Total Synthesis of the Caged Indole Alkaloid Arboridinine Enabled by aza-Prins and Metal-Mediated Cyclizations.
Gan, Pei; Pitzen, Jennifer; Qu, Pei; Snyder, Scott A.; Journal of the American Chemical Society  (2018) –; doi:10.1021/jacs.7b07724

data_4127006
_publ_section_title
;
 Total Synthesis of the Caged Indole Alkaloid Arboridinine Enabled by
 aza-Prins and Metal-Mediated Cyclizations.
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_paper_doi               10.1021/jacs.7b07724
_journal_year                    2018
_chemical_formula_moiety         'C19 H22 N2 O'
_chemical_formula_sum            'C19 H22 N2 O'
_chemical_formula_weight         294.38
_space_group_crystal_system      triclinic
_space_group_IT_number           2
_space_group_name_Hall           '-P 1'
_space_group_name_H-M_alt        'P -1'
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   mixed
_atom_sites_solution_primary     dual
_atom_sites_solution_secondary   difmap
_audit_creation_date             2017-02-02
_audit_creation_method
;
Olex2 1.2
(compiled 2017.01.04 svn.r3372 for OlexSys, GUI svn.r5292)
;
_cell_angle_alpha                85.3610(12)
_cell_angle_beta                 89.3880(12)
_cell_angle_gamma                85.8876(14)
_cell_formula_units_Z            4
_cell_length_a                   8.1493(3)
_cell_length_b                   11.6100(4)
_cell_length_c                   16.2904(6)
_cell_measurement_reflns_used    9907
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      77.68
_cell_measurement_theta_min      3.83
_cell_volume                     1532.27(10)
_computing_cell_refinement       'SAINT V.8.35A (Bruker AXS Inc., 2013)'
_computing_data_collection       'APEX3 v.2015.9-0 (Bruker AXS Inc., 2015)'
_computing_data_reduction        'SAINT V.8.35A (Bruker AXS Inc., 2013)'
_computing_molecular_graphics
;
OLEX2: a complete structure solution, refinement and analysis program 
Dolomanov et al., 2009

Mercury: visualization and analysis of crystal structures
Macrae, et al., 2006

O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann.
J. Appl. Cryst. (2009). 42, 339-341;

C. F. Macrae, P. R. Edgington, P. McCabe, E. Pidcock, G. P. Shields, R. Taylor,
M. Towler and J. van de Streek, J. Appl. Cryst. (2006). 39, 453-457.
;
_computing_publication_material
;
 APEX3 v.2015.5-2 (Bruker AXS Inc., 2015)
 OLEX2 (Dolomanov et al., 2009)
;
_computing_structure_refinement  'XL-2014/7 (Sheldrick, 2015b)'
_computing_structure_solution    'XT 2014/5 (Sheldrick, 2015a)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 10.4167
_diffrn_detector_type            CMOS
_diffrn_measured_fraction_theta_full 0.984
_diffrn_measured_fraction_theta_max 0.958
_diffrn_measurement_device       'three-circle diffractometer'
_diffrn_measurement_device_type  'Bruker D8 Venture PHOTON 100 CMOS'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  mirrors
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0291
_diffrn_reflns_av_unetI/netI     0.0279
_diffrn_reflns_Laue_measured_fraction_full 0.984
_diffrn_reflns_Laue_measured_fraction_max 0.958
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            20422
_diffrn_reflns_point_group_measured_fraction_full 0.984
_diffrn_reflns_point_group_measured_fraction_max 0.958
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         77.669
_diffrn_reflns_theta_min         2.721
_diffrn_source                   'INCOATEC ImuS micro-focus source'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.619
_exptl_absorpt_correction_T_max  0.7541
_exptl_absorpt_correction_T_min  0.6513
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. 
wR2(int) was 0.0845 before and 0.0447 after correction
;
_exptl_crystal_colour            colourless
_exptl_crystal_colour_primary    colourless
_exptl_crystal_density_diffrn    1.276
_exptl_crystal_description       block
_exptl_crystal_F_000             632
_exptl_crystal_size_max          0.36
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.322
_refine_diff_density_min         -0.198
_refine_diff_density_rms         0.044
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.045
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     409
_refine_ls_number_reflns         6268
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.045
_refine_ls_R_factor_all          0.0483
_refine_ls_R_factor_gt           0.0398
_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^)+(0.0551P)^2^+0.5210P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1002
_refine_ls_wR_factor_ref         0.1095
_reflns_Friedel_coverage         0.000
_reflns_number_gt                5334
_reflns_number_total             6268
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ja7b07724_si_002.cif
_cod_data_source_block           0363_peigan
_cod_database_code               4127006
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_max   0.952
_shelx_estimated_absorpt_t_min   0.808
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C8(H8), C36(H36)
2.b Secondary CH2 refined with riding coordinates:
 C11(H11A,H11B), C17(H17A,H17B), C18(H18A,H18B), C19(H19A,H19B), C27(H27A,
 H27B), C28(H28A,H28B), C31(H31A,H31B), C38(H38A,H38B)
2.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C3(H3), C4(H4), C5(H5), C21(H21), C22(H22), C23(H23), C24(H24)
2.d X=CH2 refined with riding coordinates:
 C13(H13A,H13B), C34(H34A,H34B)
2.e Idealised Me refined as rotating group:
 C9(H9A,H9B,H9C), C16(H16A,H16B,H16C), C32(H32A,H32B,H32C), C37(H37A,H37B,H37C)
;
_shelx_res_checksum              60627
_shelx_hkl_checksum              49913
_olex2_submission_special_instructions 'No special instructions were received'