Enantioselective Total Syntheses of Nankakurines A and B: Confirmation of Structure and Establishment of Absolute Configuration
Bradley L. Nilsson; Larry E. Overman; Javier Read de Alaniz; Jason M. Rohde; Journal of the American Chemical Society 130 (2008) 11297–11299; doi:10.1021/ja804624u

data_4108255
_publ_section_title
;
 Enantioselective Total Syntheses of Nankakurines A and B: Confirmation of
 Structure and Establishment of Absolute Configuration
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              11297
_journal_page_last               11299
_journal_paper_doi               10.1021/ja804624u
_journal_volume                  130
_journal_year                    2008
_chemical_formula_sum            'C30 H38 N2 O2'
_chemical_formula_weight         458.62
_chemical_name_systematic
; 
 ? 
;
_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   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXTL
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.9567(3)
_cell_length_b                   15.2992(5)
_cell_length_c                   16.3935(5)
_cell_measurement_reflns_used    9800
_cell_measurement_temperature    103(2)
_cell_measurement_theta_max      33.48
_cell_measurement_theta_min      2.39
_cell_volume                     2497.21(13)
_computing_cell_refinement       'Bruker SMART APEX/SAINT'
_computing_data_collection       'Bruker SMART APEX'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'Bruker SHELXTL'
_computing_structure_solution    'Bruker SHELXTL'
_diffrn_ambient_temperature      103(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART APEXII CCD'
_diffrn_measurement_method       '\w and \f'
_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  0.0233
_diffrn_reflns_av_sigmaI/netI    0.0156
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       21
_diffrn_reflns_limit_k_min       -21
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            40657
_diffrn_reflns_theta_full        30.51
_diffrn_reflns_theta_max         30.51
_diffrn_reflns_theta_min         2.39
_diffrn_standards_decay_%        '< 1.0'
_exptl_absorpt_coefficient_mu    0.076
_exptl_absorpt_correction_T_max  0.9843
_exptl_absorpt_correction_T_min  0.9732
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Bruker SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.220
_exptl_crystal_density_meas      0
_exptl_crystal_description       prism
_exptl_crystal_F_000             992
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.21
_refine_diff_density_max         0.405
_refine_diff_density_min         -0.163
_refine_diff_density_rms         0.043
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1.3(6)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.054
_refine_ls_hydrogen_treatment    refall
_refine_ls_matrix_type           full
_refine_ls_number_parameters     459
_refine_ls_number_reflns         7606
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.054
_refine_ls_R_factor_all          0.0333
_refine_ls_R_factor_gt           0.0320
_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^)+(0.0634P)^2^+0.1859P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0851
_refine_ls_wR_factor_ref         0.0868
_reflns_number_gt                7368
_reflns_number_total             7606
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja804624u-file001.cif
_cod_data_source_block           leo213
_cod_database_code               4108255