Asymmetric Syntheses of the Homalium Alkaloids (-)-(S,S)-Homaline and (-)-(R,R)-Hopromine
Stephen G. Davies; James A. Lee; Paul M. Roberts; Jeffrey P. Stonehouse; James E. Thomson; Journal of Organic Chemistry 77 (2012) 7028–7045; doi:10.1021/jo3012732

data_4027406
_publ_contact_author             'Stephen G. Davies'
_publ_contact_author_email       steve.davies@chem.ox.ac.uk
_publ_contact_author_fax         '+44 1865 275633'
_publ_contact_author_phone       '+44 1865 275695'
_publ_section_title
;
 Asymmetric Syntheses of the Homalium Alkaloids (-)-(S,S)-Homaline and
 (-)-(R,R)-Hopromine
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              7028
_journal_page_last               7045
_journal_paper_doi               10.1021/jo3012732
_journal_volume                  77
_journal_year                    2012
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C14 H20 N2 O2'
_chemical_formula_sum            'C14 H20 N2 O2'
_chemical_formula_weight         248.32
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_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_cell_angle_alpha                90
_cell_angle_beta                 93.565(2)
_cell_angle_gamma                90
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_cell_length_b                   6.8706(3)
_cell_length_c                   15.3642(6)
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_cell_measurement_temperature    150
_cell_measurement_theta_max      27
_cell_measurement_theta_min      5
_cell_volume                     634.50(5)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 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    'USER DEFINED STRUCTURE SOLUTION'
_diffrn_ambient_temperature      150
_diffrn_measured_fraction_theta_full 0.989
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device       Area
_diffrn_measurement_device_type  'Nonius KappaCCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
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_diffrn_reflns_av_R_equivalents  0.032
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
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_diffrn_reflns_limit_k_min       -8
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_diffrn_reflns_limit_l_min       -19
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_diffrn_reflns_theta_max         27.478
_diffrn_reflns_theta_min         5.124
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.088
_exptl_absorpt_correction_T_max  0.99
_exptl_absorpt_correction_T_min  0.98
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.300
_exptl_crystal_description       plate
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_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    none
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_refine_ls_R_factor_gt           0.0430
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_refine_ls_shift/su_mean         0.0000672
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.05P)^2^ + 0.21P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
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_refine_ls_wR_factor_gt          0.0971
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_reflns_limit_h_max              7
_reflns_limit_h_min              -7
_reflns_limit_k_max              8
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_reflns_limit_l_min              0
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_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   0.00
_oxford_diffrn_Wilson_scale      0.00
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_oxford_refine_ls_scale          0.784(4)
_oxford_reflns_number_all        1545
_oxford_reflns_threshold_expression_ref I>-3.0\s(I)
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_cod_data_source_block           40
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