A Catalytic Enantioselective Tandem Allylation Strategy for Rapid Terpene Construction: Application to the Synthesis of Pumilaside Aglycon
Grace E. Ferris; Kai Hong; Ian A. Roundtree; James P. Morken; Journal of the American Chemical Society 135 (2013) 2501–2504; doi:10.1021/ja400506j

data_4119384
_publ_section_title
;
 A Catalytic Enantioselective Tandem Allylation Strategy for Rapid Terpene
 Construction: Application to the Synthesis of Pumilaside Aglycon
;
_journal_name_full               'Journal of the American Chemical Society'
_journal_page_first              2501
_journal_page_last               2504
_journal_paper_doi               10.1021/ja400506j
_journal_volume                  135
_journal_year                    2013
_chemical_absolute_configuration syn
_chemical_formula_moiety         'C19 H26 O2'
_chemical_formula_sum            'C19 H26 O2'
_chemical_formula_weight         286.40
_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                 106.762(4)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   14.6441(14)
_cell_length_b                   6.9021(7)
_cell_length_c                   16.9049(16)
_cell_measurement_reflns_used    9975
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      66.71
_cell_measurement_theta_min      2.73
_cell_volume                     1636.1(3)
_computing_cell_refinement       'SAINT (Bruker, 2010)'
_computing_data_collection       'APEX2 (Bruker, 2010)'
_computing_data_reduction        'SAINT (Bruker, 2010)'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 2008)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.978
_diffrn_measured_fraction_theta_max 0.978
_diffrn_measurement_device_type  'Bruker Kappa DUO CCD diffractometer'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0422
_diffrn_reflns_av_sigmaI/netI    0.0409
_diffrn_reflns_limit_h_max       17
_diffrn_reflns_limit_h_min       -17
_diffrn_reflns_limit_k_max       8
_diffrn_reflns_limit_k_min       -4
_diffrn_reflns_limit_l_max       20
_diffrn_reflns_limit_l_min       -20
_diffrn_reflns_number            14863
_diffrn_reflns_theta_full        67.34
_diffrn_reflns_theta_max         67.34
_diffrn_reflns_theta_min         2.73
_diffrn_source                   'microfocus sealed tube'
_diffrn_source_type              'Incoatec I\uS'
_exptl_absorpt_coefficient_mu    0.570
_exptl_absorpt_correction_T_max  0.9775
_exptl_absorpt_correction_T_min  0.9347
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
Sheldrick, G.M. (2008). SADABS v2008/1. Bruker AXS Inc. Madison, WI USA.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.163
_exptl_crystal_density_method    none
_exptl_crystal_description       block
_exptl_crystal_F_000             624
_exptl_crystal_size_max          0.12
_exptl_crystal_size_mid          0.08
_exptl_crystal_size_min          0.04
_refine_diff_density_max         0.175
_refine_diff_density_min         -0.225
_refine_diff_density_rms         0.041
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.34(18)
_refine_ls_extinction_coef       na
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.027
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     415
_refine_ls_number_reflns         3901
_refine_ls_number_restraints     11
_refine_ls_restrained_S_all      1.027
_refine_ls_R_factor_all          0.0347
_refine_ls_R_factor_gt           0.0337
_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^)+(0.0535P)^2^+0.3299P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0878
_refine_ls_wR_factor_ref         0.0888
_reflns_number_gt                3796
_reflns_number_total             3901
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ja400506j_si_005.cif
_cod_data_source_block           C19H26O2
_cod_database_code               4119384