Organocatalyzed enantioselective [3+3] annulation for the direct synthesis of conformationally constrained cyclic tryptophan derivatives
Wu, Lulu; Zheng, Yin; Wang, Youming; ZHOU, Zhenghong; RSC Adv.  (2016) –; doi:10.1039/C5RA24288F

data_7223937
_publ_section_title
;
 Organocatalyzed enantioselective [3+3] annulation for the direct
 synthesis of conformationally constrained cyclic tryptophan derivatives
;
_journal_name_full               'RSC Adv.'
_journal_paper_doi               10.1039/C5RA24288F
_journal_year                    2016
_chemical_formula_sum            'C25 H20 N2 O2 S'
_chemical_formula_weight         412.49
_space_group_IT_number           9
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C -2yc'
_symmetry_space_group_name_H-M   'C 1 c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_block_doi                 10.5517/cc1k2y1m
_audit_creation_method           SHELXL-97
_audit_update_record
;
2015-10-23 deposited with the CCDC.
2016-01-15 downloaded from the CCDC.
;
_cell_angle_alpha                90.00
_cell_angle_beta                 108.18(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   19.897(4)
_cell_length_b                   12.667(3)
_cell_length_c                   8.4207(17)
_cell_measurement_reflns_used    3179
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      27.8944
_cell_measurement_theta_min      1.9354
_cell_volume                     2016.4(8)
_computing_cell_refinement       crystalclear
_computing_data_collection       crystalclear
_computing_data_reduction        crystalclear
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_measured_fraction_theta_full 0.995
_diffrn_measured_fraction_theta_max 0.995
_diffrn_measurement_device_type  'rigaku saturn'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0392
_diffrn_reflns_av_sigmaI/netI    0.0570
_diffrn_reflns_limit_h_max       25
_diffrn_reflns_limit_h_min       -26
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -10
_diffrn_reflns_number            9734
_diffrn_reflns_theta_full        27.89
_diffrn_reflns_theta_max         27.89
_diffrn_reflns_theta_min         1.94
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.186
_exptl_absorpt_correction_T_max  0.9781
_exptl_absorpt_correction_T_min  0.9638
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   crystalclear
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.359
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             864
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.246
_refine_diff_density_min         -0.186
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.03(5)
_refine_ls_extinction_coef       0.0133(7)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.971
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     277
_refine_ls_number_reflns         4166
_refine_ls_number_restraints     3
_refine_ls_restrained_S_all      0.970
_refine_ls_R_factor_all          0.0405
_refine_ls_R_factor_gt           0.0317
_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^)+(0.0398P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0692
_refine_ls_wR_factor_ref         0.0722
_reflns_number_gt                3359
_reflns_number_total             4166
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            c5ra24288f2.cif
_cod_data_source_block           shelxl
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

'_exptl_absorpt_correction_type' value 'MULTI-SCAN' changed to
'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/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 4268 2015-11-12 08:31:59Z antanas 
;
_cod_original_cell_volume        2016.3(7)
_cod_original_sg_symbol_H-M      Cc
_cod_database_code               7223937