Synthesis of the Cores of Hypocrellin and Shiraiachrome: Diastereoselective 1,8-Diketone Aldol Cyclization
Erin M. O'Brien; Jingxian Li; Patrick J. Carroll; Marisa C. Kozlowski; Journal of Organic Chemistry 75 (2010) 69–73; doi:10.1021/jo9018914

data_4025125
_publ_section_title
;
 Synthesis of the Cores of Hypocrellin and Shiraiachrome:
 Diastereoselective 1,8-Diketone Aldol Cyclization
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              69
_journal_page_last               73
_journal_paper_doi               10.1021/jo9018914
_journal_volume                  75
_journal_year                    2010
_chemical_formula_sum            'C29 H34 O9 S'
_chemical_formula_weight         558.62
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_Int_Tables_number      2
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_method           SHELXL-97
_cell_angle_alpha                106.311(2)
_cell_angle_beta                 109.262(2)
_cell_angle_gamma                94.8020(10)
_cell_formula_units_Z            2
_cell_length_a                   9.8442(11)
_cell_length_b                   10.9208(13)
_cell_length_c                   14.2899(18)
_cell_measurement_temperature    143(1)
_cell_volume                     1365.3(3)
_computing_data_collection       'CrystalClear (Rigaku, 1999)'
_computing_data_reduction        'CrystalClear (Rigaku, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR97 (Altomare, 1999)'
_diffrn_ambient_temperature      143(1)
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device       'CCD Area Detector'
_diffrn_measurement_device_type  'Rigaku Mercury'
_diffrn_measurement_method       'phi and omega rotations'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0192
_diffrn_reflns_av_sigmaI/netI    0.0246
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       16
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            12296
_diffrn_reflns_theta_full        25.01
_diffrn_reflns_theta_max         25.01
_diffrn_reflns_theta_min         2.68
_exptl_absorpt_coefficient_mu    0.173
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.9240
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;  Shape and scale corrections using equivalent reflections.
   Shape function based on spherical harmonics.
   Highest even and odd order for spherical harmonics:  4  and  3
   Laue group:  mmm
   Friedel opposites are equivalent.
;
_exptl_crystal_density_diffrn    1.359
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             592
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.30
_exptl_crystal_size_min          0.10
_refine_diff_density_max         1.864
_refine_diff_density_min         -0.835
_refine_diff_density_rms         0.083
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.043
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     363
_refine_ls_number_reflns         4760
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.043
_refine_ls_R_factor_all          0.0811
_refine_ls_R_factor_gt           0.0753
_refine_ls_shift/su_max          0.009
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1211P)^2^+2.3309P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2062
_refine_ls_wR_factor_ref         0.2127
_reflns_number_gt                4211
_reflns_number_total             4760
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo9018914_si_002.cif
_cod_data_source_block           shelxl
_cod_depositor_comments
;
The following automatic conversions were performed:

data name '_atom_site_symetry_multiplicity' was replaced with
'_atom_site_symmetry_multiplicity' as specified in the replacement
file 'data/replacement-values/replacement_tags.lst'.

Automatic conversion script
Id: cif_correct_tags 9268 2022-04-12 08:56:07Z antanas 
;
_cod_original_sg_symbol_H-M      'P -1 '
_cod_database_code               4025125