Schilancitrilactones A-C: three unique nortriterpenoids from Schisandra lancifolia.
Luo, Xiao; Shi, Yi-Ming; Luo, Rong-Hua; Luo, Shi-Hong; Li, Xiao-Nian; Wang, Rui-Rui; Li, Sheng-Hong; Zheng, Yong-Tang; Du, Xue; Xiao, Wei-Lie; Pu, Jian-Xin; Sun, Han-Dong; Organic Letters 14 (2012) 1286–1289; doi:10.1021/ol300099e

data_1507153
_publ_section_title
;
 Schilancitrilactones A-C: three unique nortriterpenoids from Schisandra
 lancifolia.
;
_journal_coden_ASTM              ORLEF7
_journal_issue                   5
_journal_name_full               'Organic Letters'
_journal_page_first              1286
_journal_page_last               1289
_journal_paper_doi               10.1021/ol300099e
_journal_volume                  14
_journal_year                    2012
_chemical_absolute_configuration rm
_chemical_formula_moiety         'C27 H34 O8'
_chemical_formula_sum            'C27 H34 O8'
_chemical_formula_weight         486.54
_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                 102.0530(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   10.40640(10)
_cell_length_b                   6.95520(10)
_cell_length_c                   18.3789(2)
_cell_measurement_reflns_used    7441
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      66.20
_cell_measurement_theta_min      4.34
_cell_volume                     1300.91(3)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_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      296(2)
_diffrn_measured_fraction_theta_full 0.949
_diffrn_measured_fraction_theta_max 0.949
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_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  0.0369
_diffrn_reflns_av_sigmaI/netI    0.0532
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            8415
_diffrn_reflns_theta_full        66.55
_diffrn_reflns_theta_max         66.55
_diffrn_reflns_theta_min         2.46
_exptl_absorpt_coefficient_mu    0.750
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.242
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       chunk
_exptl_crystal_F_000             520
_exptl_crystal_size_max          0.40
_exptl_crystal_size_mid          0.35
_exptl_crystal_size_min          0.18
_refine_diff_density_max         0.296
_refine_diff_density_min         -0.382
_refine_diff_density_rms         0.063
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.00(19)
_refine_ls_extinction_coef       0.0082(15)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     323
_refine_ls_number_reflns         3723
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0554
_refine_ls_R_factor_gt           0.0551
_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^)+(0.1407P)^2^+0.0362P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1617
_refine_ls_wR_factor_ref         0.1625
_reflns_number_gt                3680
_reflns_number_total             3723
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol300099e_si_003.cif
_cod_data_source_block           cu_slxy35_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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 

 Updated bibliographic information.

 Antanas Vaitkus,
 2019-09-22
;
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               1507153