The cascade radical cyclisation approach to prenylated alkaloids: synthesis of stephacidin A and notoamide B.
Simpkins, Nigel S.; Pavlakos, Ilias; Weller, Michael D.; Male, Louise; Organic & biomolecular chemistry 11 (2013) 4957–4970; doi:10.1039/c3ob40979a

data_7153034
_publ_section_title
;
 The cascade radical cyclisation approach to prenylated alkaloids:
 synthesis of stephacidin A and notoamide B.
;
_journal_issue                   30
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              4957
_journal_page_last               4970
_journal_paper_doi               10.1039/c3ob40979a
_journal_volume                  11
_journal_year                    2013
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C21 H25 N3 O2, C H4 O'
_chemical_formula_sum            'C22 H29 N3 O3'
_chemical_formula_weight         383.48
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   8.0470(17)
_cell_length_b                   10.678(3)
_cell_length_c                   22.331(5)
_cell_measurement_reflns_used    6511
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      27.6
_cell_measurement_theta_min      2.6
_cell_volume                     1918.8(8)
_computing_cell_refinement
;
CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)
;
_computing_data_collection
;
CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)
;
_computing_data_reduction
;
CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)
;
_computing_molecular_graphics
;
OLEX2 (Dolomanov, O.V., Bourhis, L.J., Gildea, R.J., Howard, J.A.K,
& Puschmann, H., 2009)
;
_computing_publication_material  'WinGX (Farrugia, 1999)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_detector                 CCD
_diffrn_detector_area_resol_mean 28.5714
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.998
_diffrn_measurement_device
;
AFC12 (Right): Kappa 3 circle
;
_diffrn_measurement_device_type
;
Rigaku Saturn724+ (2x2 bin mode)
;
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_radiation_monochromator  Confocal
_diffrn_radiation_source         'Rotating Anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0754
_diffrn_reflns_av_sigmaI/netI    0.0623
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       13
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -29
_diffrn_reflns_number            14736
_diffrn_reflns_theta_full        27.47
_diffrn_reflns_theta_max         27.47
_diffrn_reflns_theta_min         3.12
_exptl_absorpt_coefficient_mu    0.089
_exptl_absorpt_correction_T_max  0.9991
_exptl_absorpt_correction_T_min  0.9894
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrystalClear-SM Expert 2.0 r7 (Rigaku, 2011)
;
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.328
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       Plate
_exptl_crystal_F_000             824
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.01
_refine_diff_density_max         0.314
_refine_diff_density_min         -0.337
_refine_diff_density_rms         0.051
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.131
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_refine_ls_matrix_type           full
_refine_ls_number_parameters     267
_refine_ls_number_reflns         2518
_refine_ls_number_restraints     4
_refine_ls_restrained_S_all      1.139
_refine_ls_R_factor_all          0.0727
_refine_ls_R_factor_gt           0.0628
_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^)+(0.0490P)^2^+0.5234P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1275
_refine_ls_wR_factor_ref         0.1319
_reflns_number_gt                2262
_reflns_number_total             2518
_reflns_threshold_expression     >2\s(I)
_cod_data_source_file            c3ob40979a.txt
_cod_data_source_block           16b
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from
2011-04-26.

'_exptl_absorpt_correction_type' value 'Multi-scan'
changed to 'multi-scan' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_database_code               7153034