First studies directed towards the diastereoselective synthesis of the BCD tricyclic core of brownin F.
Rodier, Fabien; Parrain, Jean-Luc; Chouraqui, Gaëlle; Commeiras, Laurent; Organic & biomolecular chemistry 11 (2013) 4178–4185; doi:10.1039/c3ob40363g

data_7152988
_publ_section_title
;
 First studies directed towards the diastereoselective synthesis of the
 BCD tricyclic core of brownin F.
;
_journal_issue                   25
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              4178
_journal_page_last               4185
_journal_paper_doi               10.1039/c3ob40363g
_journal_volume                  11
_journal_year                    2013
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C18 H22 O7'
_chemical_formula_sum            'C18 H22 O7'
_chemical_formula_weight         350.36
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_Int_Tables_number      14
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 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
_audit_creation_date             2012-10-25T11:12:12-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 106.134(1)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   13.6639(4)
_cell_length_b                   11.0259(2)
_cell_length_c                   11.8705(2)
_cell_measurement_reflns_used    16806
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      29.02
_cell_measurement_theta_min      1.55
_cell_measurement_wavelength     0.71073
_cell_volume                     1717.94(7)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.965
_diffrn_measured_fraction_theta_max 0.965
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       'Omega + Phi scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.083
_diffrn_reflns_av_unetI/netI     0.0488
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       0
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       0
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            16806
_diffrn_reflns_theta_full        29.02
_diffrn_reflns_theta_max         29.02
_diffrn_reflns_theta_min         1.55
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.104
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.355
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             744
_exptl_crystal_size_max          0.4
_exptl_crystal_size_mid          0.26
_exptl_crystal_size_min          0.06
_refine_diff_density_max         0.652
_refine_diff_density_min         -0.926
_refine_diff_density_rms         0.273
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.139
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     226
_refine_ls_number_reflns         4402
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.139
_refine_ls_R_factor_all          0.1234
_refine_ls_R_factor_gt           0.0645
_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^)+(0.1214P)^2^+0.2069P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.17
_refine_ls_wR_factor_ref         0.2227
_reflns_number_gt                2713
_reflns_number_total             4402
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c3ob40363g.txt
_cod_data_source_block           fr909c
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               7152988