Total Synthesis of Longeracinphyllin A.
Li, Jian; Zhang, Wenhao; Zhang, Fei; Chen, Yu; Li, Ang; Journal of the American Chemical Society 139 (2017) 14893–14896; doi:10.1021/jacs.7b09186

data_4131716
_publ_section_title
;
 Total Synthesis of Longeracinphyllin A.
;
_journal_issue                   42
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              14893
_journal_page_last               14896
_journal_paper_doi               10.1021/jacs.7b09186
_journal_volume                  139
_journal_year                    2017
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C23 H27 N O7'
_chemical_formula_sum            'C23 H27 N O7'
_chemical_formula_weight         429.45
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 107.689(2)
_cell_angle_gamma                90
_cell_formula_units_Z            2
_cell_length_a                   9.4222(6)
_cell_length_b                   7.4529(5)
_cell_length_c                   15.4791(12)
_cell_measurement_reflns_used    8396
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      68.39
_cell_measurement_theta_min      3.00
_cell_volume                     1035.59(13)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      173(2)
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.991
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0248
_diffrn_reflns_av_unetI/netI     0.0280
_diffrn_reflns_Laue_measured_fraction_full 0.993
_diffrn_reflns_Laue_measured_fraction_max 0.991
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            9643
_diffrn_reflns_point_group_measured_fraction_full 0.989
_diffrn_reflns_point_group_measured_fraction_max 0.986
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.386
_diffrn_reflns_theta_min         2.996
_exptl_absorpt_coefficient_mu    0.847
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.377
_exptl_crystal_description       block
_exptl_crystal_F_000             456
_exptl_crystal_size_max          0.180
_exptl_crystal_size_mid          0.170
_exptl_crystal_size_min          0.150
_exptl_transmission_factor_max   0.7531
_exptl_transmission_factor_min   0.5615
_refine_diff_density_max         0.163
_refine_diff_density_min         -0.153
_refine_diff_density_rms         0.033
_refine_ls_abs_structure_details
;
 Flack x determined using 1655 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   -0.01(5)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.037
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     284
_refine_ls_number_reflns         3753
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.037
_refine_ls_R_factor_all          0.0280
_refine_ls_R_factor_gt           0.0272
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0453P)^2^+0.1469P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0736
_refine_ls_wR_factor_ref         0.0744
_reflns_Friedel_coverage         0.836
_reflns_Friedel_fraction_full    0.983
_reflns_Friedel_fraction_max     0.979
_reflns_number_gt                3676
_reflns_number_total             3753
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b09186_si_005.cif
_cod_data_source_block           ta_a
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               4131716
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.862
_shelx_estimated_absorpt_t_max   0.883
_shelx_res_checksum              72481
_shelx_hkl_checksum              79349