Total Synthesis of Norbadione A
Yann Bourdreux; Stéphanie Nowaczyk; Célia Billaud; Aurélie Mallinger; Catherine Willis; Marine Desage-El Murr; Loïc Toupet; Claude Lion; Thierry Le Gall; Charles Mioskowski; Journal of Organic Chemistry 73 (2008) 22–26; doi:10.1021/jo702106u

data_4023181
_publ_section_title
;
 Total Synthesis of Norbadione A
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              22
_journal_page_last               26
_journal_paper_doi               10.1021/jo702106u
_journal_volume                  73
_journal_year                    2008
_chemical_formula_sum            'C22 H20 O7'
_chemical_formula_weight         396.38
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/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                 90.760(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   31.7320(10)
_cell_length_b                   8.9278(3)
_cell_length_c                   14.0998(5)
_cell_measurement_temperature    293(2)
_cell_volume                     3994.1(2)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Nonius (1999)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_molecular_graphics    'PLATON_(Spek, 1998)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR-97_(Altomare & al., 1998)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 19.24
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  Nonius_KappaCCD
_diffrn_measurement_method       'Area detector scans (see text)'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0000
_diffrn_reflns_av_sigmaI/netI    0.0495
_diffrn_reflns_limit_h_max       41
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            4562
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.37
_exptl_absorpt_coefficient_mu    0.099
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.318
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1664
_exptl_crystal_size_max          0.34
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.330
_refine_diff_density_min         -0.288
_refine_diff_density_rms         0.044
_refine_ls_extinction_coef       0.0063(12)
_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   1.030
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     263
_refine_ls_number_reflns         4562
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.030
_refine_ls_R_factor_all          0.0981
_refine_ls_R_factor_gt           0.0610
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0924P)^2^+2.6190P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1640
_refine_ls_wR_factor_ref         0.1931
_reflns_number_gt                2946
_reflns_number_total             4562
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo702106u-File001.cif
_cod_data_source_block           sn
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 

2020-10-30
Z value and formula fixed to values more according to usual
chemical conventions.                 miguel
;
_cod_original_sg_symbol_H-M      'C 2/c'
_cod_original_formula_sum        'C44 H40 O14'
_cod_original_formula_units_Z    4
_cod_original_formula_weight     792.76
_cod_database_code               4023181