Stereoselective synthesis of oxa- and aza-angular triquinanes using tandem radical cyclization to vinylogous carbonates and carbamates.
Gharpure, Santosh J.; Niranjana, P.; Porwal, Suheel K.; Organic letters 14 (2012) 5476–5479; doi:10.1021/ol302557a

data_1508721
_publ_section_title
;
 Stereoselective synthesis of oxa- and aza-angular triquinanes using
 tandem radical cyclization to vinylogous carbonates and carbamates.
;
_journal_issue                   21
_journal_name_full               'Organic letters'
_journal_page_first              5476
_journal_page_last               5479
_journal_paper_doi               10.1021/ol302557a
_journal_volume                  14
_journal_year                    2012
_chemical_formula_moiety         'C30 H38 N2 O6 S2'
_chemical_formula_sum            'C30 H38 N2 O6 S2'
_chemical_formula_weight         586.74
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_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_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 101.595(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.2052(6)
_cell_length_b                   18.7686(9)
_cell_length_c                   16.2613(7)
_cell_measurement_reflns_used    6763
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      26.16
_cell_measurement_theta_min      2.31
_cell_volume                     3051.1(3)
_computing_cell_refinement       APEXII,Bruker,2004
_computing_data_collection       APEXII,Bruker,2004
_computing_data_reduction        SAINT,Bruker,2004
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 1997)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.941
_diffrn_measurement_device_type  'Bruker APEXII 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  0.0278
_diffrn_reflns_av_sigmaI/netI    0.0470
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            29123
_diffrn_reflns_theta_full        25.00
_diffrn_reflns_theta_max         32.82
_diffrn_reflns_theta_min         2.17
_exptl_absorpt_coefficient_mu    0.219
_exptl_absorpt_correction_T_max  0.9680
_exptl_absorpt_correction_T_min  0.9081
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Bruker,2004)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.277
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Rectangular
_exptl_crystal_F_000             1248
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.333
_refine_diff_density_min         -0.443
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.008
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     374
_refine_ls_number_reflns         10672
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.008
_refine_ls_R_factor_all          0.1252
_refine_ls_R_factor_gt           0.0561
_refine_ls_shift/su_max          0.006
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0715P)^2^+0.6150P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1350
_refine_ls_wR_factor_ref         0.1701
_reflns_number_gt                5465
_reflns_number_total             10672
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol302557a_si_003.cif
_cod_data_source_block           new
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to /home/saulius/struct/CIF-dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_Hall     '-P 2ybc '
_cod_original_sg_symbol_H-M      P2(1)/c
_cod_database_code               1508721