Seven-Membered Cyclic Sulfite Eudesmane Derivatives: Partial Synthesis, Structural Determination, and Enzymatic Resolution
Andrés García-Granados; Andrés Parra; Francisco Rivas; Alejandro J. Segovia; Journal of Organic Chemistry 72 (2007) 643–646; doi:10.1021/jo0620866

data_4022669
_publ_section_title
;
 Seven-Membered Cyclic Sulfite Eudesmane Derivatives: Partial
 Synthesis, Structural Determination, and Enzymatic Resolution
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              643
_journal_page_last               646
_journal_paper_doi               10.1021/jo0620866
_journal_volume                  72
_journal_year                    2007
_chemical_formula_sum            'C17 H28 O5 S'
_chemical_formula_weight         344.45
_chemical_name_systematic
;
3B-acetoxy-4A,5A,7A,11B-H-eudesman-6A,12-diyl-S(R)-cyclic-sulfite 
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 96.848(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.9324(7)
_cell_length_b                   10.3812(9)
_cell_length_c                   10.6069(9)
_cell_measurement_temperature    298(2)
_cell_volume                     867.22(13)
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      298(2)
_diffrn_measured_fraction_theta_full 0.919
_diffrn_measured_fraction_theta_max 0.919
_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  0.0214
_diffrn_reflns_av_sigmaI/netI    0.0365
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       13
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            5479
_diffrn_reflns_theta_full        28.13
_diffrn_reflns_theta_max         28.13
_diffrn_reflns_theta_min         1.93
_exptl_absorpt_coefficient_mu    0.209
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.319
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       'short prism'
_exptl_crystal_F_000             372
_refine_diff_density_max         0.359
_refine_diff_density_min         -0.218
_refine_diff_density_rms         0.050
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.07(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     212
_refine_ls_number_reflns         3487
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0392
_refine_ls_R_factor_gt           0.0375
_refine_ls_shift/su_max          0.010
_refine_ls_shift/su_mean         0.002
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0542P)^2^+0.1614P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0925
_refine_ls_wR_factor_ref         0.0943
_reflns_number_gt                3334
_reflns_number_total             3487
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo0620866si20061009_064757.cif
_cod_data_source_block
3B-acetoxy-4A,5A,7A,11B-H-eudesman-6A,12-diyl-S(R)-cyclic-sulfite
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               4022669