Total Synthesis of Thaxtomin A and Its Stereoisomers and Findings of Their Biological Activities
Zhang, Hongbo; Ning, Xin; Hang, Hang; Ru, Xuyan; Li, Haichen; Li, Yonghong; Wang, Lizhong; Zhang, Xiao; Yu, Shujing; Qiao, Yuanyuan; Wang, Xin; Wang, Peng George; Organic Letters 15 (2013) 5670–; doi:10.1021/ol4026556

data_1513111
_publ_section_title
;
 Total Synthesis of Thaxtomin A and Its Stereoisomers and Findings of
 Their Biological Activities
;
_journal_issue                   22
_journal_name_full               'Organic Letters'
_journal_page_first              5670
_journal_paper_doi               10.1021/ol4026556
_journal_volume                  15
_journal_year                    2013
_chemical_absolute_configuration 'S S'
_chemical_formula_sum            'C22 H22 N4 O6'
_chemical_formula_weight         438.44
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 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                 102.13(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.897(3)
_cell_length_b                   6.8317(14)
_cell_length_c                   20.380(4)
_cell_measurement_reflns_used    2992
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      26.0680
_cell_measurement_theta_min      2.7690
_cell_volume                     2027.8(7)
_computing_cell_refinement       crystalclear
_computing_data_collection       crystalclear
_computing_data_reduction        crystalclear
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_measured_fraction_theta_full 0.994
_diffrn_measured_fraction_theta_max 0.994
_diffrn_measurement_device_type  'rigaku saturn'
_diffrn_measurement_method       '\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  0.0649
_diffrn_reflns_av_sigmaI/netI    0.1079
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       25
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            8786
_diffrn_reflns_theta_full        26.01
_diffrn_reflns_theta_max         26.01
_diffrn_reflns_theta_min         2.77
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.107
_exptl_absorpt_correction_T_max  0.9873
_exptl_absorpt_correction_T_min  0.9790
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   crystalclear
_exptl_crystal_density_diffrn    1.436
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             920
_exptl_crystal_size_max          0.20
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.12
_refine_diff_density_max         0.203
_refine_diff_density_min         -0.297
_refine_diff_density_rms         0.058
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   1.7(14)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   0.975
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     297
_refine_ls_number_reflns         3887
_refine_ls_number_restraints     2
_refine_ls_restrained_S_all      0.975
_refine_ls_R_factor_all          0.0679
_refine_ls_R_factor_gt           0.0483
_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^)+(0.0380P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1041
_refine_ls_wR_factor_ref         0.1168
_reflns_number_gt                2545
_reflns_number_total             3887
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol4026556_si_003.cif
_cod_data_source_block           shelxl
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
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_original_sg_symbol_H-M      C2
_cod_database_code               1513111