Pentacyclic Furanosteroids: The Synthesis of Potential Kinase Inhibitors Related to Viridin and Wortmannolone
Yunhui Lang; Fabio E. S. Souza; Xinshe Xu; Nicholas J. Taylor; Abdeljalil Assoud; Russell Rodrigo; Journal of Organic Chemistry 74 (2009) 5429–5439; doi:10.1021/jo900922q

data_4024721
_publ_section_title
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Pentacyclic Furanosteroids: The Synthesis of Potential Kinase Inhibitors
Related to Viridin and Wortmannolone
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_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              5429
_journal_page_last               5439
_journal_paper_doi               10.1021/jo900922q
_journal_volume                  74
_journal_year                    2009
_chemical_formula_sum            'C22 H24 O5 Si'
_chemical_formula_weight         396.50
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 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                 122.394(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   17.0031(5)
_cell_length_b                   10.8154(3)
_cell_length_c                   12.0798(4)
_cell_measurement_temperature    180(2)
_cell_volume                     1875.73(10)
_computing_cell_refinement       SAINT
_computing_data_collection       SMART
_computing_data_reduction        SAINT
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      180(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker APEX'
_diffrn_measurement_method       Omega
_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  0.0241
_diffrn_reflns_av_sigmaI/netI    0.0322
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            7593
_diffrn_reflns_theta_full        30.00
_diffrn_reflns_theta_max         30.00
_diffrn_reflns_theta_min         2.36
_exptl_absorpt_coefficient_mu    0.158
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.404
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'Needle plate fragment'
_exptl_crystal_F_000             840
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.21
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.291
_refine_diff_density_min         -0.287
_refine_diff_density_rms         0.055
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.03(8)
_refine_ls_extinction_coef       0.0059(4)
_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   1.468
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     258
_refine_ls_number_reflns         5067
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.468
_refine_ls_R_factor_all          0.0356
_refine_ls_R_factor_gt           0.0346
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0152P)^2^+0.2955P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0717
_refine_ls_wR_factor_ref         0.0720
_reflns_number_gt                4890
_reflns_number_total             5067
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo900922q_si_005.cif
_cod_data_source_block           jalil
_cod_depositor_comments
;
The following automatic conversions were performed:
'_exptl_absorpt_correction_type' value 'None' changed to 'none' according
to '/home/saulius/struct/CIF-dictionaries/cif_core.dic' dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
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_cod_original_sg_symbol_H-M      Cc
_cod_database_code               4024721