Schinarisanlactone A, a new bisnortriterpenoid from Schisandra arisanensis.
Lin, Yu-Chi; Lo, I-Wen; Chen, Shun-Ying; Lin, Pi-Han; Chien, Ching-Te; Chang, Sui-yuan; Shen, Ya-Ching; Organic letters 13 (2011) 446–449; doi:10.1021/ol102772j

data_1501904
_publ_section_title
;
 Schinarisanlactone A, a new bisnortriterpenoid from Schisandra
 arisanensis.
;
_journal_issue                   3
_journal_name_full               'Organic letters'
_journal_page_first              446
_journal_page_last               449
_journal_paper_doi               10.1021/ol102772j
_journal_volume                  13
_journal_year                    2011
_chemical_absolute_configuration unk
_chemical_formula_sum            'C28 H38 O10'
_chemical_formula_weight         534.58
_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                   10.33660(10)
_cell_length_b                   10.93000(10)
_cell_length_c                   23.5701(3)
_cell_measurement_reflns_used    5734
_cell_measurement_temperature    295(2)
_cell_measurement_theta_max      77.4980
_cell_measurement_theta_min      3.7476
_cell_volume                     2662.93(5)
_computing_cell_refinement
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET) 
(compiled Jan  5 2010,16:28:46) 
Empirical absorption correction using spherical harmonics, 
 implemented in SCALE3 ABSPACK scaling algorithm. 
;
_computing_data_collection
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET) 
(compiled Jan  5 2010,16:28:46) 
Empirical absorption correction using spherical harmonics, 
 implemented in SCALE3 ABSPACK scaling algorithm. 
;
_computing_data_reduction
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET) 
(compiled Jan  5 2010,16:28:46) 
Empirical absorption correction using spherical harmonics, 
 implemented in SCALE3 ABSPACK scaling algorithm. 
;
_computing_molecular_graphics    SHELXTL
_computing_publication_material  SHELXTL
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Oxford Diffraction Gemini A'
_diffrn_measurement_method       CCD
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0248
_diffrn_reflns_av_sigmaI/netI    0.0296
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -28
_diffrn_reflns_number            9595
_diffrn_reflns_theta_full        68.00
_diffrn_reflns_theta_max         68.00
_diffrn_reflns_theta_min         3.75
_exptl_absorpt_coefficient_mu    0.838
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.85844
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
; 
CrysAlisPro, Oxford Diffraction Ltd., 
Version 1.171.33.55 (release 05-01-2010 CrysAlis171 .NET) 
(compiled Jan  5 2010,16:28:46) 
Empirical absorption correction using spherical harmonics, 
 implemented in SCALE3 ABSPACK scaling algorithm. 
;
_exptl_crystal_density_diffrn    1.333
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             1144
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.416
_refine_diff_density_min         -0.281
_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   0.0(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.131
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     343
_refine_ls_number_reflns         4848
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.131
_refine_ls_R_factor_all          0.0591
_refine_ls_R_factor_gt           0.0523
_refine_ls_shift/su_max          0.008
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.1000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1432
_refine_ls_wR_factor_ref         0.1484
_reflns_number_gt                4250
_reflns_number_total             4848
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol102772j_si_002.cif
_cod_data_source_block           ic14469
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               1501904