Total synthesis of spiromastilactone A.
Chaumont-Olive, Pauline; Maddaluno, Jacques; Harrison-Marchand, Anne; Organic & biomolecular chemistry 17 (2019) 3819–3824; doi:10.1039/c9ob00547a

data_7156739
_publ_section_title
;
 Total synthesis of spiromastilactone A.
;
_journal_issue                   15
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              3819
_journal_page_last               3824
_journal_paper_doi               10.1039/c9ob00547a
_journal_volume                  17
_journal_year                    2019
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C26 H49 N O4 si2'
_chemical_formula_sum            'C26 H49 N O4 Si2'
_chemical_formula_weight         495.84
_space_group_IT_number           14
_space_group_name_Hall           '-P 2yab'
_space_group_name_H-M_alt        'P 1 21/a 1'
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2yab'
_symmetry_space_group_name_H-M   'P 1 21/a 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_conform_dict_location     ftp://ftp.iucr.org/pub/cif_core.dic
_audit_conform_dict_name         cif_core.dic
_audit_conform_dict_version      2.4.3
_audit_creation_date             2018-10-25T17:19:20-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_audit_update_record
;
2019-02-11 deposited with the CCDC.    2019-03-21 downloaded from the CCDC.
;
_cell_angle_alpha                90
_cell_angle_beta                 96.173(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   12.4339(19)
_cell_length_b                   19.941(3)
_cell_length_c                   12.7210(19)
_cell_measurement_reflns_used    2549
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.42
_cell_measurement_theta_min      1.91
_cell_measurement_wavelength     0.71073
_cell_volume                     3135.8(8)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXD (Sheldrick, 2002)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'SMART APEX I Bruker'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0912
_diffrn_reflns_av_unetI/netI     0.0938
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            24651
_diffrn_reflns_theta_full        26.42
_diffrn_reflns_theta_max         26.42
_diffrn_reflns_theta_min         1.91
_exptl_absorpt_coefficient_mu    0.14
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.05
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1088
_exptl_crystal_size_max          0
_exptl_crystal_size_mid          0
_exptl_crystal_size_min          0
_refine_diff_density_max         0.572
_refine_diff_density_min         -0.227
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     312
_refine_ls_number_reflns         6430
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.1895
_refine_ls_R_factor_gt           0.0786
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1887
_refine_ls_wR_factor_ref         0.2425
_reflns_number_gt                2549
_reflns_number_total             6430
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c9ob00547a2.cif
_cod_data_source_block           pc792a
_cod_depositor_comments
'Adding full bibliography for 7156738--7156739.cif.'
_cod_original_cell_volume        3135.7(8)
_cod_original_sg_symbol_H-M      'P 21/a'
_cod_database_code               7156739