Alisol B monoacetate from the rhizome of <i>Alisma orientale</i>
Yi-Ping Ye; Cui-Rong Sun; Xiao-Yu Li; Hong-Xiang Sun; Yuan-Jiang Pan; Acta Crystallographica Section E 59 (2003) o1858–o1859; doi:10.1107/S1600536803024620

data_2202829
_publ_section_title
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 Alisol B monoacetate from the rhizome of <i>Alisma orientale</i>
;
_journal_issue                   11
_journal_name_full               'Acta Crystallographica Section E'
_journal_page_first              o1858
_journal_page_last               o1859
_journal_paper_doi               10.1107/S1600536803024620
_journal_volume                  59
_journal_year                    2003
_chemical_formula_iupac          'C32 H50 O5'
_chemical_formula_moiety         'C32 H50 O5'
_chemical_formula_sum            'C32 H50 O5'
_chemical_formula_weight         514.72
_chemical_melting_point          444.0(10)
_chemical_name_common            'Alisol B monoacetate'
_chemical_name_systematic
;
11-hydroxy-24,25-epoxy-3-oxoprotost-13(17)-en-23-yl acetate
;
_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
_cell_angle_alpha                90.00
_cell_angle_beta                 90.00
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   7.7160(10)
_cell_length_b                   14.495(2)
_cell_length_c                   27.526(5)
_cell_measurement_reflns_used    35
_cell_measurement_temperature    296(2)
_cell_measurement_theta_max      14.91
_cell_measurement_theta_min      3.09
_cell_volume                     3078.6(8)
_computing_cell_refinement       XSCANS
_computing_data_collection       'XSCANS (Siemens, 1994)'
_computing_data_reduction        XSCANS
_computing_molecular_graphics    'XP in SHELXTL/PC (Siemens, 1991)'
_computing_publication_material  SHELXTL/PC
_computing_structure_refinement  'SHELXL97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS97 (Sheldrick, 1997)'
_diffrn_ambient_temperature      296(2)
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 1.000
_diffrn_measurement_device_type  'Siemens P4'
_diffrn_measurement_method       \w
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_reflns_av_R_equivalents  0.0096
_diffrn_reflns_av_sigmaI/netI    0.0528
_diffrn_reflns_limit_h_max       10
_diffrn_reflns_limit_h_min       0
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       0
_diffrn_reflns_limit_l_max       35
_diffrn_reflns_limit_l_min       -1
_diffrn_reflns_number            4120
_diffrn_reflns_theta_full        27.50
_diffrn_reflns_theta_max         27.50
_diffrn_reflns_theta_min         1.48
_diffrn_standards_decay_%        2.27
_diffrn_standards_interval_count 97
_diffrn_standards_number         3
_exptl_absorpt_coefficient_mu    0.073
_exptl_absorpt_correction_type   none
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.111
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       prisms
_exptl_crystal_F_000             1128
_exptl_crystal_size_max          0.56
_exptl_crystal_size_mid          0.56
_exptl_crystal_size_min          0.46
_refine_diff_density_max         0.110
_refine_diff_density_min         -0.104
_refine_ls_abs_structure_details 'see text'
_refine_ls_extinction_coef       0.0071(6)
_refine_ls_extinction_expression Fc^*^=kFc[1+0.001xFc^2^\l^3^/sin(2\q)]^-1/4^
_refine_ls_extinction_method     SHELXL97
_refine_ls_goodness_of_fit_ref   0.801
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     346
_refine_ls_number_reflns         3990
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      0.801
_refine_ls_R_factor_all          0.0870
_refine_ls_R_factor_gt           0.0373
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'calc w = 1/[\s^2^(Fo^2^)+(0.045P)^2^] where P = (Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0771
_refine_ls_wR_factor_ref         0.0862
_reflns_number_gt                1961
_reflns_number_total             3990
_reflns_threshold_expression     I>2\s(I)
_cod_data_source_file            ob6316.cif
_cod_data_source_block           I
_cod_depositor_comments
;
The following automatic conversions were performed:
'_symmetry_cell_setting' value 'Orthorhombic' changed to 'orthorhombic'
according to '/home/saulius/struct/CIF-dictionaries/cif_core.dic'
dictionary named 'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_enum 1527 2010-12-29 10:47:43Z saulius 

The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Orthorhombic' changed to
'orthorhombic' according to
/home/saulius/struct/CIF-dictionaries/cif_core.dic dictionary named
'cif_core.dic' version 2.4.1 from 2010-06-29.

Automatic conversion script
Id: cif_fix_values 1715 2011-07-08 13:25:40Z adriana 
;
_cod_database_code               2202829
_cod_database_fobs_code          2202829