Absolute Configurations and Bioactivities of Guaiane-Type Sesquiterpenoids Isolated from Pogostemon cablin.
Zhou, Qin-Mei; Chen, Ming-Hua; Li, Xiao-Hong; Peng, Cheng; Lin, Da-Sheng; Li, Xiao-Nian; He, Yang; Xiong, Liang; Journal of natural products 81 (2018) 1919–1927; doi:10.1021/acs.jnatprod.7b00690

data_1553315
_publ_section_title
;
 Absolute Configurations and Bioactivities of Guaiane-Type
 Sesquiterpenoids Isolated from Pogostemon cablin.
;
_journal_issue                   9
_journal_name_full               'Journal of natural products'
_journal_page_first              1919
_journal_page_last               1927
_journal_paper_doi               10.1021/acs.jnatprod.7b00690
_journal_volume                  81
_journal_year                    2018
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C15 H26 O2'
_chemical_formula_sum            'C15 H26 O2'
_chemical_formula_weight         238.36
_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
_audit_creation_method           SHELXL-2016/6
_cell_angle_alpha                90
_cell_angle_beta                 119.71(3)
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   10.280(2)
_cell_length_b                   15.493(3)
_cell_length_c                   10.270(2)
_cell_measurement_reflns_used    9612
_cell_measurement_temperature    104(2)
_cell_measurement_theta_max      74.92
_cell_measurement_theta_min      4.96
_cell_volume                     1420.7(6)
_computing_structure_refinement  'SHELXL-2016/6 (Sheldrick, 2016)'
_diffrn_ambient_temperature      104(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.999
_diffrn_measurement_device_type  'BRUKER D8 VENTURE PHOTON II'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54184
_diffrn_reflns_av_R_equivalents  0.0622
_diffrn_reflns_av_unetI/netI     0.0598
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.999
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -17
_diffrn_reflns_limit_l_max       12
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            14544
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.995
_diffrn_reflns_theta_full        66.595
_diffrn_reflns_theta_max         66.595
_diffrn_reflns_theta_min         2.852
_exptl_absorpt_coefficient_mu    0.556
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   sadabs
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.114
_exptl_crystal_description       plate
_exptl_crystal_F_000             528
_exptl_crystal_size_max          0.100
_exptl_crystal_size_mid          0.050
_exptl_crystal_size_min          0.020
_exptl_transmission_factor_max   0.6683
_exptl_transmission_factor_min   0.3865
_refine_diff_density_max         0.221
_refine_diff_density_min         -0.274
_refine_diff_density_rms         0.049
_refine_ls_abs_structure_details
;
 Flack x determined using 1586 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.02(17)
_refine_ls_extinction_coef       0.0032(11)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     'SHELXL-2016/6 (Sheldrick 2016)'
_refine_ls_goodness_of_fit_ref   1.086
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     330
_refine_ls_number_reflns         4783
_refine_ls_number_restraints     46
_refine_ls_restrained_S_all      1.689
_refine_ls_R_factor_all          0.0780
_refine_ls_R_factor_gt           0.0681
_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^)+(0.0819P)^2^+0.8545P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1732
_refine_ls_wR_factor_ref         0.1853
_reflns_Friedel_coverage         0.912
_reflns_Friedel_fraction_full    0.992
_reflns_Friedel_fraction_max     0.990
_reflns_number_gt                4247
_reflns_number_total             4783
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            np7b00690_si_002.cif
_cod_data_source_block           p21_a_compound_2
_cod_original_cell_volume        1420.6(6)
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               1553315
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_min   0.947
_shelx_estimated_absorpt_t_max   0.989
_shelx_res_checksum              76502
_shelx_hkl_checksum              6624