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_4033916
_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         'C24 H25 N O7 S'
_chemical_formula_sum            'C24 H25 N O7 S'
_chemical_formula_weight         471.53
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             13-01-04
_audit_creation_method           CRYSTALS_ver_14.11
_audit_update_record
;
2013-01-07- Report on C24 H25 N O7 S
            by Anthony C. Willis
            for  Ping Lan and Martin Banwell

2013-01-07 - passes checkcif tests

;
_cell_angle_alpha                90
_cell_angle_beta                 109.6363(12)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   9.9369(2)
_cell_length_b                   9.0908(2)
_cell_length_c                   13.3586(3)
_cell_measurement_reflns_used    15466
_cell_measurement_temperature    200
_cell_measurement_theta_max      27.5
_cell_measurement_theta_min      2.6
_cell_volume                     1136.56(4)
_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 0.995
_diffrn_measured_fraction_theta_max 0.995
_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  0.042
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            22658
_diffrn_reflns_theta_full        27.477
_diffrn_reflns_theta_max         27.477
_diffrn_reflns_theta_min         2.764
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.188
_exptl_absorpt_correction_T_max  0.978
_exptl_absorpt_correction_T_min  0.939
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
via Gaussian method (Coppens, 1970) implemented in maXus (2000)
;
_exptl_crystal_colour            'pale yellow'
_exptl_crystal_density_diffrn    1.378
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             496
_exptl_crystal_size_max          0.460
_exptl_crystal_size_mid          0.170
_exptl_crystal_size_min          0.160
_refine_diff_density_max         0.15
_refine_diff_density_min         -0.26
_refine_ls_abs_structure_details 'Flack (1983), 2178 Friedel-pairs'
_refine_ls_abs_structure_Flack   0.01(5)
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.9970
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     302
_refine_ls_number_reflns         4937
_refine_ls_number_restraints     3
_refine_ls_R_factor_all          0.0369
_refine_ls_R_factor_gt           0.0330
_refine_ls_shift/su_max          0.0043507
_refine_ls_shift/su_mean         0.0006660
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.05P)^2^ + 0.20P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0843
_refine_ls_wR_factor_gt          0.0819
_refine_ls_wR_factor_ref         0.0843
_reflns_limit_h_max              12
_reflns_limit_h_min              -12
_reflns_limit_k_max              10
_reflns_limit_k_min              -11
_reflns_limit_l_max              17
_reflns_limit_l_min              0
_reflns_number_gt                4572
_reflns_number_total             4938
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   2.86
_oxford_diffrn_Wilson_scale      0.83
_oxford_refine_ls_r_factor_ref   0.0369
_oxford_refine_ls_scale          1.139(4)
_oxford_reflns_number_all        4937
_oxford_reflns_threshold_expression_ref I>-10.0\s(I)
_oxford_structure_analysis_title '1041721 ban1254'
_cod_data_source_file            jo9b00018_si_013.cif
_cod_data_source_block           ban1254
_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/data/users/saulius/crontab/automatic-downloads/current/ACS/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      'P 1 21 1 '
_cod_database_code               4033916
_iucr_refine_instruction_details_constraints
;
BLOCK SCALE X'S, U'S H(191,X'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   ( 151,X'S) H   ( 152,X'S) 
RIDE C   (  18,X'S) H   ( 181,X'S) 
RIDE C   (  24,X'S) H   ( 241,X'S) 
RIDE C   (  25,X'S) H   ( 251,X'S) 
RIDE C   (  27,X'S) H   ( 271,X'S) 
RIDE C   (  28,X'S) H   ( 281,X'S) 
RIDE C   (  29,X'S) H   ( 291,X'S) H   ( 292,X'S) H   ( 293,X'S) 
RIDE C   (  33,X'S) H   ( 331,X'S) H   ( 332,X'S) H   ( 333,X'S) 
END                                                                             
;
_iucr_refine_instruction_details_restraints
;
DIST 0.82, .02 = O(19) TO H(191) 
ANGLE 109, 2 = C(3) TO O(19) TO H(191) 
NO 
REM   HREST   START (DO NOT REMOVE THIS LINE) 
REM   HREST   END (DO NOT REMOVE THIS LINE) 
END                                                                             
;