Andransinine: an unusual case of spontaneous resolution in an indole alkaloid derivative.
Low, Yun-Yee; Gan, Chew-Yan; Kam, Toh-Seok; Journal of natural products 77 (2014) 1532–1535; doi:10.1021/np500289t

data_1516116
_publ_section_title
;
 Andransinine: an unusual case of spontaneous resolution in an indole
 alkaloid derivative.
;
_journal_issue                   6
_journal_name_full               'Journal of natural products'
_journal_page_first              1532
_journal_page_last               1535
_journal_paper_doi               10.1021/np500289t
_journal_volume                  77
_journal_year                    2014
_chemical_formula_moiety         'C H4 O, C23 H28 N2 O3'
_chemical_formula_sum            'C24 H32 N2 O4'
_chemical_formula_weight         412.51
_chemical_melting_point          205.0(10)
_chemical_name_common            (+-)-andransinine
_space_group_crystal_system      orthorhombic
_space_group_IT_number           33
_space_group_name_Hall           'P 2c -2n'
_space_group_name_H-M_alt        'P n a 21'
_symmetry_space_group_name_Hall  'P 2c -2n'
_symmetry_space_group_name_H-M   'P n a 21'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.6828(2)
_cell_length_b                   21.4082(4)
_cell_length_c                   11.2277(2)
_cell_measurement_reflns_used    8284
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.471
_cell_measurement_theta_min      2.531
_cell_volume                     2087.04(7)
_computing_cell_refinement       'SAINT (Bruker, 2007)'
_computing_data_collection       'APEX2 (Bruker, 2007)'
_computing_data_reduction        'SAINT v7.68A (Bruker, 2009)'
_computing_molecular_graphics    'X-SEED (Barbour, 2001)'
_computing_publication_material
;  
SHELXL-97 (Sheldrick, 2008), enCIFer (Allen et al., 2004),
;
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0263
_diffrn_reflns_av_unetI/netI     0.0239
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 1.000
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       27
_diffrn_reflns_limit_k_min       -27
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            18902
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.999
_diffrn_reflns_theta_full        25.005
_diffrn_reflns_theta_max         27.500
_diffrn_reflns_theta_min         1.903
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.8622
_exptl_absorpt_correction_T_min  0.8076
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2008/1 (Bruker,2008) was used for absorption correction.
R(int) was 0.0761 before and 0.0454 after correction.
The Ratio of minimum to maximum transmission is 0.9367.
The \l/2 correction factor is 0.0015.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.313
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             888
_exptl_crystal_size_max          0.840
_exptl_crystal_size_mid          0.360
_exptl_crystal_size_min          0.240
_refine_diff_density_max         0.490
_refine_diff_density_min         -0.340
_refine_diff_density_rms         0.046
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     275
_refine_ls_number_reflns         4796
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0372
_refine_ls_R_factor_gt           0.0352
_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^)+(0.0577P)^2^+0.4695P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0908
_refine_ls_wR_factor_ref         0.0923
_reflns_Friedel_coverage         0.901
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.998
_reflns_number_gt                4579
_reflns_number_total             4796
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            np500289t_si_004.cif
_cod_data_source_block           (plus,minus)-andransinine_racemic_MeOH
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value '204-206' was changed to '205.0(10)'
- the average value was taken and precision was estimated.

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

 Adding full bibliography for 1516115--1516119.cif.
;
_cod_database_code               1516116
_shelx_estimated_absorpt_t_min   0.929
_shelx_estimated_absorpt_t_max   0.979
_shelxl_version_number           2014-3
_shelx_res_checksum              71885
_shelx_hkl_checksum              77690