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Synthesis of Benzyl 4-Hydroxy-5-iodo-2,3-dimethoxy-6-methylbenzoate: The Aromatic Unit of Calicheamicin gamma1
Alvarenga, Elson Santiago de;Mann, John;
Journal of the Brazilian Chemical Society , 1999, DOI: 10.1590/S0103-50531999000200006
Abstract: orsellinic acid (6) was benzylated, and the benzyl 4-benzyloxy-2-hydroxy-6-methylbenzoate (7) was then elaborated into the title compound (2), which is the aromatic constituent of calicheamicin g1i.
Synthesis of Benzyl 4-Hydroxy-5-iodo-2,3-dimethoxy-6-methylbenzoate: The Aromatic Unit of Calicheamicin g1  [cached]
Alvarenga Elson Santiago de,Mann John
Journal of the Brazilian Chemical Society , 1999,
Abstract: Orsellinic acid (6) was benzylated, and the benzyl 4-benzyloxy-2-hydroxy-6-methylbenzoate (7) was then elaborated into the title compound (2), which is the aromatic constituent of calicheamicin gamma1I.
SYNTHESIS OF NEW RING SYSTEM 6,7,8,9 TETRA HYDRO-5H-5-(2'- HYDROXY PHENYL)-2-(4'-SOME SUBSTITUTED BENZYLIDINE)-3-(4- NITROPHENYL AMINO) THIAZOLO QUINAZOLINE  [PDF]
P. Vijayaraj Kumar *
International Journal of Pharmacy and Technology , 2010,
Abstract: A convenient synthesis of the 6,7,8,9 tetra hydro-5H-5-(2'-hydroxy phenyl)-2-(4'-some substituted benzylidine)-3-(4-nitrophenyl amino) thiazolo quinazoline ring system is reported. Our syntheticapproach consisted of the annelation of a 4-hydroxy phenyl 3, 4, 5, 6, 7, 8-hexahydro quinazolin-2-thione moiety using chloroacetic acid as building blocks. The procedure needs the formation of the thiazolo quinazoline derivatives by substituted benzaldehyde and p-nitro aniline.
4-Nitrophenyl 2-methylbenzoate
Uzma Bibi,Humaira M. Siddiqi,Michael Bolte,Zareen Akhter
Acta Crystallographica Section E , 2009, DOI: 10.1107/s1600536809046005
Abstract: The title compound, C14H11NO4, crystallizes with two molecules in the asymmetric unit. The major conformational difference between these two molecules is the dihedral angle between the aromatic rings, namely 36.99 (5) and 55.04 (5)°. The nitro groups are coplanar with the phenyl rings to which they are attached, the O—N—C—C torsion angles being 1.9 (3) and 1.0 (3)° in the two molecules.
Crystal structural studies of ethyl-5-(4-chlorophenylsulfonyl)-4-hydroxy-2, 6-dip-tolyl-1, 2, 5, 6-tetrahydropyridine-3-carboxylate and diethyl 4-hydroxy-2-(4-nitrophenyl)-5-(phenylsulfonyl)-6-(phenylsulfonylmethyl)cyclohexa-3,6-diene-1,3-dicarboxylate  [cached]
J. Suresh,P.S. Harikrishnan,R. Vishnu Priya,S. Perumal
Journal of Molecular Biochemistry , 2012,
Abstract: The crystal structures of trans,trans-Ethyl-5-(4-chlorophenylsulfonyl)-4-hydroxy-2,6-dip-tolyl-1,2,5,6-tetrahydropyridine-3-carboxylate (Ia) and cis-Diethyl 4-hydroxy-2-(4-nitrophenyl)-5-(phenylsulfonyl)-6-(phenylsulfonylmethyl)cyclohexa-3,6-diene-1,3-dicarboxylate (Ib) were elucidated by single crystal X ray diffraction. Compound (Ia) C28H28Cl NO5S, crystallizes in the monoclinic system, space group P 21/c, with a = 9.4530(7) , b = 25.366(2) , c = 11.4353(8) , β = 103.092(7)°, V = 2670 (3) 3 and Z = 4. The compound (Ib), C31H29N1O11S2, crystallizes in the monoclinic system, space group P 21/c, with a = 21.179(4) , b = 8.4998(16) , c = 17.347(3) , β = 102.563(3)°, V = 3048.0(10) 3 and Z = 4. The central piperidine ring of compound (Ia) adopts the sofa conformation and the central cyclohexadiene ring of compound (Ib) adopts the boat conformation. Details of the compounds preparation, crystal structures and hydrogen bonding interactions of the compounds are discussed.
3-Chlorophenyl 4-methylbenzoate
B. Thimme Gowda,Sabine Foro,K. S. Babitha,Hartmut Fuess
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808019351
Abstract: The crystal structure of the title compound 3CP4MBA, C14H11ClO2, resembles those of 3-methylphenyl 4-methylbenzoate (3MP4MBA), 4-methylphenyl 4-methylbenzoate (4MP4MBA), 4-methylphenyl 4-chlorobenzoate (4CP4MBA) and other aryl benzoates with similar bond parameters. The dihedral angle between the benzene rings in 3CP4MBA is 71.75 (7)°, compared with 56.82 (7)° in 3MP4MBA and 63.57 (5)° in 4MP4MBA. In the crystal structure, the molecules are aligned with their long axis approximately along the [101] direction and stacked along the c axis.
3,5-Dichlorophenyl 4-methylbenzoate
B. Thimme Gowda,Sabine Foro,K. S. Babitha,Hartmut Fuess
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808022277
Abstract: The structure of the title compound, C14H10Cl2O2, resembles those of 3-chlorophenyl 4-methylbenzoate, 2,6-dichlorophenyl 4-methylbenzoate and 2,4-dichlorophenyl 4-methylbenzoate, with similar bond parameters. The dihedral angle between the benzene and benzoyl rings is 48.81 (6)°.
3,3′-[(4-Nitrophenyl)methylene]bis(4-hydroxy-2H-chromen-2-one)
N. Ravikumar,G. Gopikrishna,K. Anand Solomon
Acta Crystallographica Section E , 2012, DOI: 10.1107/s1600536811054778
Abstract: The molecular conformation of the title compound, C25H15NO8, is stabilized by strong intramolecular O—H...O hydrogen bonds, resulting in the formation of S11(7) ring motifs. In the crystal, π–π stacking interactions are observed between adjacent nitrobenzene and pyranone rings with a centroid–centroid distance of 3.513 (12) . The dihedral angles between the nitrobenzene ring and the coumarin ring systems are 65.61 (8) and 66.11 (8)° while the coumarin ring systems are inclined at 65.69 (8)°.
(S)-2-[(2R,3S)-2-Ammonio-3-hydroxy-3-(4-nitrophenyl)propanamido]-4-methylpentanoate monohydrate  [cached]
Kang-Hui Yang,Xun Li,Jian-Zhi Gong,Hao Fang
Acta Crystallographica Section E , 2008, DOI: 10.1107/s1600536808039056
Abstract: The structure of the title compound, C15H21N3O6·H2O, is of interest with respect to assumed anticancer activity. The title molecules are linked through intermolecular O—H...O hydrogen-bonded chains along the a axis. These chains are connected by intermolecular N—H...O hydrogen bonds through the crystallographic screw axis along [010], forming layers, which are stabilized by other N—H...O bonds with water O atoms as acceptors and O—H...O bonds with water H atoms as donors. The H atoms of the protonated amino cation are also involved in intermolecular N—H...O bonding interactions.
3-Hydroxy-4-{[(3-nitrophenyl)imino]methyl}phenyl Tetradecanoate  [PDF]
Sie-Tiong Ha,Siew-Teng Ong,Yee-Ting Chong,Guan-Yeow Yeap
Molbank , 2009, DOI: 10.3390/m631
Abstract: A new Schiff base ester, 3-hydroxy-4-{[(3-nitrophenyl)imino]methyl}phenyl tetradecanoate, was synthesized and its IR, 1H NMR, 13C NMR and MS spectroscopic data are presented.
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