Enantioselective Total Synthesis of Plectosphaeroic Acid B
Salman Y. Jabri; Larry E. Overman; Journal of the American Chemical Society 135 (2013) 4231–4234; doi:10.1021/ja401423j

data_4119495
_publ_section_title
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 Enantioselective Total Synthesis of Plectosphaeroic Acid B
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_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              4231
_journal_page_last               4234
_journal_paper_doi               10.1021/ja401423j
_journal_volume                  135
_journal_year                    2013
_chemical_absolute_configuration ad
_chemical_formula_sum            'C41 H56 N4 O10 Si'
_chemical_formula_weight         792.99
_chemical_name_systematic
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 ? 
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_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           SHELXTL
_cell_angle_alpha                90.00
_cell_angle_beta                 98.7267(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   13.9515(6)
_cell_length_b                   7.4841(3)
_cell_length_c                   20.7748(9)
_cell_measurement_reflns_used    9708
_cell_measurement_temperature    83(2)
_cell_measurement_theta_max      28.81
_cell_measurement_theta_min      2.29
_cell_volume                     2144.08(16)
_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      83(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.947
_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  0.0155
_diffrn_reflns_av_sigmaI/netI    0.0191
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            26175
_diffrn_reflns_theta_full        25.50
_diffrn_reflns_theta_max         28.89
_diffrn_reflns_theta_min         1.65
_exptl_absorpt_coefficient_mu    0.114
_exptl_absorpt_correction_T_max  0.9796
_exptl_absorpt_correction_T_min  0.9508
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.228
_exptl_crystal_density_meas      ?
_exptl_crystal_description       prism
_exptl_crystal_F_000             848
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.642
_refine_diff_density_min         -0.325
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.02(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     519
_refine_ls_number_reflns         10377
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0370
_refine_ls_R_factor_gt           0.0358
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0620P)^2^+0.5170P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0983
_refine_ls_wR_factor_ref         0.0993
_reflns_number_gt                10050
_reflns_number_total             10377
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja401423j_si_002.cif
_cod_data_source_block           leo264
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not_measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
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_cod_database_code               4119495