نتایج جستجو برای: 12 hydroxystigmast 4 en 3 one

تعداد نتایج: 4723448  

2011
Jerry P. Jasinski Ray J. Butcher H. S. Yathirajan B.K. Sarojini V. Musthafa Khaleel

In the title compound, C(15)H(11)ClO(2), the dihedral angle between the mean planes of the chloro-benzene and hy-droxy-benzene rings is 6.5 (6)°. The mean plane of the prop-2-en-1-one group makes an angle of 18.0 (1)° with the hy-droxy-phenyl ring and 11.5 (1)° with the chloro-phenyl ring. The crystal packing is stabilized by inter-molecular O-H⋯O hydrogen bonds, weak C-H⋯O, C-H⋯π and π-π stack...

2010
Grzegorz Dutkiewicz K. Veena B. Narayana H. S. Yathirajan Maciej Kubicki

The title compound, C(15)H(10)BrFO, is isostructural with (2E)-1-(4-chloro-phen-yl)-3-(4-fluoro-phen-yl)prop-2-en-1-one [Qiu et al. (2006 ▶). Acta Cryst. E62, o3525-o3526], but the structures of other dihalogen analogues, without fluorine, are different, although they are also isostructural within the series. The mol-ecule is approximately flat, the dihedral angle between the ring planes being ...

2010
Zainab Ngaini Siti Muhaini Haris Fadzillah Hasnain Hussain Ibrahim Abdul Razak Hoong-Kun Fun

In the title compound, C(21)H(24)O(3), inter-molecular O-H⋯O and C-H⋯O inter-actions form bifurcated acceptor bonds, generating R(2) (1)(6) ring motifs. These ring motifs link the mol-ecules into extended chains along [010]. The crystal structure is further stabilized by C-H⋯π inter-actions.

2008
N. Anuradha A. Thiruvalluvar M. Mahalinga R. J. Butcher

In the title mol-ecule, C(16)H(13)FOS, the dihedral angle between the two benzene rings is 8.68 (6)°. The H atoms of the central enone group are trans and one H atom is involved in a close intra-molecular C-H⋯O contact. The crystal structure is stabilized by weak C-H⋯π inter-actions.

2011
Jerry P. Jasinski Ray J. Butcher B. P. Siddaraju B. Narayana H. S. Yathirajan

The mean planes of the two benzene rings in the title compound, C(17)H(16)FNO, are twisted slightly, making a dihedral angle of 7.8 (1)°. The prop-2-en-1-one group is also twisted slightly with a C-C-C-O torsion angle of -11.6 (3)°. In the crystal, weak inter-molecular C-H⋯O inter-actions link pairs of mol-ecules, forming centrosymmetric dimers.

2011
Mehmet Akkurt Zeliha Baktır S. Samshuddin B. Narayana H. S. Yathirajan

In the title compound, C(24)H(20)N(2)O(3), the mean plane of the benzimidazole unit makes dihedral angles of 79.88 (11) and 85.44 (12)° with the benzene and 4-meth-oxy-benzene rings, respectively. The benzene and 4-meth-oxy-benzene rings maske a dihedral angle of 16.10 (14)°. A pair of inter-molecular N-H⋯O hydrogen bonds connects adjacent mol-ecules into an inversion dimer, generating an R(2) ...

2012
Chin Wei Ooi Hoong-Kun Fun Ching Kheng Quah Murugan Sathishkumar Alagusundaram Ponnuswamy

The title compound, C(21)H(19)ClN(2)OS, exists in a cis conformation with respect to the N=C bond [1.2608 (13) Å]. The cyclo-hexene ring adopts a distorted half-chair conformation. The thia-zolidine ring is close to being planar (r.m.s. deviation = 0.057 Å) and makes dihedral angles of 62.92 (6) and 56.32 (6)°, respectively, with the benzene ring and the chloro-substituted benzene ring. The dih...

2010
Jeshal G. Maheta Vijay M. Barot Mukesh M. Jotani Edward R. T. Tiekink

The benzene rings in the title compound, C(20)H(22)O(3), form a dihedral angle of 10.39 (8)°. Overall, the mol-ecule is approximately planar with the exception of one of the terminal methyl groups; excluding this group, the r.m.s. deviation for the remaining 22 non-H atoms is 0.0968 Å. The conformation about the C=C bond is E, and an intra-molecular O-H⋯O hydrogen bond leads to the formation of...

2009
Lei Wang Li-Ying Ma Yu-Ling Huang Bai-Yu Zheng

In the title compound, C(18)H(19)NO, the dihedral angle between 4-methyl-phenyl and 4-(dimethyl-amino)phenyl rings is 45.5 (3)°. The C-C=C-C torsion angle of 173.8 (3)° indicates that the mol-ecule adopts an E configuration. The dimethyl-amino group is nearly coplanar with the attached benzene ring, making a dihedral angle of 2.7 (3)°. Weak inter-molecular C-H⋯π inter-actions are observed in th...

2008
Hoong-Kun Fun P. S. Patil S. M. Dharmaprakash Suchada Chantrapromma

The title compound, C(17)H(15)BrO(2), consists of two substituted benzene rings connected by a prop-2-en-1-one group. The mol-ecule is nearly planar and adopts an E configuration. The dihedral angle between the two benzene rings is 8.51 (19)°. The enone plane makes dihedral angles of 11.06 (19) and 7.69 (19)°, respectively, with the bromo-phenyl and ethoxy-phenyl rings. The mol-ecules are linke...

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