Concise Synthesis of Arnottin I and (-)-Arnottin II
Fujiko Konno; Tsutomu Ishikawa; Masatoshi Kawahata; Kentaro Yamaguchi; Journal of Organic Chemistry 71 (2006) 9818–9823; doi:10.1021/jo061905j

data_4022195
_publ_contact_author_address
;Graduate School of Pharmaceutical Sciences
Chiba University
Inage, Chiba 263-8522
Japan
;
_publ_contact_author_email       benti@p.chiba-u.ac.jp
_publ_contact_author_fax         81(43)2902910
_publ_contact_author_name        'Professor Tsutomu ISHIKAWA'
_publ_contact_author_phone       81(43)2902910
_publ_section_title
;
 Concise Synthesis of Arnottin I and (-)-Arnottin II
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              9818
_journal_page_last               9823
_journal_paper_doi               10.1021/jo061905j
_journal_volume                  71
_journal_year                    2006
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C20 H14 Br2 O7'
_chemical_formula_sum            'C20 H14 Br2 O7'
_chemical_formula_weight         526.13
_chemical_name_common            '(-)-Dibromodihydroarnottin II'
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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            4
_cell_length_a                   7.3016(10)
_cell_length_b                   8.4264(12)
_cell_length_c                   30.356(4)
_cell_measurement_reflns_used    2684
_cell_measurement_temperature    150
_cell_measurement_theta_max      23.71
_cell_measurement_theta_min      2.51
_cell_volume                     1867.7(5)
_computing_cell_refinement       'Bruker SMART'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device_type  'Bruker SMART 1000 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  0.0495
_diffrn_reflns_av_sigmaI/netI    0.0754
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       39
_diffrn_reflns_limit_l_min       -37
_diffrn_reflns_number            11263
_diffrn_reflns_theta_full        27.48
_diffrn_reflns_theta_max         27.48
_diffrn_reflns_theta_min         1.34
_exptl_absorpt_coefficient_mu    4.383
_exptl_absorpt_correction_T_max  0.8106
_exptl_absorpt_correction_T_min  0.2731
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   'SADABS Sheldrick 1996'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.871
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prismatic
_exptl_crystal_F_000             1040
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.05
_refine_diff_density_max         3.094
_refine_diff_density_min         -1.014
_refine_diff_density_rms         0.166
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.000(17)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     264
_refine_ls_number_reflns         4229
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0693
_refine_ls_R_factor_gt           0.0551
_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^)+(0.0851P)^2^+2.2977P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1428
_refine_ls_wR_factor_ref         0.1547
_reflns_number_gt                3522
_reflns_number_total             4229
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo061905jsi20060921_052302.cif
_cod_depositor_comments
;
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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
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_cod_database_code               4022195