Advances in the Synthesis of Homochiral (-)-1-Azafagomine and (+)-5-epi-1-Azafagomine. 1-N-Phenyl Carboxamide Derivatives of both Enantiomers of 1-Azafagomine: Leads for the Synthesis of Active α-Glycosidase Inhibitors.
M. José Alves; Flora T. Costa; Vera C. M. Duarte; Antonio Gil Fortes; José A. Martins; Nuno M. Micaelo; Journal of Organic Chemistry 76 (2011) 9584–9592; doi:10.1021/jo201486q

data_4026758
_publ_section_title
;
 Advances in the Synthesis of Homochiral (-)-1-Azafagomine and
 (+)-5-epi-1-Azafagomine. 1-N-Phenyl Carboxamide Derivatives of both
 Enantiomers of 1-Azafagomine: Leads for the Synthesis of Active
 \a-Glycosidase Inhibitors.
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              9584
_journal_page_last               9592
_journal_paper_doi               10.1021/jo201486q
_journal_volume                  76
_journal_year                    2011
_chemical_absolute_configuration rm
_chemical_compound_source        'synthesis as described'
_chemical_formula_moiety         'C13 H15 N3 O2'
_chemical_formula_sum            'C13 H15 N3 O2'
_chemical_formula_weight         245.28
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_date             2010-07-20T10:29:32-00:00
_audit_creation_method           'WinGX routine CIF_UPDATE'
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.4472(12)
_cell_length_b                   10.9829(14)
_cell_length_c                   11.0176(14)
_cell_measurement_reflns_used    6109
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      26.82
_cell_measurement_theta_min      2.61
_cell_measurement_wavelength     0.71073
_cell_volume                     1143.2(3)
_computing_cell_refinement       'APPEX2 (BRUKER AXS, 2005)'
_computing_data_collection       'APPEX2 (BRUKER AXS, 2005)'
_computing_data_reduction        'APPEX2 (BRUKER AXS, 2005)'
_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    'SIR-97  (Giacovazzo et all, 1999)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1
_diffrn_measured_fraction_theta_max 1
_diffrn_measurement_device       'four-circle diffractometer'
_diffrn_measurement_device_type  'BRUKER APPEX-II CCD'
_diffrn_measurement_method       'omega and phi scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_probe          x-ray
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.0327
_diffrn_reflns_av_unetI/netI     0.0178
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       0
_diffrn_reflns_number            13575
_diffrn_reflns_theta_full        26.82
_diffrn_reflns_theta_max         26.82
_diffrn_reflns_theta_min         2.62
_exptl_absorpt_coefficient_mu    0.099
_exptl_absorpt_correction_T_max  1
_exptl_absorpt_correction_T_min  0.8883
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'BRUKER SADABS'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.425
_exptl_crystal_description       prism
_exptl_crystal_F_000             520
_exptl_crystal_size_max          0.42
_exptl_crystal_size_mid          0.32
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.334
_refine_diff_density_min         -0.192
_refine_diff_density_rms         0.039
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.083
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     166
_refine_ls_number_reflns         1421
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.083
_refine_ls_R_factor_all          0.0348
_refine_ls_R_factor_gt           0.0328
_refine_ls_shift/su_max          0
_refine_ls_shift/su_mean         0
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0417P)^2^+0.4150P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0833
_refine_ls_wR_factor_ref         0.0846
_reflns_number_gt                1356
_reflns_number_total             1421
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            jo201486q_si_003.cif
_cod_data_source_block           um02hma
_cod_database_code               4026758