Enantiospecific Total Synthesis of the Hapalindoles, Fischerindoles, and Welwitindolinones via a Redox Economic Approach
Jeremy M. Richter; Yoshihiro Ishihara; Takeshi Masuda; Brandon W. Whitefield; Tomás Llamas; Antti Pohjakallio; Phil S. Baran; Journal of the American Chemical Society 130 (2008) 17938–17954; doi:10.1021/ja806981k

data_4108944
_publ_section_title
;
 Enantiospecific Total Synthesis of the Hapalindoles, Fischerindoles, and
 Welwitindolinones via a Redox Economic Approach
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              17938
_journal_page_last               17954
_journal_paper_doi               10.1021/ja806981k
_journal_volume                  130
_journal_year                    2008
_chemical_formula_sum            'C25 H35 Cl N2 O5'
_chemical_formula_weight         479.00
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   9.6690(19)
_cell_length_b                   13.587(3)
_cell_length_c                   19.429(4)
_cell_measurement_reflns_used    4349
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      38.09
_cell_measurement_theta_min      4.06
_cell_volume                     2552.4(9)
_computing_cell_refinement       'Bruker SAINT+'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT+'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'CCD area detector'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0666
_diffrn_reflns_av_sigmaI/netI    0.0618
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            20341
_diffrn_reflns_theta_full        25.99
_diffrn_reflns_theta_max         25.99
_diffrn_reflns_theta_min         1.83
_diffrn_standards_decay_%        1
_exptl_absorpt_coefficient_mu    0.186
_exptl_absorpt_correction_T_max  0.9690
_exptl_absorpt_correction_T_min  0.9428
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS (Sheldrick, 1999)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.246
_exptl_crystal_density_meas      0
_exptl_crystal_description       Parallelepiped
_exptl_crystal_F_000             1024
_exptl_crystal_size_max          0.32
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.423
_refine_diff_density_min         -0.407
_refine_diff_density_rms         0.055
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.08(12)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.018
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     275
_refine_ls_number_reflns         5012
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.1034
_refine_ls_R_factor_gt           0.0668
_refine_ls_shift/su_max          0.014
_refine_ls_shift/su_mean         0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.7000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1641
_refine_ls_wR_factor_ref         0.1870
_reflns_number_gt                3367
_reflns_number_total             5012
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja806981k_si_006.cif
_cod_data_source_block           jern
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'multiscan' changed to
'multi-scan' according to the built-in table from CIF Core dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_cell_volume        2552.5(9)
_cod_database_code               4108944