Nitroso-dienophile additions to dendralenes: a short synthesis of branched aminosugars.
Wang, Ruomeng; Bojase, Gomotsang; Willis, Anthony C.; Paddon-Row, Michael N; Sherburn, Michael S.; Organic letters 14 (2012) 5652–5655; doi:10.1021/ol302619r

data_1508733
_publ_section_title
;
 Nitroso-dienophile additions to dendralenes: a short synthesis of
 branched aminosugars.
;
_journal_issue                   22
_journal_name_full               'Organic letters'
_journal_page_first              5652
_journal_page_last               5655
_journal_paper_doi               10.1021/ol302619r
_journal_volume                  14
_journal_year                    2012
_chemical_absolute_configuration unk
_chemical_compound_source        local
_chemical_formula_moiety         'C26 H25 N3 O3'
_chemical_formula_sum            'C26 H25 N3 O3'
_chemical_formula_weight         427.50
_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
_audit_creation_date             08-08-04
_audit_creation_method           CRYSTALS_ver_12.85
_audit_update_record
;
2008-08-04 - Report on C26 H25 N3 O3
             by Anthony C. Willis
             for BJ and Mick Sherburn
2008-08-04 - passes checkcif tests with minor warnings
;
_cell_angle_alpha                90
_cell_angle_beta                 97.0025(10)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   15.6734(4)
_cell_length_b                   6.1300(1)
_cell_length_c                   22.7367(5)
_cell_measurement_reflns_used    125043
_cell_measurement_temperature    200
_cell_measurement_theta_max      25
_cell_measurement_theta_min      2.6
_cell_volume                     2168.20(8)
_computing_cell_refinement       'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_data_collection       'COLLECT (Nonius, 1997-2001).'
_computing_data_reduction        'DENZO/SCALEPACK (Otwinowski & Minor, 1997)'
_computing_molecular_graphics
; 
ORTEP-II (Johnson 1976) in teXsan (MSC, 1992-1997)
;
_computing_publication_material  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_refinement  'CRYSTALS (Betteridge et al., 2003)'
_computing_structure_solution    'SIR92 (Altomare et al., 1994)'
_diffrn_ambient_temperature      200
_diffrn_measured_fraction_theta_full 0.993
_diffrn_measured_fraction_theta_max 0.993
_diffrn_measurement_device       'Nonius KappaCCD'
_diffrn_measurement_device_type  Area
_diffrn_measurement_method       ' \f and \w scans with CCD '
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           'Mo K\a'
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.062
_diffrn_reflns_limit_h_max       18
_diffrn_reflns_limit_h_min       -18
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -6
_diffrn_reflns_limit_l_max       27
_diffrn_reflns_limit_l_min       -27
_diffrn_reflns_number            32473
_diffrn_reflns_theta_full        25.101
_diffrn_reflns_theta_max         25.101
_diffrn_reflns_theta_min         2.619
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.087
_exptl_absorpt_correction_T_max  0.993
_exptl_absorpt_correction_T_min  0.971
_exptl_absorpt_correction_type   integration
_exptl_absorpt_process_details
;
via Gaussian method (Coppens, 1970) implemented in maXus (2000)
;
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.310
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             904
_exptl_crystal_size_max          0.45
_exptl_crystal_size_mid          0.20
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.24
_refine_diff_density_min         -0.24
_refine_ls_extinction_method     None
_refine_ls_goodness_of_fit_ref   0.8192
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     577
_refine_ls_number_reflns         4229
_refine_ls_number_restraints     1
_refine_ls_R_factor_all          0.0521
_refine_ls_R_factor_gt           0.0321
_refine_ls_shift/su_max          0.000598
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
;
 Method= Modified Sheldrick 
 w=1/[\s^2^(F^2^) + ( 0.01P)^2^ + 0.00P] 
 ,where P=(max(Fo^2^,0) + 2Fc^2^)/3 
;
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_all         0.0682
_refine_ls_wR_factor_gt          0.0639
_refine_ls_wR_factor_ref         0.0682
_reflns_limit_h_max              18
_reflns_limit_h_min              -18
_reflns_limit_k_max              7
_reflns_limit_k_min              0
_reflns_limit_l_max              27
_reflns_limit_l_min              0
_reflns_number_gt                3107
_reflns_number_total             4231
_reflns_threshold_expression     I>2.0\s(I)
_oxford_diffrn_Wilson_B_factor   3.29
_oxford_diffrn_Wilson_scale      2.54
_oxford_refine_ls_r_factor_ref   0.0521
_oxford_refine_ls_scale          0.6618(10)
_oxford_reflns_number_all        4229
_oxford_reflns_threshold_expression_ref I>-10.0\s(I)
_oxford_structure_analysis_title '8041244 she0825a'
_cod_data_source_file            ol302619r_si_002.cif
_cod_data_source_block           she0825a
_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.

Automatic conversion script
Id: cif_fix_values 1891 2012-01-12 08:04:46Z andrius 
;
_cod_original_sg_symbol_H-M      'P 1 21 1 '
_cod_database_code               1508733