Highly Functionalized Tricyclic Oxazinanones via Pairwise Oxidative Dearomatization and N-Hydroxycarbamate Dehydrogenation: Molecular Diversity Inspired by Tetrodotoxin.
Good, Steffen N.; Sharpe, Robert J.; Johnson, Jeffrey S.; Journal of the American Chemical Society 139 (2017) 12422–12425; doi:10.1021/jacs.7b07745

data_4131643
_publ_section_title
;
 Highly Functionalized Tricyclic Oxazinanones via Pairwise Oxidative
 Dearomatization and N-Hydroxycarbamate Dehydrogenation: Molecular
 Diversity Inspired by Tetrodotoxin.
;
_journal_issue                   36
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              12422
_journal_page_last               12425
_journal_paper_doi               10.1021/jacs.7b07745
_journal_volume                  139
_journal_year                    2017
_chemical_formula_moiety         'C33 H35 N O7 Si'
_chemical_formula_sum            'C33 H35 N O7 Si'
_chemical_formula_weight         585.71
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     iterative
_audit_creation_date             2015-07-14
_audit_creation_method
;
Olex2 1.2
(compiled 2015.01.26 svn.r3150 for OlexSys, GUI svn.r4998)
;
_cell_angle_alpha                78.033(3)
_cell_angle_beta                 88.852(3)
_cell_angle_gamma                69.725(3)
_cell_formula_units_Z            2
_cell_length_a                   9.9577(6)
_cell_length_b                   9.9793(7)
_cell_length_c                   16.4948(10)
_cell_measurement_reflns_used    9614
_cell_measurement_temperature    100
_cell_measurement_theta_max      68.08
_cell_measurement_theta_min      4.74
_cell_volume                     1501.73(17)
_computing_cell_refinement       'SAINT v8.34A (Bruker, 2013)'
_computing_data_reduction        'SAINT v8.34A (Bruker, 2013)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'XL (Sheldrick, 2008)'
_computing_structure_solution    'olex2.solve (Bourhis et al., 2015)'
_diffrn_ambient_temperature      100
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.972
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0352
_diffrn_reflns_av_unetI/netI     0.0312
_diffrn_reflns_Laue_measured_fraction_full 0.973
_diffrn_reflns_Laue_measured_fraction_max 0.972
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            19832
_diffrn_reflns_point_group_measured_fraction_full 0.973
_diffrn_reflns_point_group_measured_fraction_max 0.972
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.192
_diffrn_reflns_theta_min         2.743
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    1.100
_exptl_absorpt_correction_T_max  0.9318
_exptl_absorpt_correction_T_min  0.8496
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details
;
SADABS-2014/5 (Bruker,2014/5) was used for absorption correction.
wR2(int) was 0.0598 before and 0.0469 after correction.
The Ratio of minimum to maximum transmission is 0.9118.
The \l/2 correction factor is 0.00150.
;
_exptl_crystal_colour            'clear colourless'
_exptl_crystal_colour_lustre     clear
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.295
_exptl_crystal_description       block
_exptl_crystal_F_000             620
_exptl_crystal_size_max          0.218
_exptl_crystal_size_mid          0.113
_exptl_crystal_size_min          0.113
_refine_diff_density_max         0.437
_refine_diff_density_min         -0.324
_refine_diff_density_rms         0.043
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     386
_refine_ls_number_reflns         5324
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0420
_refine_ls_R_factor_gt           0.0369
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0500P)^2^+0.6014P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0926
_refine_ls_wR_factor_ref         0.0961
_reflns_Friedel_coverage         0.000
_reflns_number_gt                4717
_reflns_number_total             5324
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b07745_si_006.cif
_cod_data_source_block           x1507004
_cod_database_code               4131643
_shelx_estimated_absorpt_t_max   0.886
_shelx_estimated_absorpt_t_min   0.795
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Secondary CH2 refined with riding coordinates:
 C15(H15A,H15B), C22(H22A,H22B), C25(H25A,H25B), C32(H32A,H32B)
2.b Aromatic/amide H refined with riding coordinates:
 C3(H3), C4(H4), C5(H5), C6(H6), C7(H7), C9(H9), C10(H10), C11(H11), C12(H12),
 C13(H13), C27(H27), C28(H28), C34(H34), C35(H35), C36(H36), C37(H37), C38(H38)
2.c Idealised Me refined as rotating group:
 C40(H40A,H40B,H40C), C41(H41A,H41B,H41C), C42(H42A,H42B,H42C)
;
_shelx_res_checksum              98035
_shelx_hkl_checksum              8481
_shelx_shelxl_version_number     2014/7
_olex2_submission_special_instructions 'No special instructions were received'