A facile total synthesis of drospirenone isomers containing 14β-hydrogen configuration.
Wan, Wen; Ma, Guobin; Gao, Wei; Wang, Jing; Li, Lei; Rao, Shangqin; Zheng, Chunfang; Jiang, Haizhen; Deng, Hongmei; Hao, Jian; Organic & biomolecular chemistry 11 (2013) 6597–6603; doi:10.1039/c3ob41211c

data_7153089
_publ_section_title
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 A facile total synthesis of drospirenone isomers containing 14\b-hydrogen
 configuration.
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_journal_issue                   38
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              6597
_journal_page_last               6603
_journal_paper_doi               10.1039/c3ob41211c
_journal_volume                  11
_journal_year                    2013
_chemical_formula_sum            'C20 H28 O2'
_chemical_formula_weight         300.42
_space_group_IT_number           4
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.176(8)
_cell_length_b                   11.293(15)
_cell_length_c                   12.236(16)
_cell_measurement_reflns_used    4600
_cell_measurement_temperature    273(2)
_cell_measurement_theta_max      17.759
_cell_measurement_theta_min      2.496
_cell_volume                     853.4(19)
_computing_cell_refinement       SAINT
_computing_data_collection       SMART
_computing_data_reduction        SAINT
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      273(2)
_diffrn_measured_fraction_theta_full 0.923
_diffrn_measured_fraction_theta_max 0.923
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       \w
_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  0.0852
_diffrn_reflns_av_sigmaI/netI    0.1846
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            3958
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         25.00
_diffrn_reflns_theta_min         2.45
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_T_max  0.9963
_exptl_absorpt_correction_T_min  0.9855
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_density_diffrn    1.169
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             328
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.171
_refine_diff_density_min         -0.208
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1(5)
_refine_ls_extinction_coef       0.035(7)
_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   0.896
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     207
_refine_ls_number_reflns         2089
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      0.896
_refine_ls_R_factor_all          0.1648
_refine_ls_R_factor_gt           0.0787
_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^)+(0.0645P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1571
_refine_ls_wR_factor_ref         0.1937
_reflns_number_gt                902
_reflns_number_total             2089
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3ob41211c.txt
_cod_data_source_block           a
_cod_depositor_comments
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The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_cell_volume        853.5(19)
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               7153089