Total Syntheses of (\±)-Platencin and (-)-Platencin
K. C. Nicolaou; G. Scott Tria; David J. Edmonds; Moumita Kar; Journal of the American Chemical Society 131 (2009) 15909–15917; doi:10.1021/ja906801g

data_4105266
_publ_section_title
;
 Total Syntheses of (\+-)-Platencin and (-)-Platencin
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              15909
_journal_page_last               15917
_journal_paper_doi               10.1021/ja906801g
_journal_volume                  131
_journal_year                    2009
_chemical_formula_sum            'C13 H20 O2'
_chemical_formula_weight         208.29
_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                   6.0634(12)
_cell_length_b                   11.813(2)
_cell_length_c                   16.238(3)
_cell_measurement_reflns_used    4393
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      27.69
_cell_measurement_theta_min      2.51
_cell_volume                     1163.1(4)
_computing_cell_refinement       'Bruker SAINT+'
_computing_data_collection       'Bruker SMART'
_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, 1997)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  '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  0.0223
_diffrn_reflns_av_sigmaI/netI    0.0208
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            8444
_diffrn_reflns_theta_full        24.99
_diffrn_reflns_theta_max         24.99
_diffrn_reflns_theta_min         2.13
_diffrn_standards_decay_%        1
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_T_max  0.9846
_exptl_absorpt_correction_T_min  0.9755
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1999)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.190
_exptl_crystal_density_meas      0
_exptl_crystal_description       Parallalepiped
_exptl_crystal_F_000             456
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.23
_exptl_crystal_size_min          0.20
_refine_diff_density_max         0.256
_refine_diff_density_min         -0.127
_refine_diff_density_rms         0.031
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1.4(16)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     138
_refine_ls_number_reflns         2043
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.069
_refine_ls_R_factor_all          0.0465
_refine_ls_R_factor_gt           0.0414
_refine_ls_shift/su_max          0.062
_refine_ls_shift/su_mean         0.007
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0700P)^2^+0.1200P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1136
_refine_ls_wR_factor_ref         0.1178
_reflns_number_gt                1839
_reflns_number_total             2043
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja906801g_si_003.cif
_cod_data_source_block           dedm
_cod_database_code               4105266