نتایج جستجو برای: phenyl ring effect

تعداد نتایج: 1770371  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1371

the effect of the presence of perforations on he stresses of a plate is a problem which is of great interest in structural design and in the mathemattical theory of elasticity. among the many hole patterns that are likely to require consideration is the ring of equally spaced circular holes. the present worke investigates stress & strain analysis of a thin isotropic circular plate containing a ...

Journal: :journal of reports in pharmaceutical sciences 0
alireza aliabadi department of medicinal chemistry, faculty of pharmacy, kermanshah university of medical sciences, kermanshah 67145-1673, iran fariborz mosharafi zahra tayarani-najaran

cancer is a group of diseases characterized by uncontrolled proliferation of abnormal cells. because of the severe side effects and resistance to the traditional chemotherapeutic agents, the necessity for discovery of new anticancer drugs is a crucial topic. in the present study we synthesized new derivatives of 2-(4-fluorophenyl)- n -halophenylacetamide and assessed their cytotoxicity against ...

2011
Peter R. W. E. F. Keck Dieter Schollmeyer Stefan Laufer

The 4-chloro-phenyl residue in the title compound, C(20)H(16)ClNO, is oriented at a dihedral angle of 53.6 (3)° towards the phenyl ring and 42.0 (9)° towards the pyrrole ring of the pyrrolizine template. The phenyl ring is oriented at a dihedral angle of 45.4 (4)° towards the pyrrole ring.

2009
Hong Dae Choi Pil Ja Seo Byeng Wha Son Uk Lee

In the title compound, C(20)H(13)ClO(2)S, the O atom and the phenyl group of the phenyl-sulfinyl substituent lie on opposite sides of the plane of the benzofuran fragment; the S-bound phenyl ring is nearly perpendicular to this plane [80.87 (5)°]. The phenyl ring in the 2-position is rotated out of the benzofuran plane, making a dihedral angle of 17.43 (7)°. The crystal structure features π-π i...

Chalcone (1,3-diarylprop-2-en-1-one) derivatives have been introduced as selective cyclooxygenase-2 inhibitors. In the present study, anti-nociceptive and anti-inflammatory effects of eight novel compounds were evaluated in male mice and Wistar rats by using the writhing and formalin-induced paw edema tests respectively. The activities of the compounds were compared with celecoxib as a referenc...

2011
Kee-In Lee Hye-Rin Bin Do-Min Lee Chong-Hyeak Kim

In the title compound, C(26)H(20)BN(3)O, the B atom has tetra-hedral geometry and is linked to two phenyl rings, the O atom of the hy-droxy-pyrazole ring and the N atom of the pyridinyl ring. A six-membered BOCNCN ring forms by coordination of the B atom and the pyridinyl N atom. The BOCNCN ring has an envelope conformation [dihedral angle = 36.7 (1)° between the planar ring atoms and the flap]...

Journal: :Chemical & pharmaceutical bulletin 2000
Y Liao S Hendrata S Y Bae B Wang

A coumarin-based prodrug system has been recently developed in our laboratory for the preparation of esterase-sensitive prodrugs of amines, peptides, and peptidomimetics. The drug release rates from this prodrug system were found to be dependent on the structural features of the drug moiety. In certain cases, the release can be undesirably slow for drugs that are secondary amines with relativel...

Journal: :the iranian journal of pharmaceutical research 0
nan jiang college of pharmacy, yanbian university, no. 977, park road, yanji, jilin, 133002, china. xian-qing deng college of pharmacy, yanbian university, no. 977, park road, yanji, jilin, 133002, china. fu-nan li department of pharmacy, medical college of xiamen university, no. 168, daxue rd, xiamen, fujian, 361005, china. zhe-shan quan college of pharmacy, yanbian university, no. 977, park road, yanji, jilin, 133002, china.

considerable interest has been focused on the triazole structure, which has been known to possess a broad spectrum of biological activities such as antitumor, anti-inflammatory, antimicrobial, antiviral, and anticonvulsant activities. before this, several heterocyclic compounds containing triazole were synthesized that had shown considerable anticonvulsant activity. as part of our continuous re...

Journal: :Acta crystallographica. Section E, Crystallographic communications 2015
Ankur Trigunait Kannan Damodharan Bakthadoss Manickam Gunasekaran Krishnasamy

In the title compound, C26H25NO6S, the S atom shows a distorted tetra-hedral geometry, with O-S-O [119.46 (9)°] and N-S-C [107.16 (7)°] angles deviating from ideal tetra-hedral values, a fact attributed to the Thorpe-Ingold effect. The sulfonyl-bound phenyl ring forms dihedral angles of 41.1 (1) and 83.3 (1)°, respectively, with the formyl-phenyl and phenyl rings. The dihedral angle between for...

2009
Hong Dae Choi Pil Ja Seo Byeng Wha Son Uk Lee

The title compound, C(24)H(15)BrO(2)S·0.5C(6)H(6), crystallizes as a benzene hemisolvate. The O atom and the phenyl group of the phenyl-sulfinyl substituent lie on opposite sides of the plane of the naphthofuran fragment, and the phenyl ring is almost perpendicular to the plane of the naphthofuran fragment [83.78 (8)°] and is tilted slightly towards it. The 2-phenyl ring is rotated out of the n...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید