three biologically active new Schiff bases, 2-[(3-hydroxybenzylidene)amino]phenol 5, 2-[(4-hydroxybenzylidene)amino]phenol 6 and 4-[(2-hydroxyphenylimino)methyl]benzene-1,3-diol 7, were synthesized by the reaction of 2-aminophenol 1 with three differ
Externí odkaz:
https://doaj.org/article/80948a5bf1454337bd64ee683d148c0e
Autor:
Muhammad Aslam, Itrat Anis, Nighat Afza, Rashad Mehmood, Ajaz Hussain, Tanveer Hussain Bokhari, Muhammad Tahir Hussain, Haq Nawaz, Muhammad Khalid
Publikováno v:
Journal of Saudi Chemical Society, Vol 19, Iss 3, Pp 322-326 (2015)
A ligand L has been synthesized by the condensation of 4-chlorobenzaldehyde and 2-amino-5-chlorobenzophenone. The complexes 1–5 of Pb+2, Ni+2, Co+2, Cu+2 and Cd+2 with ligand were prepared. The newly synthesized ligand L and its complexes 1–5 wer
Externí odkaz:
https://doaj.org/article/480dd771f5d8452a8be9bb677c4899ee
Autor:
Nighat Afza, Lubna Iqbal, Abdul Malik, Ghada Ahmed Fawzy, Azza Muhammed El-Shafae, Shagufta Perveen, Areej Mohammad Al-Taweel, Mehreen Latif
Publikováno v:
Molecules, Vol 17, Iss 3, Pp 2675-2682 (2012)
Nine compounds have been isolated for the first time from Celtis africana, namely trans-N-coumaroyltyramine (1), trans-N-feruloyltyramine (2), trans-N-caffeoyltyramine (3), lauric acid (4), oleic acid (5), palmitic acid (6), lupeol (7), β-sitosterol
Externí odkaz:
https://doaj.org/article/eec25e732cb7492fa84a2972f8b0d8bb
Autor:
Sher Bahadar Khan, Mehreen Latif, Lubna Iqbal, Nighat Afza, Abdul Malik, Ijaz Ahmad, Itrat Fatima, Atia-tun Noor
Publikováno v:
Molecules, Vol 12, Iss 7, Pp 1447-1454 (2007)
Abstract: New flavonoidal glucosides leufolins A (1) and B (2), have been isolated from the ethyl acetate soluble fraction of the whole plants of Leucas urticifolia. Their structures were elucidated on the basis of extensive analysis of nuclear magne
Externí odkaz:
https://doaj.org/article/4b75b2337167494e8e8fd3c011468be1
Publikováno v:
Molecules, Vol 12, Iss 2, Pp 155-162 (2007)
Two new oxindole alkaloids isatinone A (1) and B (2) have been isolated from Isatis costata, along with the known trisindoline. Their structures have been assigned on the basis of spectroscopic techniques and chemical studies. Both new compounds show
Externí odkaz:
https://doaj.org/article/dfe4c7ec41ec429190bfe489a205d08e
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 5, Pp m670-m670 (2012)
In the title compound, [Cu(C12H18N2O2)]·0.25H2O, the coordination of the O,N,N′,O′-tetradentate ligand results in a cis-CuN2O2 square-planar geometry for the metal ion and the presence of two six-membered and one five-membered chelate rings. The
Externí odkaz:
https://doaj.org/article/9190c1bd9a794d7789383cd6e8dc389b
Publikováno v:
Molbank, Vol 2012, Iss 2, p M756 (2012)
Novel 7-{[2-(4-hydroxyphenyl)methylidene]amino}-1,3-thiazol-4-yl)-2-(methoxyimino)acetyl]amino}-3-{[(2-methyl-5,6-dioxo-1,2,5,6-tetrahydro-1,2,4-triazin-3-yl)sulfanyl]methyl}-8-oxo-5-thia-1azabicyclo [4.2.0]oct-2-ene-2-carboxylic acid was prepared by
Externí odkaz:
https://doaj.org/article/13ecdfdda33e42dd97f8ed1b1f486bc5
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 3, Pp o644-o644 (2012)
In the title compound, C20H13Cl2NO, the C=N bond adopts an E conformation. The chloro-substituted rings form a dihedral angle of 11.99 (9)° with each other and form dihedral angles of 74.95 (9) and 83.26 (10)° with the unsubstituted ring. In the cr
Externí odkaz:
https://doaj.org/article/04011bfd0e664e549077c1a01806369d
Publikováno v:
Acta Crystallographica Section E, Vol 68, Iss 2, Pp o352-o352 (2012)
In the title compound, C19H18N4O3, the pyrazole ring is oriented at dihedral angles of 41.12 (7) and 12.25 (10)°, respectively, with respect to the planes of the phenyl and benzene rings. Intramolecular N—H...O and O—H...O hydrogen bonds generat
Externí odkaz:
https://doaj.org/article/1af44fb1337a4322a1f0b6cb6a4f9245
Publikováno v:
Acta Crystallographica Section E, Vol 67, Iss 1, Pp o172-o173 (2011)
The title compound, C23H19NO5, was prepared by esterification of 2,2-bis(hydroxymethyl)-2,3-dihydro-1H-pyrrolizin-1-one with benzoyl chloride in pyridine·The pyrrolizine ring system is approximately planar with a maximum deviation of 0.008 (2) Å fr
Externí odkaz:
https://doaj.org/article/de8900a946634e7cac38877c5bb466db