Synthesis and Unexpected Oxidization of the Tricyclic Core of Ugibohlin, Isophakellin, and Styloguanidine
Chia-Wei Chang; Chi-Cheng Wu; Yung-Yu Chang; Chia-Chi Lin; Tun-Cheng Chien; Journal of Organic Chemistry 78 (2013) 10459–10468; doi:10.1021/jo401911a

data_4028691
_publ_section_title
;
 Synthesis and Unexpected Oxidization of the Tricyclic Core of Ugibohlin,
 Isophakellin, and Styloguanidine
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              10459
_journal_page_last               10468
_journal_paper_doi               10.1021/jo401911a
_journal_volume                  78
_journal_year                    2013
_chemical_formula_moiety         'C15 H12 N2 O3'
_chemical_formula_sum            'C15 H12 N2 O3'
_chemical_formula_weight         268.27
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_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/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                 97.208(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   10.519(6)
_cell_length_b                   14.773(7)
_cell_length_c                   8.352(4)
_cell_measurement_reflns_used    0
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      0
_cell_measurement_theta_min      0
_cell_volume                     1287.6(11)
_computing_molecular_graphics    'Ortep-3 for Windows (Farrugia, 1997)'
_computing_publication_material  'WinGX publication routines (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-86 (Sheldrick, 1986)'
_diffrn_ambient_temperature      200(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  0.0920
_diffrn_reflns_av_sigmaI/netI    0.1083
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       17
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       9
_diffrn_reflns_limit_l_min       -9
_diffrn_reflns_number            8220
_diffrn_reflns_theta_full        25.02
_diffrn_reflns_theta_max         25.02
_diffrn_reflns_theta_min         2.39
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_T_max  0.9961
_exptl_absorpt_correction_T_min  0.9636
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.384
_exptl_crystal_description       prism
_exptl_crystal_F_000             560
_exptl_crystal_size_max          0.38
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.216
_refine_diff_density_min         -0.250
_refine_diff_density_rms         0.052
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.935
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     181
_refine_ls_number_reflns         2260
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.935
_refine_ls_R_factor_all          0.1482
_refine_ls_R_factor_gt           0.0599
_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^)+(0.0860P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1352
_refine_ls_wR_factor_ref         0.1716
_reflns_number_gt                1133
_reflns_number_total             2260
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo401911a_si_002.cif
_cod_data_source_block           a12147
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4028691