Total Synthesis of (\±)-Aplykurodinone-1: Traceless Stereochemical Guidance
Yandong Zhang; Samuel J. Danishefsky; Journal of the American Chemical Society 132 (2010) 9928–9928; doi:10.1021/ja105280j

data_4102687
_publ_section_title
;
 Total Synthesis of (\+-)-Aplykurodinone-1: Traceless Stereochemical
 Guidance
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              9928
_journal_page_last               9928
_journal_paper_doi               10.1021/ja105280j
_journal_volume                  132
_journal_year                    2010
_chemical_formula_sum            'C23 H40 O4 Si'
_chemical_formula_weight         408.64
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yn'
_symmetry_space_group_name_H-M   'P 1 21/n 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                 92.2650(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.9972(6)
_cell_length_b                   6.5178(4)
_cell_length_c                   35.853(2)
_cell_measurement_reflns_used    9051
_cell_measurement_temperature    125(2)
_cell_measurement_theta_max      30.32
_cell_measurement_theta_min      2.61
_cell_volume                     2334.3(2)
_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      125(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.0688
_diffrn_reflns_av_sigmaI/netI    0.0559
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       51
_diffrn_reflns_limit_l_min       -51
_diffrn_reflns_number            36334
_diffrn_reflns_theta_full        30.57
_diffrn_reflns_theta_max         30.57
_diffrn_reflns_theta_min         2.09
_exptl_absorpt_coefficient_mu    0.125
_exptl_absorpt_correction_T_max  0.9950
_exptl_absorpt_correction_T_min  0.9459
_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            COLORLESS
_exptl_crystal_density_diffrn    1.163
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       PLATE
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.355
_refine_diff_density_min         -0.229
_refine_diff_density_rms         0.054
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.000
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     260
_refine_ls_number_reflns         7137
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.000
_refine_ls_R_factor_all          0.0848
_refine_ls_R_factor_gt           0.0482
_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^)+(0.0541P)^2^+0.4165P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1057
_refine_ls_wR_factor_ref         0.1216
_reflns_number_gt                4827
_reflns_number_total             7137
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja105280j_si_002.cif
_cod_data_source_block           ysis10
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'EMPIRICAL' changed to
'empirical' according to the built-in table from CIF Core dictionary
named 'cif_core.dic' version 2.4.1 from
2010-06-29.

'_refine_ls_hydrogen_treatment' value 'CONSTR' changed
to 'constr' according to the built-in table from CIF Core 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_database_code               4102687