Total Synthesis of the Norhasubanan Alkaloid Stephadiamine.
Hartrampf, Nina; Winter, Nils; Pupo, Gabriele; Stoltz, Brian M.; Trauner, Dirk; Journal of the American Chemical Society 140 (2018) 8675–8680; doi:10.1021/jacs.8b01918

data_4132161
_publ_section_title
;
 Total Synthesis of the Norhasubanan Alkaloid Stephadiamine.
;
_journal_issue                   28
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              8675
_journal_page_last               8680
_journal_paper_doi               10.1021/jacs.8b01918
_journal_volume                  140
_journal_year                    2018
_chemical_formula_moiety         'C12 H14 O3'
_chemical_formula_sum            'C12 H14 O3'
_chemical_formula_weight         206.23
_chemical_name_common            494a
_space_group_crystal_system      monoclinic
_space_group_IT_number           9
_space_group_name_Hall           'C -2yc'
_space_group_name_H-M_alt        'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_audit_block_code                C12H14O3_tv368_trauner
_audit_creation_method           SHELXL-2014
_audit_update_record             02-Oct-15
_cell_angle_alpha                90
_cell_angle_beta                 97.8156(18)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   4.2298(2)
_cell_length_b                   19.7579(11)
_cell_length_c                   12.2515(6)
_cell_measurement_reflns_used    3406
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.3570
_cell_measurement_theta_min      3.9406
_cell_volume                     1014.37(9)
_computing_cell_refinement       'APEX2 v2012.4-3 (Bruker AXS)'
_computing_data_collection       'Bruker Instrument Service v3.0.21'
_computing_data_reduction        'SAINT V8.18C (Bruker AXS Inc., 2011)'
_computing_structure_refinement
;
Sheldrick, G. M. (2008).
<i>Acta Cryst.</i> A<b>64</b>, 112--122.
;
_computing_structure_solution
;
A. Altomare, M. C. Burla, M. Camalli, G. L. Cascarano, C. Giacovazzo, A.
Guagliardi, A. G. G. Moliterni, G. Polidori, R. Spagna: SIR97: a new tool for
crystal structure determination and refinement; J. Appl. Crystallogr. 1999,
32, 115-119.
;
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10.4167
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       'fixed-chi three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8Venture'
_diffrn_measurement_method       'mix of phi and omega scans'
_diffrn_radiation_collimation    'focusing mirrors'
_diffrn_radiation_monochromator  'focusing mirrors'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0331
_diffrn_reflns_av_unetI/netI     0.0308
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.993
_diffrn_reflns_limit_h_max       4
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       24
_diffrn_reflns_limit_k_min       -24
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            6169
_diffrn_reflns_point_group_measured_fraction_full 0.994
_diffrn_reflns_point_group_measured_fraction_max 0.994
_diffrn_reflns_theta_full        26.355
_diffrn_reflns_theta_max         26.38
_diffrn_reflns_theta_min         3.940
_diffrn_source                   'rotating anode (TXS)'
_diffrn_source_current           50
_diffrn_source_power             2.5
_diffrn_source_type              'Bruker TXS'
_diffrn_source_voltage           50
_exptl_absorpt_coefficient_mu    0.096
_exptl_absorpt_correction_T_max  0.9585
_exptl_absorpt_correction_T_min  0.8529
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS V2014/4 (Bruker AXS Inc.)'
_exptl_crystal_colour            orange
_exptl_crystal_density_diffrn    1.350
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       rod
_exptl_crystal_F_000             440
_exptl_crystal_size_max          0.100
_exptl_crystal_size_mid          0.040
_exptl_crystal_size_min          0.030
_refine_diff_density_max         0.164
_refine_diff_density_min         -0.206
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details
;
 Refined as an inversion twin.
;
_refine_ls_abs_structure_Flack   0.1(15)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     139
_refine_ls_number_reflns         1775
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.0389
_refine_ls_R_factor_gt           0.0332
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0465P)^2^+0.2317P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0775
_refine_ls_wR_factor_ref         0.0802
_reflns_Friedel_coverage         0.989
_reflns_Friedel_fraction_full    0.994
_reflns_Friedel_fraction_max     0.994
_reflns_number_gt                1631
_reflns_number_total             1775
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja8b01918_si_002.cif
_cod_data_source_block           tv368
_cod_original_sg_symbol_H-M      'C c'
_cod_database_code               4132161
_shelxl_version_number           2014-3
_shelx_res_checksum              80934
_shelx_hkl_checksum              43451