Stereochemical Assignment of C-24 and C-25 of Amarasterone A, a Putative Biosynthetic Intermediate of Cyasterone.
Hirayama, Yui; Okuzumi, Keiko; Masubuti, Hironori; Uekusa, Hidehiro; Girault, Jean-Pierre; Fujimoto, Yoshinori; The Journal of organic chemistry 79 (2014) 5471–5477; doi:10.1021/jo5005108

data_4029592
_publ_section_title
;
 Stereochemical Assignment of C-24 and C-25 of Amarasterone A,
 a&#x00A0;Putative Biosynthetic Intermediate of Cyasterone.
;
_journal_issue                   12
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              5471
_journal_page_last               5477
_journal_paper_doi               10.1021/jo5005108
_journal_volume                  79
_journal_year                    2014
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C30 H50 O3'
_chemical_formula_sum            'C30 H50 O3'
_chemical_formula_weight         458.70
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 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                 98.666(1)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   29.1632(11)
_cell_length_b                   6.6782(3)
_cell_length_c                   14.5294(6)
_cell_measurement_reflns_used    13259
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.41
_cell_measurement_theta_min      3.13
_cell_volume                     2797.4(2)
_computing_cell_refinement       'PROCESS-AUTO (Rigaku, 1998)'
_computing_data_collection       'PROCESS-AUTO (Rigaku, 1998)'
_computing_data_reduction        'PROCESS-AUTO (Rigaku, 1998)'
_computing_molecular_graphics    'ORTEP-3 (Farrugia, 2008)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Rigaku R-AXIS RAPID IP Area Detector System'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'rotating anode X-ray tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0194
_diffrn_reflns_av_sigmaI/netI    0.0169
_diffrn_reflns_limit_h_max       37
_diffrn_reflns_limit_h_min       -37
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            13745
_diffrn_reflns_theta_full        27.42
_diffrn_reflns_theta_max         27.42
_diffrn_reflns_theta_min         3.13
_exptl_absorpt_coefficient_mu    0.068
_exptl_absorpt_correction_T_max  0.9872
_exptl_absorpt_correction_T_min  0.8340
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Absorption was corrected by ABSCOR'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.089
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1016
_exptl_crystal_size_max          0.35
_exptl_crystal_size_mid          0.31
_exptl_crystal_size_min          0.19
_refine_diff_density_max         0.250
_refine_diff_density_min         -0.159
_refine_diff_density_rms         0.036
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   10(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.052
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     310
_refine_ls_number_reflns         3461
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.051
_refine_ls_R_factor_all          0.0388
_refine_ls_R_factor_gt           0.0360
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0671P)^2^+0.3214P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0950
_refine_ls_wR_factor_ref         0.0964
_reflns_number_gt                3213
_reflns_number_total             3461
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo5005108_si_002.cif
_cod_data_source_block           shelxl
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 2281 2013-09-26 08:29:07Z andrius 

 Adding full bibliography for 4029591--4029592.cif.
;
_cod_original_sg_symbol_H-M      C2
_cod_database_code               4029592