Concise and highly stereoselective synthesis of the C20-C26 building block of halichondrins and Eribulin
Shan, Mingde; Kishi, Yoshito; Organic Letters 14 (2012) 660–663; doi:10.1021/ol203373d

data_1516070
_publ_section_title
;
 Concise and highly stereoselective synthesis of the C20-C26 building
 block of halichondrins and Eribulin
;
_journal_coden_ASTM              ORLEF7
_journal_issue                   2
_journal_name_full               'Organic Letters'
_journal_page_first              660
_journal_page_last               663
_journal_paper_doi               10.1021/ol203373d
_journal_volume                  14
_journal_year                    2012
_chemical_absolute_configuration ad
_chemical_formula_sum            'C23 H23 I N2 O8'
_chemical_formula_weight         562.33
_space_group_IT_number           1
_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                90.9940(10)
_cell_angle_beta                 105.6680(10)
_cell_angle_gamma                103.3890(10)
_cell_formula_units_Z            2
_cell_length_a                   7.9894(2)
_cell_length_b                   11.0136(2)
_cell_length_c                   14.6649(3)
_cell_measurement_reflns_used    9927
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      28.7
_cell_measurement_theta_min      2.29
_cell_volume                     1204.27(5)
_computing_cell_refinement       'SAINT 7.46A (Bruker-AXS, 2009)'
_computing_data_collection       'APEX2 v2009.3.0 (Bruker-AXS, 2009)'
_computing_data_reduction        'SAINT 7.46A (Bruker-AXS, 2009)'
_computing_molecular_graphics    'Bruker SHELXTL (Sheldrick, 2008)'
_computing_publication_material  'Bruker SHELXTL (Sheldrick, 2008)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type
;
Bruker D8 goniometer with CCD area detector  
;
_diffrn_measurement_method       'omega and phi 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  0.0358
_diffrn_reflns_av_sigmaI/netI    0.0589
_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       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            26259
_diffrn_reflns_theta_full        28.76
_diffrn_reflns_theta_max         28.76
_diffrn_reflns_theta_min         1.45
_exptl_absorpt_coefficient_mu    1.380
_exptl_absorpt_correction_T_max  0.9863
_exptl_absorpt_correction_T_min  0.9729
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.606
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.02
_exptl_crystal_size_mid          0.01
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.873
_refine_diff_density_min         -0.540
_refine_diff_density_rms         0.077
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.024(9)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.062
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     615
_refine_ls_number_reflns         12338
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      1.062
_refine_ls_R_factor_all          0.0489
_refine_ls_R_factor_gt           0.0360
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0104P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0479
_refine_ls_wR_factor_ref         0.0505
_reflns_number_gt                10535
_reflns_number_total             12338
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             1503600
_cod_data_source_file            ol203373d_si_002.cif
_cod_data_source_block           mingdexray-11-28-11
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to
/usr/data/users/saulius/automatic-downloads/retrospective/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

 Updated bibliographic information.

 Antanas Vaitkus,
 2019-09-20

 Marked entry as a duplicate of entry 1503600.

 Antanas Vaitkus,
 2019-09-20
;
_cod_original_cell_volume        1204.27(4)
_cod_original_sg_symbol_Hall     P1
_cod_original_sg_symbol_H-M      P1
_cod_database_code               1516070