Intramolecular Imino Diels‒Alder Reaction: Progress toward the Synthesis of Uncialamycin
Sandy Desrat; Pierre van de Weghe; Journal of Organic Chemistry 74 (2009) 6728–6734; doi:10.1021/jo901291t

data_4024824
_publ_section_title
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Intramolecular Imino Diels--Alder Reaction: Progress toward the Synthesis
of Uncialamycin
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              6728
_journal_page_last               6734
_journal_paper_doi               10.1021/jo901291t
_journal_volume                  74
_journal_year                    2009
_chemical_formula_sum            'C32 H39 N O4 Si'
_chemical_formula_weight         529.73
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           2
_symmetry_cell_setting           triclinic
_symmetry_space_group_name_Hall  '-P 1'
_symmetry_space_group_name_H-M   'P -1'
_atom_sites_solution_hydrogens   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                86.611(5)
_cell_angle_beta                 88.651(5)
_cell_angle_gamma                75.546(6)
_cell_formula_units_Z            4
_cell_length_a                   13.1766(8)
_cell_length_b                   13.2035(8)
_cell_length_c                   17.3898(9)
_cell_measurement_temperature    90(2)
_cell_volume                     2924.4(3)
_computing_cell_refinement
'CrysAlis RED, Oxford Diffraction Ltd.,Version 1.171.26'
_computing_data_collection
'CrysAlis CCD, Oxford Diffraction Ltd.,Version 1.171.26'
_computing_data_reduction
'CrysAlis RED, Oxford Diffraction Ltd.,Version 1.171.26'
_computing_molecular_graphics    'PLATON_(Spek, 1998)'
_computing_publication_material  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR-97_(Altomare & al., 1998)'
_diffrn_ambient_temperature      90(2)
_diffrn_detector_area_resol_mean 19.64
_diffrn_measured_fraction_theta_full 0.858
_diffrn_measured_fraction_theta_max 0.858
_diffrn_measurement_device_type  'CCD Saphire 3 Xcalibur'
_diffrn_measurement_method       'omega scan'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71069
_diffrn_reflns_av_R_equivalents  0.0560
_diffrn_reflns_av_sigmaI/netI    0.2669
_diffrn_reflns_limit_h_max       19
_diffrn_reflns_limit_h_min       -19
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       22
_diffrn_reflns_limit_l_min       -25
_diffrn_reflns_number            27937
_diffrn_reflns_theta_full        32.05
_diffrn_reflns_theta_max         32.05
_diffrn_reflns_theta_min         2.75
_exptl_absorpt_coefficient_mu    0.117
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.203
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             1136
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.15
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.963
_refine_diff_density_min         -0.530
_refine_diff_density_rms         0.063
_refine_ls_extinction_method     none
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_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     685
_refine_ls_number_reflns         17494
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.808
_refine_ls_R_factor_all          0.1519
_refine_ls_R_factor_gt           0.0555
_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^)+(0.0454P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1157
_refine_ls_wR_factor_ref         0.1249
_reflns_number_gt                6140
_reflns_number_total             17494
_reflns_threshold_expression     >2sigma(I)
_cod_duplicate_entry             4028959
_cod_data_source_file            jo901291t_si_002.cif
_cod_data_source_block           sd140
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Triclinic' changed to 'triclinic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 
;
_cod_original_sg_symbol_H-M      P-1
_cod_database_code               4024824