Total synthesis of (+/-)-powelline and (+/-)-buphanidrine.
Bogle, Katherine M.; Hirst, David J.; Dixon, Darren J.; Organic letters 12 (2010) 1252–1254; doi:10.1021/ol1000654

data_1502844
_publ_section_title
;
 Total synthesis of (+/-)-powelline and (+/-)-buphanidrine.
;
_journal_issue                   6
_journal_name_full               'Organic letters'
_journal_page_first              1252
_journal_page_last               1254
_journal_paper_doi               10.1021/ol1000654
_journal_volume                  12
_journal_year                    2010
_chemical_formula_moiety         'C21 H25 N1 O6'
_chemical_formula_sum            'C21 H25 N O6'
_chemical_formula_weight         387.43
_chemical_melting_point          ?
_space_group_IT_number           14
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2ybc'
_symmetry_space_group_name_H-M   'P 1 21/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_audit_creation_date             09-10-04
_audit_creation_method           CRYSTALS_ver_12.86
_cell_angle_alpha                90
_cell_angle_beta                 92.6152(6)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   5.89750(10)
_cell_length_b                   12.5457(2)
_cell_length_c                   25.9990(4)
_cell_measurement_reflns_used    4452
_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     1921.62(5)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1997-2001).'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'CAMERON (Watkin et al., 1996)'
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.991
_diffrn_measured_fraction_theta_max 0.989
_diffrn_measurement_device       'Nonius KappaCCD'
_diffrn_measurement_device_type  Area
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.042
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       33
_diffrn_reflns_limit_l_min       -33
_diffrn_reflns_number            22970
_diffrn_reflns_theta_full        26.938
_diffrn_reflns_theta_max         27.488
_diffrn_reflns_theta_min         5.096
_diffrn_standards_decay_%        -
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.098
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.93
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.339
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.26
_exptl_crystal_size_mid          0.24
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.38
_refine_diff_density_min         -0.36
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.9348
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     253
_refine_ls_number_reflns         4365
_refine_ls_number_restraints     0
_refine_ls_R_factor_all          0.0592
_refine_ls_R_factor_gt           0.0411
_refine_ls_shift/su_max          0.000377
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.04P)^2^ + 0.82P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0975
_refine_ls_wR_factor_gt          0.0899
_refine_ls_wR_factor_ref         0.0975
_reflns_limit_h_max              7
_reflns_limit_h_min              -7
_reflns_limit_k_max              16
_reflns_limit_k_min              0
_reflns_limit_l_max              33
_reflns_limit_l_min              0
_reflns_number_gt                3384
_reflns_number_total             4365
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   2.17
_oxford_diffrn_Wilson_scale      3.92
_oxford_refine_ls_r_factor_ref   0.0592
_oxford_refine_ls_scale          0.5077(8)
_oxford_reflns_number_all        4365
_oxford_reflns_threshold_expression_ref I>-3.0\s(I)
_oxford_structure_analysis_title '8140819 009djd09'
_cod_data_source_file            ol1000654_si_001.cif
_cod_data_source_block           009djd09_enone
_cod_depositor_comments
;
The following automatic conversions were performed:

'_chemical_melting_point' value 'not measured' was changed to '?' -
the value is undefined or not given.

'_symmetry_cell_setting' value
'Monoclinic' changed to 'monoclinic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

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

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_sg_symbol_H-M      'P 1 21/c 1 '
_cod_original_formula_sum        'C21 H25 N1 O6'
_cod_database_code               1502844