A facile route to polysubstitutedN-benzyl pyroglutamates.
Sun, Pei-Pei; Chang, Meng-Yang; Chiang, Michael Y.; Chang, Nein-Chen; Organic letters 5 (2003) 1761–1763; doi:10.1021/ol0344164

data_1507299
_publ_section_title
;
 A facile route to polysubstitutedN-benzyl pyroglutamates.
;
_journal_issue                   10
_journal_name_full               'Organic letters'
_journal_page_first              1761
_journal_page_last               1763
_journal_paper_doi               10.1021/ol0344164
_journal_volume                  5
_journal_year                    2003
_chemical_formula_moiety         'C24 H29 N O7 S '
_chemical_formula_sum            'C24 H29 N O7 S'
_chemical_formula_weight         475.56
_chemical_melting_point          376
_chemical_name_systematic
; 
ethyl 1-benzyl-3-(dimethoxymethyl)-4-[(4-methylphenyl)sulfonyl]-5-oxo-2-pyrrolidinecarboxylate 
;
_space_group_IT_number           15
_symmetry_cell_setting           monoclinic
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_symmetry_space_group_name_Hall  '-C 2yc'
_symmetry_space_group_name_H-M   'C 1 2/c 1'
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_audit_creation_method           'by teXsan v1.8'
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?
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_cell_angle_alpha                90
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_cell_angle_gamma                90
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_cell_length_b                   8.335(3)
_cell_length_c                   33.036(4)
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_cell_measurement_temperature    298.2
_cell_measurement_theta_max      12.4
_cell_measurement_theta_min      9.2
_cell_volume                     4832(2)
_computing_cell_refinement       'MSC/AFC Diffractometer Control'
_computing_data_collection       'MSC/AFC Diffractometer Control'
_computing_data_reduction        'teXsan (MSC, 1992-1997)'
_computing_publication_material  'teXsan (MSC, 1992-1997)'
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_diffrn_measurement_method       \w-2\q
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\y scans (North,Phillips & Matthews, 1968)
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_exptl_crystal_colour            colorless
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_refine_ls_extinction_method     none
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_refine_ls_shift/su_max          0.0010
_refine_ls_shift/su_mean         0.0020
_refine_ls_structure_factor_coef F
_refine_ls_weighting_details     'w = 1/[\s^2^(Fo) + 0.00002|Fo|^2^]'
_refine_ls_weighting_scheme      sigma
_refine_ls_wR_factor_all         0.0484
_refine_ls_wR_factor_ref         0.0476
_reflns_number_gt                3365
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_reflns_threshold_expression     I>3.00\s(I)
_cod_data_source_file            ol0344164si20030402_022211.cif
_cod_data_source_block           organo14_(c63)_2/11/2001
_cod_depositor_comments
;
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_sg_symbol_H-M      'C 2/c      '
_cod_original_formula_sum        'C24 H29 N O7 S '
_cod_database_code               1507299