Total Synthesis of the Cytostatic Marine Natural Product Dibromophakellstatin via Three-Component Imidazolidinone Anellation
Michael Zöllinger; Peter Mayer; Thomas Lindel; Journal of Organic Chemistry 71 (2006) 9431–9439; doi:10.1021/jo061813u

data_4022163
_publ_contact_author_address
;
Department of Chemistry and Biochemistry
Ludwig Maximilian University
Butenandtstrasse 5-13 (Haus F)
D-81377 Munich
Germany
;
_publ_contact_author_email       thomas.lindel@cup.uni-muenchen.de
_publ_contact_author_fax         '+49 089-2180-77734'
_publ_contact_author_name        'Thomas Lindel'
_publ_section_title
;
 Total Synthesis of the Cytostatic Marine Natural Product
 Dibromophakellstatin via Three-Component Imidazolidinone Anellation
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              9431
_journal_page_last               9439
_journal_paper_doi               10.1021/jo061813u
_journal_volume                  71
_journal_year                    2006
_chemical_formula_moiety         'C21 H22 N4 O7 S, C H4 O'
_chemical_formula_sum            'C22 H26 N4 O8 S'
_chemical_formula_weight         506.530
_space_group_IT_number           13
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  '-P 2yc'
_symmetry_space_group_name_H-M   'P 1 2/c 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_author_name               'Mayer, P.'
_audit_block_code                C21H22N4O7S_MeOH_kn210_lindel
_audit_creation_date             16-May-06
_audit_creation_method           'form98_non/compatible with shelxl97-2'
_audit_update_record             06-Jul-06
_cell_angle_alpha                90.00
_cell_angle_beta                 103.3433(6)
_cell_angle_gamma                90.00
_cell_formula_units_Z            8
_cell_length_a                   24.4242(3)
_cell_length_b                   12.9575(2)
_cell_length_c                   15.6062(2)
_cell_measurement_reflns_used    9818
_cell_measurement_temperature    200(2)
_cell_measurement_theta_max      26.022
_cell_measurement_theta_min      3.134
_cell_volume                     4805.67(11)
_computing_cell_refinement       'HKL Scalepack (Otwinowski & Minor 1997)'
_computing_data_collection       'Collect (Nonius BV, 1997-2000)'
_computing_data_reduction
'HKL Denzo and Scalepack (Otwinowski & Minor 1997)'
_computing_structure_refinement
'SHELXL-97 (G. M. Sheldrick. University of G\"ottingen, 97-2 version)'
_computing_structure_solution
;
A. Altomare, M. C. Burla, M. Camalli, G. L. Cascarano, C. Giacovazzo, A.
Guagliardi, A. G. G. Moliterni, G. Polidori, R. Spagna: SIR97: a new tool for
crystal structure determination and refinement; J. Appl. Crystallogr. 1999,
32, 115-119.
;
_diffrn_ambient_temperature      200(2)
_diffrn_detector_area_resol_mean 9
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device       '95mm CCD camera on \k-goniostat'
_diffrn_measurement_device_type  KappaCCD
_diffrn_measurement_method       omega-scan
_diffrn_orient_matrix_type       'by Nonius Collect from scalepack cell'
_diffrn_orient_matrix_UB_11      0.0179713
_diffrn_orient_matrix_UB_12      0.0031204
_diffrn_orient_matrix_UB_13      0.0420043
_diffrn_orient_matrix_UB_21      0.0632765
_diffrn_orient_matrix_UB_22      0.0029601
_diffrn_orient_matrix_UB_23      -0.0019041
_diffrn_orient_matrix_UB_31      -0.0031585
_diffrn_orient_matrix_UB_32      0.0770554
_diffrn_orient_matrix_UB_33      -0.0016278
_diffrn_radiation_collimation    0.25
_diffrn_radiation_monochromator  'Montel graded multilayer xray optics'
_diffrn_radiation_source         'rotating anode'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0293
_diffrn_reflns_av_sigmaI/netI    0.0466
_diffrn_reflns_limit_h_max       30
_diffrn_reflns_limit_h_min       -30
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -19
_diffrn_reflns_number            18310
_diffrn_reflns_theta_full        26.04
_diffrn_reflns_theta_max         26.04
_diffrn_reflns_theta_min         3.14
_diffrn_source_current           55.00
_diffrn_source_power             3.025
_diffrn_source_type              'FR 591 generator'
_diffrn_source_voltage           55.00
_exptl_absorpt_coefficient_mu    0.190
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Denzo Scalepack'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.40022(3)
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2128
_exptl_crystal_size_max          0.21
_exptl_crystal_size_mid          0.12
_exptl_crystal_size_min          0.09
_refine_diff_density_max         0.219
_refine_diff_density_min         -0.384
_refine_diff_density_rms         0.045
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.046
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     656
_refine_ls_number_reflns         9437
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.046
_refine_ls_R_factor_all          0.0759
_refine_ls_R_factor_gt           0.0435
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0663P)^2^+0.5623P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1138
_refine_ls_wR_factor_ref         0.1288
_reflns_number_gt                6326
_reflns_number_total             9437
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo061813urom20060901_080157.cif
_cod_original_sg_symbol_H-M      'P 2/c'
_cod_database_code               4022163