Calyciphylline B-type Alkaloids: Evolution of a Synthetic Strategy to (-)-Daphlongamine H.
Hugelshofer, Cedric L.; Palani, Vignesh; Sarpong, Richmond; The Journal of organic chemistry 84 (2019) 14069–14091; doi:10.1021/acs.joc.9b02223

data_4034539
_publ_section_title
;
 Calyciphylline B-type Alkaloids: Evolution of a Synthetic Strategy to
 (-)-Daphlongamine H.
;
_journal_issue                   21
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              14069
_journal_page_last               14091
_journal_paper_doi               10.1021/acs.joc.9b02223
_journal_volume                  84
_journal_year                    2019
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C13 H21 N O3 S'
_chemical_formula_sum            'C13 H21 N O3 S'
_chemical_formula_weight         271.37
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.17650(10)
_cell_length_b                   9.22680(10)
_cell_length_c                   24.6586(2)
_cell_measurement_reflns_used    13695
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      78.7500
_cell_measurement_theta_min      4.8220
_cell_volume                     1405.28(3)
_computing_cell_refinement       'CrysAlisPro 1.171.39.46e (Rigaku OD, 2018)'
_computing_data_collection       'CrysAlisPro 1.171.39.46e (Rigaku OD, 2018)'
_computing_data_reduction        'CrysAlisPro 1.171.39.46e (Rigaku OD, 2018)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'SHELXL-2014/7 (Sheldrick, 2014)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'ROD, Synergy Custom DW system, Pilatus 200K'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0321
_diffrn_reflns_av_unetI/netI     0.0141
_diffrn_reflns_Laue_measured_fraction_full 0.988
_diffrn_reflns_Laue_measured_fraction_max 0.988
_diffrn_reflns_limit_h_max       7
_diffrn_reflns_limit_h_min       -7
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -30
_diffrn_reflns_number            14126
_diffrn_reflns_point_group_measured_fraction_full 0.991
_diffrn_reflns_point_group_measured_fraction_max 0.991
_diffrn_reflns_theta_full        74.000
_diffrn_reflns_theta_max         74.496
_diffrn_reflns_theta_min         5.118
_diffrn_source                   'Rotating-anode X-ray tube'
_exptl_absorpt_coefficient_mu    2.060
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.70346
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Olex2 1.2-ac3
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.283
_exptl_crystal_description       block
_exptl_crystal_F_000             584
_exptl_crystal_size_max          0.350
_exptl_crystal_size_mid          0.210
_exptl_crystal_size_min          0.180
_refine_diff_density_max         0.236
_refine_diff_density_min         -0.212
_refine_diff_density_rms         0.039
_refine_ls_abs_structure_details
;
 Flack x determined using 1175 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.011(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.047
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     170
_refine_ls_number_reflns         2854
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.047
_refine_ls_R_factor_all          0.0249
_refine_ls_R_factor_gt           0.0249
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0382P)^2^+0.4717P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0660
_refine_ls_wR_factor_ref         0.0660
_reflns_Friedel_coverage         0.704
_reflns_Friedel_fraction_full    0.995
_reflns_Friedel_fraction_max     0.995
_reflns_number_gt                2854
_reflns_number_total             2854
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo9b02223_si_002.cif
_cod_data_source_block           CH6_131p
_cod_database_code               4034539
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.533
_shelx_estimated_absorpt_t_max   0.708
_shelx_res_checksum              93770
_shelx_hkl_checksum              52445