Dimeric Abietane Diterpenoids and Sesquiterpenoid Lactones from Teucrium viscidum.
Gao, Chun; Han, Li; Zheng, Dan; Jin, Hongwei; Gai, Chunyan; Wang, Jianbin; Zhang, Hao; Zhang, Liangren; Fu, Hongzheng; Journal of natural products 78 (2015) 630–638; doi:10.1021/np500746n

data_1518775
_publ_section_title
;
 Dimeric Abietane Diterpenoids and Sesquiterpenoid Lactones from Teucrium
 viscidum.
;
_journal_issue                   4
_journal_name_full               'Journal of natural products'
_journal_page_first              630
_journal_page_last               638
_journal_paper_doi               10.1021/np500746n
_journal_volume                  78
_journal_year                    2015
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C20 H28 O4'
_chemical_formula_sum            'C20 H28 O4'
_chemical_formula_weight         332.42
_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                   10.734(7)
_cell_length_b                   12.344(4)
_cell_length_c                   13.282(5)
_cell_measurement_temperature    295(2)
_cell_volume                     1759.9(14)
_computing_cell_refinement       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_collection       'CrystalClear (Rigaku Inc., 2008)'
_computing_data_reduction        'CrystalClear (Rigaku Inc., 2008)'
_computing_molecular_graphics    ORTEPII(Johnson,1976)andPLUTON(Spek,1990)
_computing_publication_material  'SHELXL97(Sheldrick, 1997)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      295(2)
_diffrn_detector_area_resol_mean 0
_diffrn_measured_fraction_theta_full 0.980
_diffrn_measured_fraction_theta_max 0.981
_diffrn_measurement_device_type  'MicroMax 002+'
_diffrn_measurement_method       \f\k
_diffrn_radiation_monochromator  confocal
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0509
_diffrn_reflns_av_sigmaI/netI    0.0280
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -5
_diffrn_reflns_limit_k_max       15
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       15
_diffrn_reflns_limit_l_min       -16
_diffrn_reflns_number            27220
_diffrn_reflns_theta_full        72.23
_diffrn_reflns_theta_max         72.23
_diffrn_reflns_theta_min         4.89
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.689
_exptl_absorpt_correction_T_max  0.7422
_exptl_absorpt_correction_T_min  0.6706
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_colour            yellow
_exptl_crystal_density_diffrn    1.255
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             720
_exptl_crystal_size_max          0.63
_exptl_crystal_size_mid          0.50
_exptl_crystal_size_min          0.46
_refine_diff_density_max         0.230
_refine_diff_density_min         -0.126
_refine_diff_density_rms         0.033
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.06(15)
_refine_ls_extinction_coef       0.0118(8)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL
_refine_ls_goodness_of_fit_ref   1.056
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     225
_refine_ls_number_reflns         3406
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.056
_refine_ls_R_factor_all          0.0325
_refine_ls_R_factor_gt           0.0319
_refine_ls_shift/su_max          0.015
_refine_ls_shift/su_mean         0.003
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0570P)^2^+0.1038P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0856
_refine_ls_wR_factor_ref         0.0862
_reflns_number_gt                3331
_reflns_number_total             3406
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            np500746n_si_002.cif
_cod_data_source_block           5643
_cod_depositor_comments
;
The following automatic conversions were performed:

'_exptl_absorpt_correction_type' value 'Multi-scan' changed to
'multi-scan' according to
/usr/data/users/saulius/crontab/automatic-downloads/rss-feeds/ACS/lib/dictionaries/cif_core.dic
dictionary named 'cif_core.dic' version 2.4.2 from 2011-04-26.

Automatic conversion script
Id: cif_fix_values 3086 2015-02-26 13:12:21Z robertas 

 Adding full bibliography for 1518774--1518775.cif.
;
_cod_original_sg_symbol_H-M      P212121
_cod_database_code               1518775