Substrate-Controlled and Organocatalytic Asymmetric Synthesis of Carbocyclic Amino Acid Dipeptide Mimetics
Stephen Hanessian; Dilip K. Maji; Subramaniyan Govindan; Riccardo Matera; Marina Tintelnot-Blomley; Journal of Organic Chemistry 75 (2010) 2861–2876; doi:10.1021/jo100017t

data_4025384
_publ_section_title
;
 Substrate-Controlled and Organocatalytic Asymmetric Synthesis of
 Carbocyclic Amino Acid Dipeptide Mimetics
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              2861
_journal_page_last               2876
_journal_paper_doi               10.1021/jo100017t
_journal_volume                  75
_journal_year                    2010
_chemical_absolute_configuration rmad
_chemical_compound_source        'Synthesized by the authors. See text'
_chemical_formula_sum            'C28 H50 N2 O6'
_chemical_formula_weight         510.70
_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                 102.22(3)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.066(3)
_cell_length_b                   9.498(2)
_cell_length_c                   19.981(6)
_cell_measurement_reflns_used    25
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      30.00
_cell_measurement_theta_min      15.00
_cell_volume                     1681.6(9)
_computing_cell_refinement       'CAD4 Program (Nonius 1989)'
_computing_data_collection       'CAD4 Program (Nonius 1989)'
_computing_data_reduction        'Local Program'
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  'UdMX (local program)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full 0.951
_diffrn_measured_fraction_theta_max 0.951
_diffrn_measurement_device_type  Enraf-Nonius-CAD4
_diffrn_measurement_method       \w/2\q
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Sealed Tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.057
_diffrn_reflns_av_sigmaI/netI    0.1162
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            32281
_diffrn_reflns_theta_full        69.90
_diffrn_reflns_theta_max         69.90
_diffrn_reflns_theta_min         2.26
_diffrn_standards_decay_%        0.03
_diffrn_standards_interval_time  60
_diffrn_standards_number         5
_exptl_absorpt_coefficient_mu    0.561
_exptl_absorpt_correction_T_max  0.9600
_exptl_absorpt_correction_T_min  0.6700
_exptl_absorpt_correction_type   none
_exptl_absorpt_process_details   'No absorption correction applied'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.009
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             560
_exptl_crystal_size_max          0.78
_exptl_crystal_size_mid          0.27
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.200
_refine_diff_density_min         -0.145
_refine_diff_density_rms         0.046
_refine_ls_abs_structure_details 'Flack H D (1983), XXXX Friedel Pairs'
_refine_ls_abs_structure_Flack   -0.1(3)
_refine_ls_extinction_coef       0.0021(2)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   0.704
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     363
_refine_ls_number_reflns         5819
_refine_ls_number_restraints     71
_refine_ls_restrained_S_all      0.708
_refine_ls_R_factor_all          0.1180
_refine_ls_R_factor_gt           0.0525
_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^)+(0.0474P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1078
_refine_ls_wR_factor_ref         0.1262
_reflns_number_gt                2133
_reflns_number_total             5819
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            jo100017t_si_002.cif
_cod_data_source_block           han409
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from
2010-06-29.

'_geom_angle_publ_flag' value 'Y' changed to 'y'
according to the built-in table from CIF Core dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (65
times).

'_geom_bond_publ_flag' value 'Y' changed to 'y' according to
the built-in table from CIF Core dictionary named 'cif_core.dic'
version 2.4.1 from 2010-06-29 (47 times).

'_geom_torsion_publ_flag'
value 'Y' changed to 'y' according to the built-in table from CIF
Core dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29
(83 times).

Automatic conversion script
Id: cif_fix_values 1646 2011-03-28 12:23:43Z adriana 
;
_cod_original_cell_volume        1681.6(8)
_cod_database_code               4025384