Double annulative cascade of tryptophan-containing peptides triggered by selectfluor.
Tréguier, Bret; Roche, Stéphane P; Organic letters 16 (2014) 278–281; doi:10.1021/ol403281t

data_1513521
_publ_section_title
;
 Double annulative cascade of tryptophan-containing peptides triggered by
 selectfluor.
;
_journal_issue                   1
_journal_name_full               'Organic letters'
_journal_page_first              278
_journal_page_last               281
_journal_paper_doi               10.1021/ol403281t
_journal_volume                  16
_journal_year                    2014
_chemical_formula_moiety         'C28 H20 F N3 O4'
_chemical_formula_sum            'C28 H20 F N3 O4'
_chemical_formula_weight         481.47
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 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                 104.751(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   26.2768(9)
_cell_length_b                   8.5963(3)
_cell_length_c                   20.8570(7)
_cell_measurement_reflns_used    9206
_cell_measurement_temperature    150(2)
_cell_measurement_theta_max      30.55
_cell_measurement_theta_min      2.62
_cell_volume                     4556.0(3)
_computing_cell_refinement       'APEX II v2010.11.3 (Bruker, 2012)'
_computing_data_collection       'APEX II v2010.11.3 (Bruker, 2012)'
_computing_data_reduction        'APEX II v2010.11.3 (Bruker, 2012)'
_computing_molecular_graphics    'SHELXTL (Bruker, 2012)'
_computing_publication_material  'SHELXTL (Bruker, 2012)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2010)'
_computing_structure_solution    'SIR-2004 (Burla et al., 2005)'
_diffrn_ambient_temperature      150(2)
_diffrn_detector                 'CCD area detector'
_diffrn_detector_area_resol_mean 83.33
_diffrn_detector_type            'Bruker APEXII'
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_details
'0.50 degree frames measured for 5 seconds each'
_diffrn_measurement_device       'APEX Kappa Duo'
_diffrn_measurement_device_type  Kappa
_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  0.0229
_diffrn_reflns_av_sigmaI/netI    0.0164
_diffrn_reflns_limit_h_max       37
_diffrn_reflns_limit_h_min       -37
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            35797
_diffrn_reflns_theta_full        30.55
_diffrn_reflns_theta_max         30.55
_diffrn_reflns_theta_min         1.60
_exptl_absorpt_coefficient_mu    0.101
_exptl_absorpt_correction_T_max  0.9752
_exptl_absorpt_correction_T_min  0.9607
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, R. Blessing; 1995'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.404
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2000
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.28
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.392
_refine_diff_density_min         -0.253
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.014
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     325
_refine_ls_number_reflns         6962
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.014
_refine_ls_R_factor_all          0.0469
_refine_ls_R_factor_gt           0.0401
_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^)+(0.0607P)^2^+2.8386P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1062
_refine_ls_wR_factor_ref         0.1124
_reflns_number_gt                6051
_reflns_number_total             6962
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol403281t_si_002.cif
_cod_data_source_block           12157
_cod_original_sg_symbol_H-M      C2/c
_cod_database_code               1513521