Synthesis, modeling, and crystallographic study of 3,4-disubstituted-1,2,5-oxadiazoles and evaluation of their ability to decrease STAT3 activity
Shin, Dae-Seop; Masciocchi, Daniela; Gelain, Arianna; Villa, Stefania; Barlocco, Daniela; Meneghetti, Fiorella; Pedretti, Alessandro; Han, Young-Min; Han, Dong Cho; Kwon, Byoung-Mog; Legnani, Laura; Toma, Lucio; MedChemComm 1 (2010) 156–; doi:10.1039/c0md00057d

data_7113086
_publ_section_title
;
 Synthesis, modeling, and crystallographic study of
 3,4-disubstituted-1,2,5-oxadiazoles and evaluation of their ability to
 decrease STAT3 activity
;
_journal_issue                   2
_journal_name_full               MedChemComm
_journal_page_first              156
_journal_paper_doi               10.1039/c0md00057d
_journal_volume                  1
_journal_year                    2010
_chemical_formula_sum            'C16 H10 Cl F3 N4 O2'
_chemical_formula_weight         382.73
_chemical_name_common            avs-0288
_space_group_IT_number           14
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 99.570(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.064(3)
_cell_length_b                   14.500(3)
_cell_length_c                   12.384(3)
_cell_measurement_temperature    293(2)
_cell_volume                     1605.0(7)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.1344
_diffrn_reflns_av_sigmaI/netI    0.1212
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -1
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -1
_diffrn_reflns_number            3916
_diffrn_reflns_theta_full        25.96
_diffrn_reflns_theta_max         25.97
_diffrn_reflns_theta_min         2.17
_exptl_absorpt_coefficient_mu    0.288
_exptl_crystal_density_diffrn    1.568
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             776
_exptl_crystal_size_max          0.33
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.393
_refine_diff_density_min         -0.432
_refine_diff_density_rms         0.130
_refine_ls_extinction_coef       0.012(3)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.972
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     276
_refine_ls_number_reflns         3166
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.1771
_refine_ls_R_factor_gt           0.0493
_refine_ls_shift/su_max          0.156
_refine_ls_shift/su_mean         0.026
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0897P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1230
_reflns_number_gt                1376
_reflns_number_total             3166
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c0md00057d.txt
_cod_data_source_block           avs2
_cod_original_cell_volume        1621.6(7)
_cod_database_code               7113086