Bioactive myrsinol diterpenoids from the roots of Euphorbia prolifera.
Xu, Jing; Guo, Yuanqiang; Xie, Chunfeng; Li, Yushan; Gao, Jie; Zhang, Tiejun; Hou, Wenbin; Fang, Lingzhi; Gui, Liping; Journal of natural products 74 (2011) 2224–2230; doi:10.1021/np200591h

data_1501838
_publ_section_title
;
 Bioactive myrsinol diterpenoids from the roots of Euphorbia prolifera.
;
_journal_issue                   10
_journal_name_full               'Journal of natural products'
_journal_page_first              2224
_journal_page_last               2230
_journal_paper_doi               10.1021/np200591h
_journal_volume                  74
_journal_year                    2011
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C39 H56 O15'
_chemical_formula_sum            'C39 H56 O15'
_chemical_formula_weight         764.84
_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                   10.2388(5)
_cell_length_b                   12.9739(8)
_cell_length_c                   30.5211(16)
_cell_measurement_reflns_used    5122
_cell_measurement_temperature    113(2)
_cell_measurement_theta_max      72.40
_cell_measurement_theta_min      27.60
_cell_volume                     4054.3(4)
_computing_cell_refinement       'CrystalClear-SM Expert 2.0 r5'
_computing_data_collection       'CrystalClear-SM Expert 2.0 r5 (Rigaku, 2010)'
_computing_data_reduction        'CrystalClear-SM Expert 2.0 r5'
_computing_molecular_graphics    'CrystalStructure 4.0'
_computing_publication_material  'CrystalStructure 4.0 (Rigaku, 2009)'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      113(2)
_diffrn_detector_area_resol_mean 11.11
_diffrn_measured_fraction_theta_full 0.988
_diffrn_measured_fraction_theta_max 0.988
_diffrn_measurement_device_type  'Rigaku Saturn944 CCD'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  multilayer
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.0600
_diffrn_reflns_av_sigmaI/netI    0.0442
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -12
_diffrn_reflns_limit_k_max       14
_diffrn_reflns_limit_k_min       -16
_diffrn_reflns_limit_l_max       37
_diffrn_reflns_limit_l_min       -34
_diffrn_reflns_number            34134
_diffrn_reflns_theta_full        72.65
_diffrn_reflns_theta_max         72.65
_diffrn_reflns_theta_min         2.90
_diffrn_standards_decay_%        0
_diffrn_standards_interval_count 0
_diffrn_standards_interval_time  0
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.799
_exptl_absorpt_correction_T_max  0.9243
_exptl_absorpt_correction_T_min  0.8827
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   CrystalClear
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.253
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             1640
_exptl_crystal_size_max          0.16
_exptl_crystal_size_mid          0.14
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.369
_refine_diff_density_min         -0.530
_refine_diff_density_rms         0.112
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.01(11)
_refine_ls_extinction_coef       0.0113(4)
_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   1.113
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     501
_refine_ls_number_reflns         7899
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.113
_refine_ls_R_factor_all          0.0520
_refine_ls_R_factor_gt           0.0503
_refine_ls_shift/su_max          0.001
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w=1/[\s^2^(Fo^2^)+(0.0757P)^2^+0.0000P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1106
_refine_ls_wR_factor_ref         0.1132
_reflns_number_gt                7519
_reflns_number_total             7899
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            np200591h_si_002.cif
_cod_data_source_block           shelxl
_cod_database_code               1501838