Full stereochemical understanding in a new (2<i>R</i>,3<i>R</i>,4<i>R</i>)-4-hydroxyisoleucine synthesis
Rolland, Marc; Kassem, Tarek; Rolland, Valérie; Martinez, Jean; Acta Crystallographica Section C 57 (2001) 1415–1417; doi:10.1107/S0108270101014597

data_2012377
_publ_section_title
;
 Full stereochemical understanding in a new
 (2<i>R</i>,3<i>R</i>,4<i>R</i>)-4-hydroxyisoleucine synthesis
;
_journal_issue                   12
_journal_name_full               'Acta Crystallographica Section C'
_journal_page_first              1415
_journal_page_last               1417
_journal_paper_doi               10.1107/S0108270101014597
_journal_volume                  57
_journal_year                    2001
_chemical_formula_iupac          'C16 H21 N O3'
_chemical_formula_moiety         'C16 H21 N O3'
_chemical_formula_sum            'C16 H21 N O3'
_chemical_formula_weight         275.34
_chemical_name_systematic
;
2,3,5,6,7,8-Hexahydro-6,8-methano-7,7,8a-trimethyl-3-(1-methyl-2-
oxopropylidene)-5H-1,4-benzoxazin-2-one
;
_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
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   8.4160(3)
_cell_length_b                   12.3127(5)
_cell_length_c                   14.7039(4)
_cell_measurement_reflns_used    10878
_cell_measurement_temperature    293(2)
_cell_measurement_theta_max      26.44
_cell_measurement_theta_min      1.00
_cell_volume                     1523.67(9)
_computing_data_collection       'KappaCCD Reference Manual (Nonius, 1998)'
_computing_data_reduction        'DENZO and SCALEPAK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics    'ORTEPII (Johnson, 1976)'
_computing_publication_material  'MAXUS (Mackay et al., 1999)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      293(2)
_diffrn_measured_fraction_theta_full .980
_diffrn_measured_fraction_theta_max .980
_diffrn_measurement_device       'Nonius KappaCCD area-detector'
_diffrn_measurement_method       \f-scan
_diffrn_radiation_source         'X-ray tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     .71073
_diffrn_reflns_av_R_equivalents  .033
_diffrn_reflns_av_sigmaI/netI    .023
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            10878
_diffrn_reflns_theta_full        26.44
_diffrn_reflns_theta_max         26.44
_diffrn_reflns_theta_min         3.31
_exptl_absorpt_coefficient_mu    .082
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.200
_exptl_crystal_density_meas      ?
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             592
_exptl_crystal_size_max          .4
_exptl_crystal_size_mid          .3
_exptl_crystal_size_min          .2
_refine_diff_density_max         .13
_refine_diff_density_min         -.16
_refine_ls_goodness_of_fit_ref   1.058
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     181
_refine_ls_number_reflns         1775
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.058
_refine_ls_R_factor_all          .041
_refine_ls_R_factor_gt           .038
_refine_ls_shift/su_max          <0.001
_refine_ls_shift/su_mean         .000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.0551P)^2^+0.1091P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          .098
_refine_ls_wR_factor_ref         .100
_reflns_number_gt                1668
_reflns_number_total             1775
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            gd1165.cif
_cod_data_source_block           III
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 

The following automatic conversions were performed:

'_exptl_crystal_density_meas' value 'not measured' was changed to '?'
- the value is perceived as not measured.

Automatic conversion script
Id: cif_fix_values 3008 2015-01-20 13:52:24Z robertas 
;
_cod_original_cell_volume        1523.72(9)
_cod_original_sg_symbol_H-M      P212121
_cod_database_code               2012377
_cod_database_fobs_code          2012377