Rhodomollanol A, a Highly Oxygenated Diterpenoid with a 5/7/5/5 Tetracyclic Carbon Skeleton from the Leaves of Rhododendron molle.
Zhou, Junfei; Zhan, Guanqun; Zhang, Hanqi; Zhang, Qihua; Li, Ying; Xue, Yongbo; Yao, Guangmin; Organic letters 19 (2017) 3935–3938; doi:10.1021/acs.orglett.7b01863

data_1546527
_publ_section_title
;
 Rhodomollanol A, a Highly Oxygenated Diterpenoid with a 5/7/5/5
 Tetracyclic Carbon Skeleton from the Leaves of Rhododendron molle.
;
_journal_issue                   14
_journal_name_full               'Organic letters'
_journal_page_first              3935
_journal_page_last               3938
_journal_paper_doi               10.1021/acs.orglett.7b01863
_journal_volume                  19
_journal_year                    2017
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C20 H28 O5, 2(H2 O), 0.5O'
_chemical_formula_sum            'C20 H32 O7.5'
_chemical_formula_weight         392.46
_chemical_name_systematic
; 
 ? 
;
_space_group_IT_number           5
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'C 2y'
_symmetry_space_group_name_H-M   'C 1 2 1'
_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                 94.433(2)
_cell_angle_gamma                90.00
_cell_formula_units_Z            4
_cell_length_a                   39.283(5)
_cell_length_b                   7.0114(9)
_cell_length_c                   7.3524(9)
_cell_measurement_reflns_used    8602
_cell_measurement_temperature    297(2)
_cell_measurement_theta_max      70.53
_cell_measurement_theta_min      4.52
_cell_volume                     2019.0(4)
_computing_cell_refinement       'Bruker SAINT'
_computing_data_collection       'Bruker APEX2'
_computing_data_reduction        'Bruker SAINT'
_computing_molecular_graphics    'Bruker SHELXTL'
_computing_publication_material  'Bruker SHELXTL'
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution    'SHELXS-97 (Sheldrick, 1990)'
_diffrn_ambient_temperature      297(2)
_diffrn_measured_fraction_theta_full 0.973
_diffrn_measured_fraction_theta_max 0.973
_diffrn_measurement_device_type  'Bruker APEX-II CCD'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'fine-focus sealed tube'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.1058
_diffrn_reflns_av_sigmaI/netI    0.0679
_diffrn_reflns_limit_h_max       45
_diffrn_reflns_limit_h_min       -43
_diffrn_reflns_limit_k_max       7
_diffrn_reflns_limit_k_min       -8
_diffrn_reflns_limit_l_max       8
_diffrn_reflns_limit_l_min       -8
_diffrn_reflns_number            10122
_diffrn_reflns_theta_full        68.95
_diffrn_reflns_theta_max         68.95
_diffrn_reflns_theta_min         6.04
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.812
_exptl_absorpt_correction_T_max  0.922
_exptl_absorpt_correction_T_min  0.907
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Sheldrick,2008'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.291
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             848
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.1
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.707
_refine_diff_density_min         -0.346
_refine_diff_density_rms         0.079
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   -0.04(19)
_refine_ls_extinction_coef       0.0040(6)
_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   1.013
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     258
_refine_ls_number_reflns         3421
_refine_ls_number_restraints     7
_refine_ls_restrained_S_all      1.018
_refine_ls_R_factor_all          0.0639
_refine_ls_R_factor_gt           0.0602
_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^)+(0.1273P)^2^+0.8494P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1627
_refine_ls_wR_factor_ref         0.1640
_reflns_number_gt                3355
_reflns_number_total             3421
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol7b01863_si_002.cif
_cod_data_source_block           cu_161129b_0m
_cod_depositor_comments
;
The following automatic conversions were performed:

'_symmetry_cell_setting' value 'Monoclinic' changed to 'monoclinic'
according to
/home/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 4973 2017-02-22 13:04:09Z antanas 

 Adding full bibliography for 1546527.cif.
;
_cod_original_sg_symbol_Hall     'C 2y '
_cod_original_sg_symbol_H-M      'C 2'
_cod_original_formula_sum        'C20 H32 O7.50'
_cod_database_code               1546527
_shelx_estimated_absorpt_t_min   0.649
_shelx_estimated_absorpt_t_max   0.754