Synthesis of a Model Tetracyclic Core Structure of Calyciphylline B-Type Alkaloids.
Chattopadhyay, Amit Kumar; Menz, Helge; Ly, Vu Linh; Dorich, Stéphane; Hanessian, Stephen; The Journal of organic chemistry 81 (2016) 2182–2188; doi:10.1021/acs.joc.5b02875

data_4036588
_publ_section_title
;
 Synthesis of a Model Tetracyclic Core Structure of Calyciphylline B-Type
 Alkaloids.
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_journal_issue                   5
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              2182
_journal_page_last               2188
_journal_paper_doi               10.1021/acs.joc.5b02875
_journal_volume                  81
_journal_year                    2016
_chemical_absolute_configuration rmad
_chemical_compound_source        'Synthesized by the authors. See text'
_chemical_formula_moiety         'C18 H29 N O4'
_chemical_formula_sum            'C18 H29 N O4'
_chemical_formula_weight         323.42
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_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                   6.57320(10)
_cell_length_b                   10.1967(2)
_cell_length_c                   27.5648(5)
_cell_measurement_reflns_used    28110
_cell_measurement_temperature    200
_cell_measurement_theta_max      71.59
_cell_measurement_theta_min      3.21
_cell_volume                     1847.53(6)
_computing_cell_refinement       'SAINT V7.60A(Bruker AXS, 2008)'
_computing_data_collection       'APEX2 (Bruker AXS, 2008)'
_computing_data_reduction        'SAINT V7.60A(Bruker AXS, 2008)'
_computing_molecular_graphics    'SHELXTL v6.12 (Bruker AXS, 2001)'
_computing_publication_material  'UdMX (Maris, 2004)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      200
_diffrn_detector_area_resol_mean 5.5
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Bruker Smart 6000'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  'Helios optics'
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.035
_diffrn_reflns_av_sigmaI/netI    0.0148
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       32
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            34264
_diffrn_reflns_theta_full        71.96
_diffrn_reflns_theta_max         71.96
_diffrn_reflns_theta_min         3.21
_exptl_absorpt_coefficient_mu    0.655
_exptl_absorpt_correction_T_max  0.9552
_exptl_absorpt_correction_T_min  0.6636
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Sheldrick, 1996)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.163
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             704
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.09
_exptl_crystal_size_min          0.07
_refine_diff_density_max         0.125
_refine_diff_density_min         -0.141
_refine_diff_density_rms         0.031
_refine_ls_abs_structure_details 'Flack H D (1983), 1499 Friedel Pairs'
_refine_ls_abs_structure_Flack   0.07(16)
_refine_ls_extinction_coef       0.0030(4)
_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   1.067
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     214
_refine_ls_number_reflns         3613
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.068
_refine_ls_R_factor_all          0.0348
_refine_ls_R_factor_gt           0.0324
_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^)+(0.0647P)^2^+0.0332P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0888
_refine_ls_wR_factor_ref         0.0905
_reflns_number_gt                3347
_reflns_number_total             3613
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo5b02875_si_005.cif
_cod_data_source_block           ben101
_cod_depositor_comments
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The following automatic conversions were performed:

data item '_symmetry_cell_setting' value 'Orthorhombic' was changed
to 'orthorhombic' in accordance with the
/home/saulius/struct/COD-crude-data/automatic-downloads/DataCite-retrospective/ACS/depositions/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 last updated on
2011-04-26.

Automatic conversion script
Id: cif_fix_values 6909 2019-04-08 15:41:33Z antanas 
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_cod_original_sg_symbol_H-M      P212121
_cod_database_code               4036588