Application of Electrocyclic Ring-Opening and Desymmetrizing Nucleophilic Trappings of meso-6,6-Dibromobicyclo[3.1.0]hexanes to Total Syntheses of Crinine and Haemanthamine Alkaloids.
Lan, Ping; Banwell, Martin G.; Willis, Anthony C.; The Journal of organic chemistry 84 (2019) 3431–3466; doi:10.1021/acs.joc.9b00018

data_4033915
_publ_section_title
;
 Application of Electrocyclic Ring-Opening and Desymmetrizing Nucleophilic
 Trappings of meso-6,6-Dibromobicyclo[3.1.0]hexanes to Total Syntheses of
 Crinine and Haemanthamine Alkaloids.
;
_journal_issue                   6
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              3431
_journal_page_last               3466
_journal_paper_doi               10.1021/acs.joc.9b00018
_journal_volume                  84
_journal_year                    2019
_chemical_absolute_configuration ad
_chemical_compound_source        local
_chemical_formula_moiety         'C26 H27 N O8 S'
_chemical_formula_sum            'C26 H27 N O8 S'
_chemical_formula_weight         513.57
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_audit_creation_date             13-03-13
_audit_creation_method           CRYSTALS_ver_14.40
_audit_update_record
;
2013-03-14 - Report on C26 H27 N O8 S
            by Anthony C. Willis
            for  Ping Lan and Martin Banwell

2013-03-14 - passes checkcif tests

;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   10.4700(1)
_cell_length_b                   20.6793(3)
_cell_length_c                   22.5086(4)
_cell_measurement_reflns_used    41573
_cell_measurement_temperature    200
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.6
_cell_volume                     4873.39(12)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 2001).'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics
; 
ORTEP-II (Johnson 1976) in teXsan (MSC, 1992-1997)
;
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      200
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       ' \f and \w scans with CCD '
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.067
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       26
_diffrn_reflns_limit_k_min       -26
_diffrn_reflns_limit_l_max       29
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            57665
_diffrn_reflns_theta_full        27.479
_diffrn_reflns_theta_max         27.479
_diffrn_reflns_theta_min         2.657
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.185
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.86
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.400
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             2160
_exptl_crystal_size_max          0.460
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.060
_refine_diff_density_max         0.42
_refine_diff_density_min         -0.39
_refine_ls_abs_structure_details 'Flack (1983), 4994 Friedel-pairs'
_refine_ls_abs_structure_Flack   -0.06(5)
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.9746
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     650
_refine_ls_number_reflns         11157
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0630
_refine_ls_R_factor_gt           0.0417
_refine_ls_shift/su_max          0.0012535
_refine_ls_shift/su_mean         0.0001669
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.04P)^2^ + 0.92P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0905
_refine_ls_wR_factor_gt          0.0822
_refine_ls_wR_factor_ref         0.0905
_reflns_limit_h_max              13
_reflns_limit_h_min              -13
_reflns_limit_k_max              26
_reflns_limit_k_min              0
_reflns_limit_l_max              29
_reflns_limit_l_min              0
_reflns_number_gt                8674
_reflns_number_total             11158
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   2.83
_oxford_diffrn_Wilson_scale      15.89
_oxford_refine_ls_r_factor_ref   0.0630
_oxford_refine_ls_scale          0.25931(12)
_oxford_reflns_number_all        11157
_oxford_reflns_threshold_expression_ref I>-10.0\s(I)
_oxford_structure_analysis_title 'slow At 12: 2 on 13/ 3'
_cod_data_source_file            jo9b00018_si_014.cif
_cod_data_source_block           ban1310
_cod_original_sg_symbol_H-M      'P 21 21 21 '
_cod_database_code               4033915
_iucr_refine_instruction_details_constraints
;
BLOCK SCALE X'S, U'S 
CONT ENANTIO 
RIDE C   (   1,X'S) H   (  11,X'S) 
RIDE C   (   2,X'S) H   (  21,X'S) 
RIDE C   (   3,X'S) H   (  31,X'S) 
RIDE C   (   4,X'S) H   (  41,X'S) H   (  42,X'S) 
RIDE C   (   5,X'S) H   (  51,X'S) 
RIDE C   (   8,X'S) H   (  81,X'S) H   (  82,X'S) 
RIDE C   (   9,X'S) H   (  91,X'S) 
RIDE C   (  11,X'S) H   ( 111,X'S) 
RIDE C   (  12,X'S) H   ( 121,X'S) 
RIDE C   (  15,X'S) H   ( 152,X'S) H   ( 151,X'S) 
RIDE C   (  18,X'S) H   ( 181,X'S) 
RIDE C   (  22,X'S) H   ( 223,X'S) H   ( 222,X'S) H   ( 221,X'S) 
RIDE C   (  27,X'S) H   ( 271,X'S) 
RIDE C   (  28,X'S) H   ( 281,X'S) 
RIDE C   (  30,X'S) H   ( 301,X'S) 
RIDE C   (  31,X'S) H   ( 311,X'S) 
RIDE C   (  32,X'S) H   ( 322,X'S) H   ( 321,X'S) H   ( 323,X'S) 
RIDE C   (  36,X'S) H   ( 362,X'S) H   ( 361,X'S) H   ( 363,X'S) 
RIDE C   (  51,X'S) H   ( 511,X'S) 
RIDE C   (  52,X'S) H   ( 521,X'S) 
RIDE C   (  53,X'S) H   ( 531,X'S) 
RIDE C   (  54,X'S) H   ( 541,X'S) H   ( 542,X'S) 
RIDE C   (  55,X'S) H   ( 551,X'S) 
RIDE C   (  58,X'S) H   ( 581,X'S) H   ( 582,X'S) 
RIDE C   (  59,X'S) H   ( 591,X'S) 
RIDE C   (  61,X'S) H   ( 611,X'S) 
RIDE C   (  62,X'S) H   ( 621,X'S) 
RIDE C   (  65,X'S) H   ( 652,X'S) H   ( 651,X'S) 
RIDE C   (  68,X'S) H   ( 681,X'S) 
RIDE C   (  72,X'S) H   ( 723,X'S) H   ( 722,X'S) H   ( 721,X'S) 
RIDE C   (  77,X'S) H   ( 771,X'S) 
RIDE C   (  78,X'S) H   ( 781,X'S) 
RIDE C   (  80,X'S) H   ( 801,X'S) 
RIDE C   (  81,X'S) H   ( 811,X'S) 
RIDE C   (  82,X'S) H   ( 822,X'S) H   ( 821,X'S) H   ( 823,X'S) 
RIDE C   (  86,X'S) H   ( 862,X'S) H   ( 861,X'S) H   ( 863,X'S) 
END                                                                             
;
_iucr_refine_instruction_details_restraints
;
NO 
REM   HREST   START (DO NOT REMOVE THIS LINE) 
REM   HREST   END (DO NOT REMOVE THIS LINE) 
END                                                                             
;