Stereoselective synthesis of 2-acetamido-1,2-dideoxynojirimycin (DNJNAc) and ureido-DNJNAc derivatives as new hexosaminidase inhibitors.
de la Fuente, Alex; Mena-Barragán, Teresa; Farrar-Tobar, Ronald A; Verdaguer, Xavier; García Fernández, José M; Ortiz Mellet, Carmen; Riera, Antoni; Organic & biomolecular chemistry 13 (2015) 6500–6510; doi:10.1039/c5ob00507h

data_7154426
_publ_section_title
;
 Stereoselective synthesis of 2-acetamido-1,2-dideoxynojirimycin (DNJNAc)
 and ureido-DNJNAc derivatives as new hexosaminidase inhibitors.
;
_journal_issue                   23
_journal_name_full               'Organic &amp; biomolecular chemistry'
_journal_page_first              6500
_journal_page_last               6510
_journal_paper_doi               10.1039/c5ob00507h
_journal_volume                  13
_journal_year                    2015
_chemical_absolute_configuration ad
_chemical_formula_sum            'C14 H16 N4 O4'
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_space_group_name_Hall           'P 2ac 2ab'
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
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_atom_sites_solution_hydrogens   mixed
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;
2015-03-12 deposited with the CCDC.
2015-04-28 downloaded from the CCDC.
;
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_cell_measurement_temperature    100(2)
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_computing_cell_refinement       'Bruker APEX2 v2011.4-0'
_computing_data_collection       'Bruker APEX2 v2011.4-0'
_computing_data_reduction        'Bruker SAINT V7.60A'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick, 2014)'
_computing_structure_solution    Sir2011
_diffrn_ambient_temperature      100(2)
_diffrn_detector_area_resol_mean 512
_diffrn_detector_type            '4K CCD area detector APEX II'
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.959
_diffrn_measurement_device_type  'APEX DUO Kappa 4-axis goniometer'
_diffrn_measurement_method
;
 Fullsphere data collection, phi and omega scans
;
_diffrn_measurement_specimen_support 'magnetic support with MicroMount'
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_diffrn_reflns_av_unetI/netI     0.0743
_diffrn_reflns_Laue_measured_fraction_full 0.997
_diffrn_reflns_Laue_measured_fraction_max 0.959
_diffrn_reflns_limit_h_max       13
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_diffrn_reflns_limit_k_min       -14
_diffrn_reflns_limit_l_max       19
_diffrn_reflns_limit_l_min       -22
_diffrn_reflns_number            9047
_diffrn_reflns_point_group_measured_fraction_full 0.995
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_diffrn_source_size              '0.2 mm x 0.2 mm fine focus'
_diffrn_source_type              'Bruker APEX DUO'
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_exptl_absorpt_correction_type   empirical
_exptl_absorpt_process_details
; 
 SADABS Version 2008/1 Bruker-Nonius
 Blessing, Acta Cryst. (1995) A51 33-38
;
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.383
_exptl_crystal_description       block
_exptl_crystal_F_000             640
_exptl_crystal_size_max          0.03
_exptl_crystal_size_mid          0.02
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.423
_refine_diff_density_min         -0.354
_refine_diff_density_rms         0.073
_refine_ls_abs_structure_details
;
 Flack x determined using 1604 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.6(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.143
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     199
_refine_ls_number_reflns         4568
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.143
_refine_ls_R_factor_all          0.0617
_refine_ls_R_factor_gt           0.0576
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0835P)^2^+0.0375P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1555
_refine_ls_wR_factor_ref         0.1614
_reflns_Friedel_coverage         0.718
_reflns_Friedel_fraction_full    0.992
_reflns_Friedel_fraction_max     0.898
_reflns_number_gt                4142
_reflns_number_total             4568
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            c5ob00507h2.cif
_cod_data_source_block           mo_AFC561_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/RSC/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3271 2015-04-21 07:52:19Z andrius 

 Adding full bibliography for 7154425--7154426.cif.
;
_cod_original_sg_symbol_H-M      P2(1)2(1)2(1)
_cod_database_code               7154426
_shelx_estimated_absorpt_t_min   0.997
_shelx_estimated_absorpt_t_max   0.998
_shelxl_version_number           2014-3
_shelx_res_checksum              18025