An enantioselective total synthesis of (+)-aigialospirol.
Figueroa, Ruth; Hsung, Richard P.; Guevarra, Christle C.; Organic letters 9 (2007) 4857–4859; doi:10.1021/ol702195w

data_1505605
_publ_section_title
;
 An enantioselective total synthesis of (+)-aigialospirol.
;
_journal_issue                   23
_journal_name_full               'Organic letters'
_journal_page_first              4857
_journal_page_last               4859
_journal_paper_doi               10.1021/ol702195w
_journal_volume                  9
_journal_year                    2007
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C27 H36 O5 Si'
_chemical_formula_sum            'C27 H36 O5 Si'
_chemical_formula_weight         468.65
_chemical_name_common            06222
_space_group_IT_number           96
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4nw 2abw'
_symmetry_space_group_name_H-M   'P 43 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            8
_cell_length_a                   9.59210(10)
_cell_length_b                   9.59210(10)
_cell_length_c                   55.2591(14)
_cell_measurement_reflns_used    3570
_cell_measurement_temperature    123(2)
_cell_measurement_theta_max      25.02
_cell_measurement_theta_min      2.81
_cell_volume                     5084.30(15)
_computing_cell_refinement       'SAINT, Bruker'
_computing_data_collection       'SMART, Bruker'
_computing_data_reduction        'SAINT, Bruker'
_computing_molecular_graphics    'SHELXTL, Bruker'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      123(2)
_diffrn_measured_fraction_theta_full 0.986
_diffrn_measured_fraction_theta_max 0.986
_diffrn_measurement_device_type  'Bruker SMART Platform CCD'
_diffrn_measurement_method       'area detector, omega scans per phi'
_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  0.0330
_diffrn_reflns_av_sigmaI/netI    0.0170
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       9
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       63
_diffrn_reflns_limit_l_min       -63
_diffrn_reflns_number            45513
_diffrn_reflns_theta_full        25.05
_diffrn_reflns_theta_max         25.05
_diffrn_reflns_theta_min         1.47
_exptl_absorpt_coefficient_mu    0.127
_exptl_absorpt_correction_T_max  0.9812
_exptl_absorpt_correction_T_min  0.9690
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, R. Blessing, 1995'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.224
_exptl_crystal_density_meas      0
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             2016
_exptl_crystal_size_max          0.25
_exptl_crystal_size_mid          0.25
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.271
_refine_diff_density_min         -0.254
_refine_diff_density_rms         0.044
_refine_ls_abs_structure_details
'Flack H D (1983), 1749 Fridel Pairs, Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(16)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.033
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     302
_refine_ls_number_reflns         4472
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.033
_refine_ls_R_factor_all          0.0418
_refine_ls_R_factor_gt           0.0400
_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^)+(0.0325P)^2^+5.5340P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0951
_refine_ls_wR_factor_ref         0.0960
_reflns_number_gt                4312
_reflns_number_total             4472
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol702195w-file003.cif
_cod_data_source_block           06222
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Tetragonal' changed to 'tetragonal'
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      P4(3)2(1)2
_cod_database_code               1505605