Studies Directed toward the Stereochemical Structure Determination of the Naturally Occurring Glucosidase Inhibitor, Kotalanol: Synthesis and Inhibitory Activities against Human Maltase Glucoamylase of Seven-Carbon, Chain-Extended Homologues of Salacinol
Ravindranath Nasi; Brian O. Patrick; Lyann Sim; David R. Rose; B. Mario Pinto; Journal of Organic Chemistry 73 (2008) 6172–6181; doi:10.1021/jo800855n

data_4023604
_publ_section_title
;
 Studies Directed toward the Stereochemical Structure Determination of
 the Naturally Occurring Glucosidase Inhibitor, Kotalanol: Synthesis
 and Inhibitory Activities against Human Maltase Glucoamylase of
 Seven-Carbon, Chain-Extended Homologues of Salacinol
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              6172
_journal_page_last               6181
_journal_paper_doi               10.1021/jo800855n
_journal_volume                  73
_journal_year                    2008
_chemical_formula_sum            'C41 H48 O9'
_chemical_formula_weight         684.79
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_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_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   13.3050(13)
_cell_length_b                   14.0637(10)
_cell_length_c                   19.9902(18)
_cell_measurement_reflns_used    4964
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      21.15
_cell_measurement_theta_min      2.34
_cell_volume                     3740.5(6)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker X8 APEX II'
_diffrn_measurement_method       'area detector'
_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  0.0475
_diffrn_reflns_av_sigmaI/netI    0.0526
_diffrn_reflns_limit_h_max       15
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            27968
_diffrn_reflns_theta_full        25.07
_diffrn_reflns_theta_max         25.07
_diffrn_reflns_theta_min         1.77
_exptl_absorpt_coefficient_mu    0.085
_exptl_absorpt_correction_T_max  0.985
_exptl_absorpt_correction_T_min  0.846
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.216
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1464
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.114
_refine_diff_density_min         -0.153
_refine_diff_density_rms         0.031
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.7(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.997
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     455
_refine_ls_number_reflns         6596
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.997
_refine_ls_R_factor_all          0.0890
_refine_ls_R_factor_gt           0.0425
_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^)+(0.0423P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0804
_refine_ls_wR_factor_ref         0.0963
_reflns_number_gt                4134
_reflns_number_total             6596
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo800855n-file004.cif
_cod_data_source_block           Compound_27
_cod_database_code               4023604