Synthesis of (±)-amathaspiramide F and discovery of an unusual stereocontrolling element for the [2,3]-Stevens rearrangement.
Soheili, Arash; Tambar, Uttam K.; Organic letters 15 (2013) 5138–5141; doi:10.1021/ol4025937

data_1556242
_publ_section_title
;
 Synthesis of (+-)-amathaspiramide F and discovery of an unusual
 stereocontrolling element for the [2,3]-Stevens rearrangement.
;
_journal_issue                   19
_journal_name_full               'Organic letters'
_journal_page_first              5138
_journal_page_last               5141
_journal_paper_doi               10.1021/ol4025937
_journal_volume                  15
_journal_year                    2013
_chemical_formula_moiety         'C17 H21 Br2 N O3'
_chemical_formula_sum            'C17 H21 Br2 N O3'
_chemical_formula_weight         447.17
_space_group_IT_number           14
_space_group_name_Hall           '-P 2ybc'
_space_group_name_H-M_alt        'P 1 21/c 1'
_symmetry_cell_setting           monoclinic
_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                 108.098(5)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.626(4)
_cell_length_b                   14.700(5)
_cell_length_c                   13.253(5)
_cell_measurement_reflns_used    5419
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.0
_cell_volume                     1782.5(12)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_molecular_graphics    'XP SHELXTL/PC, Siemens Analytical'
_computing_publication_material  'XP SHELXTL/PC, Siemens Analytical'
_computing_structure_refinement  'XL SHELXTL/PC, Siemens Analytical'
_computing_structure_solution
;

SIR97 - Altomare A., Burla M.C., Camalli M., Cascarano G.L., Giacovazzo C., 
Guagliardi A., Moliterni A.G.G., Polidori G.,Spagna R.
;
_diffrn_ambient_temperature      153(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device_type  'Rigaku SCX-Mini with Mercury 2 CCD'
_diffrn_measurement_method       \w-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  0.0737
_diffrn_reflns_av_sigmaI/netI    0.0382
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       19
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            28635
_diffrn_reflns_theta_full        27.49
_diffrn_reflns_theta_max         27.49
_diffrn_reflns_theta_min         2.62
_exptl_absorpt_coefficient_mu    4.561
_exptl_absorpt_correction_T_max  1.00
_exptl_absorpt_correction_T_min  0.550
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Abscor. T. Higashi (2001). The Rigaku Corporation, Tokyo, Japan.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.666
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plates
_exptl_crystal_F_000             896
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.36
_exptl_crystal_size_min          0.15
_refine_diff_density_max         1.605
_refine_diff_density_min         -1.214
_refine_diff_density_rms         0.096
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.063
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     211
_refine_ls_number_reflns         4083
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.063
_refine_ls_R_factor_all          0.0436
_refine_ls_R_factor_gt           0.0370
_refine_ls_shift/su_max          0.005
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0615P)^2^+0.3993P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1028
_refine_ls_wR_factor_ref         0.1073
_reflns_number_gt                3518
_reflns_number_total             4083
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol4025937_si_002.cif
_cod_data_source_block           as-5-91
_cod_depositor_comments
;
The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Monoclinic' was changed to
'monoclinic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
;
_cod_original_sg_symbol_H-M      P21/c
_cod_database_code               1556242