Enantioselective total synthesis and X-ray structures of the tetrahydroprotoberberine alkaloids (-)-(S)-tetrahydropalmatrubine and (-)-(S)-corytenchine.
Zein, Ahmed L.; Dawe, Louise N.; Georghiou, Paris E.; Journal of natural products 73 (2010) 1427–1430; doi:10.1021/np1001169

data_1502806
_publ_section_title
;
 Enantioselective total synthesis and X-ray structures of the
 tetrahydroprotoberberine alkaloids (-)-(S)-tetrahydropalmatrubine and
 (-)-(S)-corytenchine.
;
_journal_issue                   8
_journal_name_full               'Journal of natural products'
_journal_page_first              1427
_journal_page_last               1430
_journal_paper_doi               10.1021/np1001169
_journal_volume                  73
_journal_year                    2010
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C20 H23 N O4'
_chemical_formula_sum            'C20 H23 N O4'
_chemical_formula_weight         341.41
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_Int_Tables_number      19
_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                   7.2621(12)
_cell_length_b                   8.0445(13)
_cell_length_c                   28.318(5)
_cell_measurement_reflns_used    5268
_cell_measurement_temperature    153(2)
_cell_measurement_theta_max      29.5939
_cell_measurement_theta_min      2.1576
_cell_volume                     1654.3(5)
_computing_cell_refinement       'CrystalClear (Rigaku/MSC Inc., 2005)'
_computing_data_collection       'CrystalClear (Rigaku/MSC Inc., 2005)'
_computing_data_reduction        'CrystalClear (Rigaku/MSC Inc., 2005)'
_computing_molecular_graphics    'CrystalStructure3.7.0(Rigaku/MSC Inc.,2005)'
_computing_publication_material  'CrystalStructure3.7.0(Rigaku/MSC Inc.,2005)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      153(1)
_diffrn_detector_area_resol_mean 14.63
_diffrn_measured_fraction_theta_full 0.999
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'Rigaku Saturn'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  'graphite - Rigaku SHINE'
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71075
_diffrn_reflns_av_R_equivalents  0.0245
_diffrn_reflns_av_sigmaI/netI    0.0132
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       10
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -35
_diffrn_reflns_number            22912
_diffrn_reflns_theta_full        26.50
_diffrn_reflns_theta_max         26.50
_diffrn_reflns_theta_min         2.63
_exptl_absorpt_coefficient_mu    0.095
_exptl_absorpt_correction_T_max  0.9886
_exptl_absorpt_correction_T_min  0.9785
_exptl_absorpt_correction_type   numerical
_exptl_absorpt_process_details   '(T. Higashi, 2000)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.371
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Prism
_exptl_crystal_F_000             728
_exptl_crystal_size_max          0.30
_exptl_crystal_size_mid          0.22
_exptl_crystal_size_min          0.17
_refine_diff_density_max         0.156
_refine_diff_density_min         -0.210
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.0(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.057
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     231
_refine_ls_number_reflns         3418
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.057
_refine_ls_R_factor_all          0.0326
_refine_ls_R_factor_gt           0.0325
_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^)+(0.0488P)^2^+0.3484P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0843
_refine_ls_wR_factor_ref         0.0844
_reflns_number_gt                3406
_reflns_number_total             3418
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            np1001169_si_003.cif
_cod_data_source_block           3
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Numerical' changed to
'numerical' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
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_cod_database_code               1502806