Extending Pummerer reaction chemistry: application to the assembly of the pentacyclic core of dibromopalau'amine.
Feldman, Ken S.; Nuriye, Ahmed Yimam; Organic letters 12 (2010) 4532–4535; doi:10.1021/ol1018322

data_1503217
_publ_section_title
;
 Extending Pummerer reaction chemistry: application to the assembly of the
 pentacyclic core of dibromopalau'amine.
;
_journal_issue                   20
_journal_name_full               'Organic letters'
_journal_page_first              4532
_journal_page_last               4535
_journal_paper_doi               10.1021/ol1018322
_journal_volume                  12
_journal_year                    2010
_chemical_formula_moiety         'C21 H18 Br2 N4 O S'
_chemical_formula_sum            'C21 H18 Br2 N4 O S'
_chemical_formula_weight         534.27
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                104.415(5)
_cell_angle_beta                 104.272(5)
_cell_angle_gamma                99.480(5)
_cell_formula_units_Z            2
_cell_length_a                   7.630(2)
_cell_length_b                   11.254(3)
_cell_length_c                   12.992(4)
_cell_measurement_reflns_used    3632
_cell_measurement_temperature    108(2)
_cell_measurement_theta_max      27.911
_cell_measurement_theta_min      2.835
_cell_volume                     1016.3(5)
_computing_cell_refinement       'Bruker SMART'
_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, 1990)'
_diffrn_ambient_temperature      108(2)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.973
_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  0.0140
_diffrn_reflns_av_sigmaI/netI    0.0336
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            8131
_diffrn_reflns_theta_full        28.29
_diffrn_reflns_theta_max         28.29
_diffrn_reflns_theta_min         1.70
_exptl_absorpt_coefficient_mu    4.112
_exptl_absorpt_correction_T_max  0.752
_exptl_absorpt_correction_T_min  0.679
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.746
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             532
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.07
_refine_diff_density_max         2.413
_refine_diff_density_min         -1.623
_refine_diff_density_rms         0.126
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    noref
_refine_ls_matrix_type           full
_refine_ls_number_parameters     262
_refine_ls_number_reflns         4905
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.041
_refine_ls_R_factor_all          0.0911
_refine_ls_R_factor_gt           0.0707
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0649P)^2^+5.7946P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1605
_refine_ls_wR_factor_ref         0.1720
_reflns_number_gt                3787
_reflns_number_total             4905
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol1018322_si_002.cif
_cod_data_source_block           auy5s
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
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 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               1503217