Enantioselective Synthesis of (-)-Sclerophytin A by a Stereoconvergent Epoxide Hydrolysis
Bin Wang; Armando P. Ramirez; Justin J. Slade; James P. Morken; Journal of the American Chemical Society 132 (2010) 16380–16382; doi:10.1021/ja108185z

data_4103565
_publ_section_title
;
 Enantioselective Synthesis of (-)-Sclerophytin A by a Stereoconvergent
 Epoxide Hydrolysis
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              16380
_journal_page_last               16382
_journal_paper_doi               10.1021/ja108185z
_journal_volume                  132
_journal_year                    2010
_chemical_formula_moiety         'C19 H28 O3'
_chemical_formula_sum            'C19 H28 O3'
_chemical_formula_weight         304.41
_chemical_melting_point          ?
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 104.046(7)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   11.642(6)
_cell_length_b                   7.337(4)
_cell_length_c                   20.650(10)
_cell_measurement_reflns_used    3742
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.35
_cell_measurement_theta_min      2.96
_cell_volume                     1711.1(15)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker SMART'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker SMART APEX CCD'
_diffrn_measurement_method       '0.3 deg wide \w exposures'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0794
_diffrn_reflns_av_sigmaI/netI    0.0679
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -14
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       26
_diffrn_reflns_limit_l_min       -26
_diffrn_reflns_number            18626
_diffrn_reflns_theta_full        27.00
_diffrn_reflns_theta_max         27.00
_diffrn_reflns_theta_min         2.37
_exptl_absorpt_coefficient_mu    0.078
_exptl_absorpt_correction_T_max  0.9984
_exptl_absorpt_correction_T_min  0.9861
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   SADABS
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.182
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    none
_exptl_crystal_description       needle
_exptl_crystal_F_000             664
_exptl_crystal_size_max          0.18
_exptl_crystal_size_mid          0.03
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.259
_refine_diff_density_min         -0.200
_refine_diff_density_rms         0.043
_refine_ls_extinction_coef       na
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.042
_refine_ls_hydrogen_treatment    refxyz
_refine_ls_matrix_type           full
_refine_ls_number_parameters     283
_refine_ls_number_reflns         3743
_refine_ls_number_restraints     28
_refine_ls_restrained_S_all      1.039
_refine_ls_R_factor_all          0.1139
_refine_ls_R_factor_gt           0.0634
_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^)+(0.0368P)^2^+0.6254P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1085
_refine_ls_wR_factor_ref         0.1245
_reflns_number_gt                2342
_reflns_number_total             3743
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja108185z_si_004.cif
_cod_data_source_block           C19H28O3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        1711.1(14)
_cod_original_sg_symbol_H-M      'P 21/c'
_cod_database_code               4103565