Enantioselective photocycloaddition mediated by chiral Brønsted acids: asymmetric synthesis of the rocaglamides.
Gerard, Baudouin; Sangji, Sheharbano; O'Leary, Daniel J; Porco, Jr, John A; Journal of the American Chemical Society 128 (2006) 7754–7755; doi:10.1021/ja062621j

data_4101333
_publ_section_title
;
 Enantioselective photocycloaddition mediated by chiral Br\/onsted
 acids: asymmetric synthesis of the rocaglamides.
;
_journal_issue                   24
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              7754
_journal_page_last               7755
_journal_paper_doi               10.1021/ja062621j
_journal_volume                  128
_journal_year                    2006
_chemical_formula_moiety         'C61 H42  O4'
_chemical_formula_sum            'C125 H90 Cl6 O8'
_chemical_formula_weight         1932.67
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 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                 99.148(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   25.6030(13)
_cell_length_b                   16.0366(10)
_cell_length_c                   27.6197(16)
_cell_measurement_reflns_used    6330
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      21.30
_cell_measurement_theta_min      2.21
_cell_volume                     11196.0(11)
_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, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker X8 APEX II diffractometer'
_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  0.0450
_diffrn_reflns_av_sigmaI/netI    0.0677
_diffrn_reflns_limit_h_max       22
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       28
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            34127
_diffrn_reflns_theta_full        21.49
_diffrn_reflns_theta_max         21.49
_diffrn_reflns_theta_min         1.49
_exptl_absorpt_coefficient_mu    0.208
_exptl_absorpt_correction_T_max  0.9795
_exptl_absorpt_correction_T_min  0.9214
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.147
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             4024
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.682
_refine_diff_density_min         -0.451
_refine_diff_density_rms         0.069
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.08(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.075
_refine_ls_hydrogen_treatment    riding
_refine_ls_matrix_type           full
_refine_ls_number_parameters     1252
_refine_ls_number_reflns         12712
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.075
_refine_ls_R_factor_all          0.0912
_refine_ls_R_factor_gt           0.0768
_refine_ls_shift/su_max          0.042
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1442P)^2^+16.3411P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2166
_refine_ls_wR_factor_ref         0.2298
_reflns_number_gt                10142
_reflns_number_total             12712
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja062621jsi20060414_123140.cif
_cod_data_source_block           porco59
_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      C2
_cod_original_formula_sum        'C125 H90 CL6 O8'
_cod_database_code               4101333