Cytotoxic Clerodane Diterpenoids from the Leaves of Casearia grewiifolia.
Nguyen, Ha T. T.; Truong, Ngan B.; Doan, Huong T. M.; Litaudon, Marc; Retailleau, Pascal; Do, Thao T.; Nguyen, Hung V.; Chau, Minh V.; Pham, Cuong V.; Journal of natural products 78 (2015) 2726–2730; doi:10.1021/acs.jnatprod.5b00677

data_1540465
_publ_section_title
;
 Cytotoxic Clerodane Diterpenoids from the Leaves of Casearia grewiifolia.
;
_journal_issue                   11
_journal_name_full               'Journal of natural products'
_journal_page_first              2726
_journal_page_last               2730
_journal_paper_doi               10.1021/acs.jnatprod.5b00677
_journal_volume                  78
_journal_year                    2015
_chemical_formula_sum            'C28 H40 O8'
_chemical_formula_weight         504.60
_space_group_IT_number           96
_symmetry_cell_setting           tetragonal
_symmetry_space_group_name_Hall  'P 4nw 2abw'
_symmetry_space_group_name_H-M   'P 43 21 2'
_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            8
_cell_length_a                   10.5228(3)
_cell_length_b                   10.5228(3)
_cell_length_c                   52.456(4)
_cell_measurement_temperature    193(2)
_cell_volume                     5808.4(5)
_computing_cell_refinement       'CrystalClear-SM Expert 2.0 r4 (Rigaku, 2009)'
_computing_data_collection       'CrystalClear-SM Expert 2.0 r4 (Rigaku, 2009)'
_computing_data_reduction        'CrystalClear-SM Expert 2.0 r4 (Rigaku, 2009)'
_computing_molecular_graphics    'PLATON (Spek, 2003)'
_computing_publication_material  'SHELXL97 (Sheldrick, 2008)'
_computing_structure_refinement
'SHELXL97 (Sheldrick, 2008); CRYSTALBUILDER (Welter, 2006)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 2008)'
_diffrn_ambient_temperature      193(2)
_diffrn_detector_type
'RAPID II large area curved imaging plate detector '
_diffrn_measured_fraction_theta_full 0.997
_diffrn_measured_fraction_theta_max 0.997
_diffrn_measurement_device_type  'Rigaku rapid II RAXIS conversion'
_diffrn_measurement_method       'profile data from \w-scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54187
_diffrn_reflns_av_R_equivalents  0.0339
_diffrn_reflns_av_sigmaI/netI    0.0286
_diffrn_reflns_limit_h_max       12
_diffrn_reflns_limit_h_min       -10
_diffrn_reflns_limit_k_max       11
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       52
_diffrn_reflns_limit_l_min       -63
_diffrn_reflns_number            26822
_diffrn_reflns_theta_full        68.25
_diffrn_reflns_theta_max         68.25
_diffrn_reflns_theta_min         3.37
_exptl_absorpt_coefficient_mu    0.685
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'FS_ABSCOR (Rigaku, 2009)'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.154
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prism
_exptl_crystal_F_000             2176
_exptl_crystal_size_max          0.10
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.315
_refine_diff_density_min         -0.200
_refine_diff_density_rms         0.047
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.1(4)
_refine_ls_extinction_coef       0.0021(3)
_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   1.133
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     368
_refine_ls_number_reflns         5306
_refine_ls_number_restraints     15
_refine_ls_restrained_S_all      1.141
_refine_ls_R_factor_all          0.0912
_refine_ls_R_factor_gt           0.0633
_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^)+(0.0991P)^2^+1.6978P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1699
_refine_ls_wR_factor_ref         0.2145
_reflns_number_gt                3681
_reflns_number_total             5306
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            np5b00677_si_002.cif
_cod_data_source_block           330
_cod_depositor_comments
'Adding full bibliography for 1540465--1540466.cif.'
_cod_database_code               1540465