Synthesis and revision of stereochemistry of rubescensin S
Zhang, Mei; Zhang, Yangming; Lu, Wei; Nan, Fa-Jun; Organic & Biomolecular Chemistry 9 (2011) 4436–; doi:10.1039/c1ob05611e

data_7151899
_publ_section_title
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 Synthesis and revision of stereochemistry of rubescensin S
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_journal_issue                   12
_journal_name_full               'Organic &amp; Biomolecular Chemistry'
_journal_page_first              4436
_journal_paper_doi               10.1039/c1ob05611e
_journal_volume                  9
_journal_year                    2011
_chemical_absolute_configuration ad
_chemical_formula_sum            'C20 H28 O7'
_chemical_formula_weight         380.42
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_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                 104.267(13)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   6.526(6)
_cell_length_b                   11.830(10)
_cell_length_c                   12.312(11)
_cell_measurement_reflns_used    2045
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      55.134
_cell_measurement_theta_min      4.849
_cell_volume                     921.2(14)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.954
_diffrn_measured_fraction_theta_max 0.954
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0464
_diffrn_reflns_av_sigmaI/netI    0.0905
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            4385
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         25.50
_diffrn_reflns_theta_min         1.71
_exptl_absorpt_coefficient_mu    0.103
_exptl_absorpt_correction_T_max  0.7456
_exptl_absorpt_correction_T_min  0.5915
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.372
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             408
_exptl_crystal_size_max          0.157
_exptl_crystal_size_mid          0.127
_exptl_crystal_size_min          0.023
_refine_diff_density_max         0.187
_refine_diff_density_min         -0.212
_refine_diff_density_rms         0.053
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   2(2)
_refine_ls_extinction_coef       0.005(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   1.164
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     251
_refine_ls_number_reflns         2821
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.164
_refine_ls_R_factor_all          0.1322
_refine_ls_R_factor_gt           0.0860
_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^)+(0.0681P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1490
_refine_ls_wR_factor_ref         0.1641
_reflns_number_gt                1825
_reflns_number_total             2821
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c1ob05611e.txt
_cod_data_source_block           mo_dm1083_0m
_cod_depositor_comments
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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 1555 2011-01-17 13:19:09Z saulius 
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_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               7151899