Synthesis of a Small-Molecule Library with Skeletal Diversity from Hemslecin A via the Reaction-Discovery Strategy.
Ren, Jian; Shi, Xin; Li, Xiao-Nian; Li, Lai-Wei; Su, Jia; Shao, Li-Dong; Zhao, Qin-Shi; Organic letters 18 (2016) 3948–3951; doi:10.1021/acs.orglett.6b01654

data_1555624
_publ_section_title
;
 Synthesis of a Small-Molecule Library with Skeletal Diversity from
 Hemslecin A via the Reaction-Discovery Strategy.
;
_journal_issue                   16
_journal_name_full               'Organic letters'
_journal_page_first              3948
_journal_page_last               3951
_journal_paper_doi               10.1021/acs.orglett.6b01654
_journal_volume                  18
_journal_year                    2016
_chemical_formula_moiety         'C26 H34 O4'
_chemical_formula_sum            'C26 H34 O4'
_chemical_formula_weight         410.53
_space_group_crystal_system      monoclinic
_space_group_IT_number           4
_space_group_name_Hall           'P 2yb'
_space_group_name_H-M_alt        'P 1 21 1'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary   difmap
_audit_creation_method           SHELXL-2014/7
_cell_angle_alpha                90
_cell_angle_beta                 90.656(2)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.4038(10)
_cell_length_b                   23.797(3)
_cell_length_c                   9.9633(11)
_cell_measurement_reflns_used    9541
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      30.45
_cell_measurement_theta_min      2.22
_cell_volume                     2229.5(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-2014 (Sheldrick 2014)'
_computing_structure_solution    'SHELXS-97 (Sheldrick 2008)'
_diffrn_ambient_temperature      100(2)
_diffrn_measured_fraction_theta_full 0.998
_diffrn_measured_fraction_theta_max 0.930
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0285
_diffrn_reflns_av_unetI/netI     0.0469
_diffrn_reflns_Laue_measured_fraction_full 0.998
_diffrn_reflns_Laue_measured_fraction_max 0.930
_diffrn_reflns_limit_h_max       13
_diffrn_reflns_limit_h_min       -13
_diffrn_reflns_limit_k_max       32
_diffrn_reflns_limit_k_min       -34
_diffrn_reflns_limit_l_max       14
_diffrn_reflns_limit_l_min       -14
_diffrn_reflns_number            24850
_diffrn_reflns_point_group_measured_fraction_full 0.990
_diffrn_reflns_point_group_measured_fraction_max 0.882
_diffrn_reflns_theta_full        25.242
_diffrn_reflns_theta_max         30.994
_diffrn_reflns_theta_min         1.711
_diffrn_source                   'fine-focus sealed tube'
_exptl_absorpt_coefficient_mu    0.081
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.223
_exptl_crystal_description       prism
_exptl_crystal_F_000             888
_exptl_crystal_size_max          1.700
_exptl_crystal_size_mid          0.210
_exptl_crystal_size_min          0.120
_exptl_transmission_factor_max   0.7462
_exptl_transmission_factor_min   0.6957
_refine_diff_density_max         0.317
_refine_diff_density_min         -0.192
_refine_diff_density_rms         0.047
_refine_ls_abs_structure_details
;
 Flack x determined using 4846 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.0(3)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.028
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     553
_refine_ls_number_reflns         12536
_refine_ls_number_restraints     1
_refine_ls_restrained_S_all      1.028
_refine_ls_R_factor_all          0.0441
_refine_ls_R_factor_gt           0.0394
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0533P)^2^+0.2218P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0963
_refine_ls_wR_factor_ref         0.0992
_reflns_Friedel_coverage         0.856
_reflns_Friedel_fraction_full    0.982
_reflns_Friedel_fraction_max     0.832
_reflns_number_gt                11562
_reflns_number_total             12536
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            ol6b01654_si_005.cif
_cod_data_source_block           mo_frj221_0m
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               1555624
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_min   0.875
_shelx_estimated_absorpt_t_max   0.990
_shelx_res_checksum              2484
_shelx_hkl_checksum              90581