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_4131717
_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_formula_moiety         'C21 H25 N O3'
_chemical_formula_sum            'C21 H25 N O3'
_chemical_formula_weight         339.42
_space_group_crystal_system      orthorhombic
_space_group_IT_number           61
_space_group_name_Hall           '-P 2ac 2ab'
_space_group_name_H-M_alt        'P b c a'
_atom_sites_solution_hydrogens   geom
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            8
_cell_length_a                   13.9532(9)
_cell_length_b                   12.0587(7)
_cell_length_c                   20.2467(12)
_cell_measurement_reflns_used    9918
_cell_measurement_temperature    299(2)
_cell_measurement_theta_max      68.23
_cell_measurement_theta_min      5.71
_cell_volume                     3406.7(4)
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_diffrn_ambient_temperature      299(2)
_diffrn_measured_fraction_theta_full 0.985
_diffrn_measured_fraction_theta_max 0.984
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0240
_diffrn_reflns_av_unetI/netI     0.0158
_diffrn_reflns_Laue_measured_fraction_full 0.985
_diffrn_reflns_Laue_measured_fraction_max 0.984
_diffrn_reflns_limit_h_max       14
_diffrn_reflns_limit_h_min       -16
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       24
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            18197
_diffrn_reflns_point_group_measured_fraction_full 0.985
_diffrn_reflns_point_group_measured_fraction_max 0.984
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         68.351
_diffrn_reflns_theta_min         4.367
_exptl_absorpt_coefficient_mu    0.702
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.324
_exptl_crystal_description       block
_exptl_crystal_F_000             1456
_exptl_crystal_size_max          0.260
_exptl_crystal_size_mid          0.200
_exptl_crystal_size_min          0.160
_refine_diff_density_max         0.231
_refine_diff_density_min         -0.148
_refine_diff_density_rms         0.033
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.304
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     228
_refine_ls_number_reflns         3081
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.304
_refine_ls_R_factor_all          0.0492
_refine_ls_R_factor_gt           0.0429
_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^)+(0.1000P)^2^] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1505
_refine_ls_wR_factor_ref         0.1570
_reflns_Friedel_coverage         0.000
_reflns_number_gt                2688
_reflns_number_total             3081
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b09186_si_007.cif
_cod_data_source_block           a_0ma
_cod_database_code               4131717
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.839
_shelx_estimated_absorpt_t_max   0.896
_shelx_res_checksum              48777
_shelx_hkl_checksum              98054