Studies on the Total Synthesis of Lactonamycin: Construction of Model ABCD Ring Systems
David A. Henderson; Philip N. Collier; Gregoire Pavé; Paula Rzepa; Andrew J. P. White; Jeremy N. Burrows; Anthony G. M. Barrett; Journal of Organic Chemistry 71 (2006) 2434–2444; doi:10.1021/jo052637c

data_4021580
_publ_section_title
;
 Studies on the Total Synthesis of Lactonamycin:
 Construction of Model ABCD Ring Systems
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              2434
_journal_page_last               2444
_journal_paper_doi               10.1021/jo052637c
_journal_volume                  71
_journal_year                    2006
_chemical_formula_sum            'C18 H18 O6'
_chemical_formula_weight         330.32
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 100.850(12)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   15.2133(14)
_cell_length_b                   11.0199(10)
_cell_length_c                   10.072(2)
_cell_measurement_reflns_used    23
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      24.91
_cell_measurement_theta_min      12.48
_cell_volume                     1658.4(4)
_computing_cell_refinement       'Bruker XSCANS'
_computing_data_collection       'Bruker XSCANS'
_computing_data_reduction        'Bruker SHELXTL'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'Bruker P4'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0617
_diffrn_reflns_av_sigmaI/netI    0.0337
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            2610
_diffrn_reflns_theta_full        59.98
_diffrn_reflns_theta_max         59.98
_diffrn_reflns_theta_min         4.99
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.833
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.323
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       blocks
_exptl_crystal_F_000             696
_exptl_crystal_size_max          0.67
_exptl_crystal_size_mid          0.60
_exptl_crystal_size_min          0.50
_refine_diff_density_max         0.258
_refine_diff_density_min         -0.286
_refine_diff_density_rms         0.056
_refine_ls_extinction_coef       0.050(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   1.068
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     218
_refine_ls_number_reflns         2448
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.068
_refine_ls_R_factor_all          0.0818
_refine_ls_R_factor_gt           0.0709
_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^)+(0.1095P)^2^+0.8119P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1911
_refine_ls_wR_factor_ref         0.2003
_reflns_number_gt                1998
_reflns_number_total             2448
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo052637csi20051223_025640_3.cif
_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 
;
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4021580