Novel bicyclization reaction leading to a fused beta-lactone.
Reddy, Leleti Rajender; Corey, E. J.; Organic letters 8 (2006) 1717–1719; doi:10.1021/ol060464n

data_1505942
_publ_section_title
;
 Novel bicyclization reaction leading to a fused beta-lactone.
;
_journal_issue                   8
_journal_name_full               'Organic letters'
_journal_page_first              1717
_journal_page_last               1719
_journal_paper_doi               10.1021/ol060464n
_journal_volume                  8
_journal_year                    2006
_chemical_formula_sum            'C24 H27 N O6'
_chemical_formula_weight         425.47
_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   difmap
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-97
_cell_angle_alpha                90.00
_cell_angle_beta                 102.016(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   7.4379(10)
_cell_length_b                   11.1077(14)
_cell_length_c                   13.6905(17)
_cell_measurement_temperature    293(2)
_cell_volume                     1106.3(2)
_computing_cell_refinement       'SMART (BRUKER, V5.054, 1998)'
_computing_data_collection       'ASTRO (BRUKER, V5.007, 1997)'
_computing_data_reduction        'SAINT (BRUKER, V6.01, 1999)'
_computing_molecular_graphics    'SHELXTL (BRUKER, 1998, V5.1)'
_computing_publication_material  'XCIF (Sheldrick and BRUKER, 1997, V5.1)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      293(2)
_diffrn_detector_area_resol_mean 836.6
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker CCD'
_diffrn_measurement_method       '\w, 0.3 deg'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'normal-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0233
_diffrn_reflns_av_sigmaI/netI    0.0241
_diffrn_reflns_limit_h_max       9
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -13
_diffrn_reflns_limit_l_max       7
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            7060
_diffrn_reflns_theta_full        27.89
_diffrn_reflns_theta_max         27.89
_diffrn_reflns_theta_min         2.38
_diffrn_standards_decay_%        <1
_diffrn_standards_interval_count 0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.092
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.277
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       needle
_exptl_crystal_F_000             452
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.08
_refine_diff_density_max         0.217
_refine_diff_density_min         -0.141
_refine_diff_density_rms         0.032
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.2(8)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.065
_refine_ls_hydrogen_treatment    refined
_refine_ls_matrix_type           full
_refine_ls_number_parameters     388
_refine_ls_number_reflns         4852
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.065
_refine_ls_R_factor_all          0.0425
_refine_ls_R_factor_gt           0.0393
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0505P)^2^+0.1720P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0957
_refine_ls_wR_factor_ref         0.0977
_reflns_number_gt                4557
_reflns_number_total             4852
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol060464nsi20060222_032733.cif
_cod_data_source_block           ejc55t
_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 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P2(1)
_cod_database_code               1505942