Biomimetic total syntheses of spirobacillenes A and B
Hongzhi Yang; Juan Feng; Yefeng Tang; Chem.Commun. 49 (2013) 6442–; doi:10.1039/c3cc42686f

data_7109476
_publ_section_title
;
 Biomimetic total syntheses of spirobacillenes A and B
;
_journal_name_full               Chem.Commun.
_journal_page_first              6442
_journal_paper_doi               10.1039/c3cc42686f
_journal_volume                  49
_journal_year                    2013
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C24 H27 N O3 Si'
_chemical_formula_sum            'C24 H27 N O3 Si'
_chemical_formula_weight         405.56
_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            8
_cell_length_a                   11.284(3)
_cell_length_b                   14.658(3)
_cell_length_c                   27.222(7)
_cell_measurement_reflns_used    15048
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.48
_cell_measurement_theta_min      1.39
_cell_volume                     4502.5(19)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2007)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2007)'
_computing_molecular_graphics    'Olex2 ver 1.1'
_computing_publication_material  'SHELX97 (Sheldrick, 2008)'
_computing_structure_refinement  'Olex2 ver 1.1'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Saturn724+ CCD'
_diffrn_measurement_method       '\w scans at fixed \c = 45\%'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0670
_diffrn_reflns_av_sigmaI/netI    0.0346
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -18
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            44582
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         1.95
_exptl_absorpt_coefficient_mu    0.128
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.6035
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2007)'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.197
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             1728
_exptl_crystal_size_max          0.48
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.284
_refine_diff_density_min         -0.278
_refine_diff_density_rms         0.059
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -10(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.274
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     535
_refine_ls_number_reflns         5686
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.274
_refine_ls_R_factor_all          0.0594
_refine_ls_R_factor_gt           0.0575
_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^)+(0.0385P)^2^+2.0383P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1275
_refine_ls_wR_factor_ref         0.1284
_reflns_number_gt                5586
_reflns_number_total             5686
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c3cc42686f.txt
_cod_data_source_block           sa2478
_cod_original_cell_volume        4502.4(18)
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7109476