Synthesis of fully substituted polyhydroxylated pyrrolizidines via Cope-House cyclization.
Zhang, Wei; Sato, Kasumi; Kato, Atsushi; Jia, Yue-Mei; Hu, Xiang-Guo; Wilson, Francis X.; van Well, Renate; Horne, Graeme; Fleet, George W. J.; Nash, Robert J.; Yu, Chu-Yi; Organic letters 13 (2011) 4414–4417; doi:10.1021/ol201749c

data_1502386
_publ_section_title
;
 Synthesis of fully substituted polyhydroxylated pyrrolizidines via
 Cope-House cyclization.
;
_journal_issue                   16
_journal_name_full               'Organic letters'
_journal_page_first              4414
_journal_page_last               4417
_journal_paper_doi               10.1021/ol201749c
_journal_volume                  13
_journal_year                    2011
_chemical_absolute_configuration unk
_chemical_formula_moiety         'C32 H39 N O6'
_chemical_formula_sum            'C32 H39 N O6'
_chemical_formula_weight         533.64
_space_group_IT_number           4
_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
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 115.10(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   12.634(3)
_cell_length_b                   8.8253(18)
_cell_length_c                   14.418(3)
_cell_measurement_reflns_used    5318
_cell_measurement_temperature    173(2)
_cell_measurement_theta_max      27.4806
_cell_measurement_theta_min      1.5597
_cell_volume                     1455.8(7)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_molecular_graphics
;
 Mercury: visualization and analysis of crystal structures, 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., 39, 453-457, 2006.
;
_computing_publication_material  'SHELX-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      173(2)
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Saturn724+ CCD'
_diffrn_measurement_method       '\w scans at fixed \c = 45\%'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0355
_diffrn_reflns_av_sigmaI/netI    0.0288
_diffrn_reflns_limit_h_max       16
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       18
_diffrn_reflns_limit_l_min       -18
_diffrn_reflns_number            12894
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.56
_exptl_absorpt_coefficient_mu    0.083
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.7928
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'CrystalClear (Rigaku Inc., 2008)'
_exptl_crystal_colour            Colorless
_exptl_crystal_density_diffrn    1.217
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             572
_exptl_crystal_size_max          0.57
_exptl_crystal_size_mid          0.37
_exptl_crystal_size_min          0.25
_refine_diff_density_max         0.428
_refine_diff_density_min         -0.454
_refine_diff_density_rms         0.187
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.5(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.231
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     352
_refine_ls_number_reflns         3548
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.231
_refine_ls_R_factor_all          0.0484
_refine_ls_R_factor_gt           0.0422
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0792P)^2^+0.0528P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1231
_refine_ls_wR_factor_ref         0.1346
_reflns_number_gt                3468
_reflns_number_total             3548
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol201749c_si_005.cif
_cod_data_source_block           a
_cod_original_cell_volume        1455.8(5)
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               1502386