Biosynthetic Enantiodivergence in the Eburnane Alkaloids from Kopsia.
Chong, Kam-Weng; Yeap, Joanne Soon-Yee; Lim, Siew-Huah; Weber, Jean-Frédéric F; Low, Yun-Yee; Kam, Toh-Seok; Journal of natural products 80 (2017) 3014–3024; doi:10.1021/acs.jnatprod.7b00621

data_1547854
_publ_section_title
;
 Biosynthetic Enantiodivergence in the Eburnane Alkaloids from Kopsia.
;
_journal_issue                   11
_journal_name_full               'Journal of natural products'
_journal_page_first              3014
_journal_page_last               3024
_journal_paper_doi               10.1021/acs.jnatprod.7b00621
_journal_volume                  80
_journal_year                    2017
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C42 H52 N4 O3'
_chemical_formula_sum            'C42 H52 N4 O3'
_chemical_formula_weight         660.87
_chemical_melting_point          489.0(10)
_chemical_name_common            (-)-Leucophyllidine
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 108.984(4)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   12.7943(4)
_cell_length_b                   8.5404(2)
_cell_length_c                   17.2440(6)
_cell_measurement_reflns_used    5474
_cell_measurement_temperature    157(2)
_cell_measurement_theta_max      75.3330
_cell_measurement_theta_min      5.1750
_cell_volume                     1781.74(10)
_computing_cell_refinement       'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_data_collection       'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_data_reduction        'CrysAlisPro 1.171.38.43 (Rigaku OD, 2015)'
_computing_molecular_graphics    'X-SEED (Barbour, 2001)'
_computing_publication_material
'enCIFer (Allen, et. al., J. Applied Cryst., 37, 335-338, 2004)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      157(2)
_diffrn_detector_area_resol_mean 5.2020
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device_type  'SuperNova, Dual, Cu at zero, Atlas'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0446
_diffrn_reflns_av_unetI/netI     0.0653
_diffrn_reflns_Laue_measured_fraction_full 0.999
_diffrn_reflns_Laue_measured_fraction_max 0.978
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -15
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -10
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -21
_diffrn_reflns_number            12742
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.955
_diffrn_reflns_theta_full        67.684
_diffrn_reflns_theta_max         75.957
_diffrn_reflns_theta_min         3.653
_diffrn_source                   'micro-focus sealed X-ray tube'
_exptl_absorpt_coefficient_mu    0.608
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.07145
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro 1.171.38.42b (Rigaku Oxford Diffraction, 2015)
Empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.232
_exptl_crystal_description       needle
_exptl_crystal_F_000             712
_exptl_crystal_size_max          0.6
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.320
_refine_diff_density_min         -0.244
_refine_diff_density_rms         0.045
_refine_ls_abs_structure_details
;
 Flack x determined using 2337 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.1(2)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.017
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     447
_refine_ls_number_reflns         7101
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.017
_refine_ls_R_factor_all          0.0602
_refine_ls_R_factor_gt           0.0485
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         <0.001
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0628P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1151
_refine_ls_wR_factor_ref         0.1230
_reflns_Friedel_coverage         0.825
_reflns_Friedel_fraction_full    0.991
_reflns_Friedel_fraction_max     0.928
_reflns_number_gt                6101
_reflns_number_total             7101
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            np7b00621_si_003.cif
_cod_data_source_block           exp_6270
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '488-490 K' was changed to
'489.0(10)' - the average value was taken and precision was
estimated.

Automatic conversion script
Id: cif_fix_values 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 1547851--1547858.cif.
;
_cod_database_code               1547854
_shelx_shelxl_version_number     2014/7
_shelx_res_checksum              80559
_shelx_hkl_checksum              86909