Asymmetric synthesis of the AB ring system of lactonamycin.
Kelly, T. Ross; Cai, Xiaolu; Tu, Bin; Elliott, Eric L.; Grossmann, Gilles; Laurent, Pierre; Organic letters 6 (2004) 4953–4956; doi:10.1021/ol047922h

data_1506921
_publ_section_title
;
 Asymmetric synthesis of the AB ring system of lactonamycin.
;
_journal_issue                   26
_journal_name_full               'Organic letters'
_journal_page_first              4953
_journal_page_last               4956
_journal_paper_doi               10.1021/ol047922h
_journal_volume                  6
_journal_year                    2004
_chemical_formula_sum            'C8 H10 O8'
_chemical_formula_weight         234.16
_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                 91.6240(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.0511(5)
_cell_length_b                   14.5143(10)
_cell_length_c                   8.4402(6)
_cell_measurement_reflns_used    4536
_cell_measurement_temperature    193(2)
_cell_measurement_theta_max      28.32
_cell_measurement_theta_min      2.41
_cell_volume                     985.89(12)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_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      193(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega 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  0.0251
_diffrn_reflns_av_sigmaI/netI    0.0314
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            7385
_diffrn_reflns_theta_full        28.32
_diffrn_reflns_theta_max         28.32
_diffrn_reflns_theta_min         2.53
_exptl_absorpt_coefficient_mu    0.145
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.578
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             488
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.3
_refine_diff_density_max         0.335
_refine_diff_density_min         -0.213
_refine_diff_density_rms         0.064
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.0(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     297
_refine_ls_number_reflns         4618
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.0358
_refine_ls_R_factor_gt           0.0340
_refine_ls_shift/su_max          0.007
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0563P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0838
_refine_ls_wR_factor_ref         0.0850
_reflns_number_gt                4346
_reflns_number_total             4618
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol047922hsi20041008_035904.cif
_cod_data_source_block           39
_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_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               1506921