Synthesis and Scalable Conversion of l-Iduronamides to Heparin-Related Di- and Tetrasaccharides
Steen U. Hansen; Gavin J. Miller; Marek Baráth; Karl R. Broberg; Egle Avizienyte; Madeleine Helliwell; James Raftery; Gordon C. Jayson; John M. Gardiner; Journal of Organic Chemistry 77 (2012) 7823–7843; doi:10.1021/jo300722y

data_4027478
_publ_contact_author_address
; 
Department of Chemistry 
University of Manchester 
Manchester M13 9PL 
England  UK 
;
_publ_contact_author_email       jrtest@spec.ch.man.ac.uk
_publ_contact_author_fax         44(161)275-4734
_publ_contact_author_name        'Raftery, James'
_publ_contact_author_phone       44(161)275-4700
_publ_section_title
;
 Synthesis and Scalable Conversion of l-Iduronamides to Heparin-Related
 Di- and Tetrasaccharides
;
_journal_name_full               'Journal of Organic Chemistry'
_journal_page_first              7823
_journal_page_last               7843
_journal_paper_doi               10.1021/jo300722y
_journal_volume                  77
_journal_year                    2012
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C17 H21 N O8, 0.5(C4 H8 O2)'
_chemical_formula_sum            'C19 H25 N O9'
_chemical_formula_weight         411.40
_space_group_IT_number           18
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2 2ab'
_symmetry_space_group_name_H-M   'P 21 21 2'
_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                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   21.575(14)
_cell_length_b                   8.693(5)
_cell_length_c                   10.727(6)
_cell_measurement_reflns_used    1034
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      24.9696
_cell_measurement_theta_min      1.8840
_cell_volume                     2012(2)
_computing_cell_refinement       'Bruker FRAMBO'
_computing_data_collection       'Bruker FRAMBO'
_computing_data_reduction        'Bruker SAINT'
_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      100(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Bruker SMART APEX CCD diffractometer'
_diffrn_measurement_method       'phi and omega scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Mo) x-ray Source'
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.7107
_diffrn_reflns_av_R_equivalents  0.1317
_diffrn_reflns_av_sigmaI/netI    0.1110
_diffrn_reflns_limit_h_max       23
_diffrn_reflns_limit_h_min       -23
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            12566
_diffrn_reflns_theta_full        23.26
_diffrn_reflns_theta_max         23.26
_diffrn_reflns_theta_min         1.89
_exptl_absorpt_coefficient_mu    0.109
_exptl_absorpt_correction_T_max  1.00000
_exptl_absorpt_correction_T_min  0.25339
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
CrysAlisPro, Oxford Diffraction Ltd.,
Version 1.171.34.44 (release 25-10-2010 CrysAlis171 .NET)
(compiled Oct 25 2010,18:11:34)
empirical absorption correction using spherical harmonics,
 implemented in SCALE3 ABSPACK scaling algorithm.
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.358
_exptl_crystal_description       needle
_exptl_crystal_F_000             872
_exptl_crystal_size_max          0.90
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.05
_refine_diff_density_max         0.324
_refine_diff_density_min         -0.400
_refine_diff_density_rms         0.071
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.017
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     292
_refine_ls_number_reflns         2895
_refine_ls_number_restraints     56
_refine_ls_restrained_S_all      1.022
_refine_ls_R_factor_all          0.1130
_refine_ls_R_factor_gt           0.0714
_refine_ls_shift/su_max          0.003
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0815P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1576
_refine_ls_wR_factor_ref         0.1881
_reflns_number_gt                1918
_reflns_number_total             2895
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            jo300722y_si_003.cif
_cod_data_source_block           s3582bsm2-18
_cod_original_sg_symbol_Hall     P22ab
_cod_database_code               4027478