Stereoselective construction of a key hydroindole precursor of epidithiodiketopiperazine (ETP) natural products
Minghao Feng; Xuefeng Jiang; Chem.Commun. 50 (2014) 9690–; doi:10.1039/C4cc04148H

data_7115491
_publ_section_title
;
 Stereoselective construction of a key hydroindole precursor of
 epidithiodiketopiperazine (ETP) natural products
;
_journal_name_full               Chem.Commun.
_journal_page_first              9690
_journal_paper_doi               10.1039/C4cc04148H
_journal_volume                  50
_journal_year                    2014
_chemical_formula_sum            'C20 H25 N O5'
_chemical_formula_weight         359.41
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 99.487(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.1672(5)
_cell_length_b                   7.7813(5)
_cell_length_c                   12.9980(8)
_cell_measurement_temperature    173(2)
_cell_volume                     914.50(10)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_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  0.0188
_diffrn_reflns_av_sigmaI/netI    0.0178
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -15
_diffrn_reflns_number            10650
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.53
_exptl_absorpt_coefficient_mu    0.094
_exptl_absorpt_correction_T_max  0.9671
_exptl_absorpt_correction_T_min  0.9495
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.305
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             384
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.42
_exptl_crystal_size_min          0.36
_refine_diff_density_max         0.135
_refine_diff_density_min         -0.120
_refine_diff_density_rms         0.026
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.3(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.051
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     239
_refine_ls_number_reflns         3023
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0256
_refine_ls_R_factor_gt           0.0247
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0358P)^2^+0.1377P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0648
_refine_ls_wR_factor_ref         0.0656
_reflns_number_gt                2955
_reflns_number_total             3023
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c4cc04148h2.cif
_cod_data_source_block           z2
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               7115491