Total synthesis and structural confirmation of (+)-longicin.
Hanessian, Stephen; Giroux, Simon; Buffat, Maxime; Organic letters 7 (2005) 3989–3992; doi:10.1021/ol051483k

data_1506683
_publ_section_title
;
 Total synthesis and structural confirmation of (+)-longicin.
;
_journal_issue                   18
_journal_name_full               'Organic letters'
_journal_page_first              3989
_journal_page_last               3992
_journal_paper_doi               10.1021/ol051483k
_journal_volume                  7
_journal_year                    2005
_chemical_compound_source        'Synthesized by the authors. See text'
_chemical_formula_sum            'C19 H36 O3'
_chemical_formula_weight         312.48
_space_group_IT_number           19
_symmetry_cell_setting           orthorhombic
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_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                   5.1980(2)
_cell_length_b                   7.6164(2)
_cell_length_c                   48.4186(16)
_cell_measurement_reflns_used    6538
_cell_measurement_temperature    220(2)
_cell_measurement_theta_max      72.67
_cell_measurement_theta_min      3.65
_cell_volume                     1916.89(11)
_computing_cell_refinement       'SMART (Bruker, 1999)'
_computing_data_collection       'SMART (Bruker, 1999)'
_computing_data_reduction        'SAINT (Bruker, 1999)'
_computing_molecular_graphics    'SHELXTL (Bruker, 1997)'
_computing_publication_material  'UdMX (local program)'
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      220(2)
_diffrn_detector_area_resol_mean 5.5
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Bruker AXS Smart 2K/Platform'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Sealed Tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.080
_diffrn_reflns_av_sigmaI/netI    0.0646
_diffrn_reflns_limit_h_max       6
_diffrn_reflns_limit_h_min       -6
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -9
_diffrn_reflns_limit_l_max       59
_diffrn_reflns_limit_l_min       -59
_diffrn_reflns_number            15724
_diffrn_reflns_theta_full        72.92
_diffrn_reflns_theta_max         72.92
_diffrn_reflns_theta_min         1.82
_diffrn_standards_decay_%        -0.04
_diffrn_standards_number         167
_exptl_absorpt_coefficient_mu    0.552
_exptl_absorpt_correction_T_max  0.9900
_exptl_absorpt_correction_T_min  0.1400
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'Sadabs (Sheldrick,1996)'
_exptl_crystal_colour            Colourless
_exptl_crystal_density_diffrn    1.083
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       plate
_exptl_crystal_F_000             696
_exptl_crystal_size_max          0.73
_exptl_crystal_size_mid          0.53
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.409
_refine_diff_density_min         -0.333
_refine_diff_density_rms         0.083
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.1(7)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.044
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     201
_refine_ls_number_reflns         3805
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.044
_refine_ls_R_factor_all          0.1315
_refine_ls_R_factor_gt           0.1064
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.2000P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.2888
_refine_ls_wR_factor_ref         0.3094
_reflns_number_gt                2469
_reflns_number_total             3805
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ol051483ksi20050624_034134.cif
_cod_data_source_block           han370
_cod_depositor_comments
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The following automatic conversions were performed:
'_atom_site_symetry_multiplicity' tag replaced with
'_atom_site_symmetry_multiplicity'.

Automatic conversion script
Id: cif_correct_tags 1440 2010-10-19 06:21:57Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

'_geom_bond_publ_flag'
value 'Y' changed to 'y' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29 (22
times).

'_geom_angle_publ_flag' value 'Y' changed to 'y' according
to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29 (25
times).

'_geom_torsion_publ_flag' value 'Y' changed to 'y' according
to /home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary
named 'cif_core.dic' version 2.4.1 from 2010-06-29 (27 times).

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_original_sg_symbol_H-M      P212121
_cod_database_code               1506683