Mollanol A, a Diterpenoid with a New C-Nor-D-homograyanane Skeleton from the Fruits of Rhododendron molle.
Li, Yong; Liu, Yun-Bao; Liu, Yang-Lan; Wang, Chen; Wu, Lian-Qiu; Li, Li; Ma, Shuang-Gang; Qu, Jing; Yu, Shi-Shan; Organic letters 16 (2014) 4320–4323; doi:10.1021/ol5020653

data_1517505
_publ_section_title
;
 Mollanol A, a Diterpenoid with a New C-Nor-D-homograyanane Skeleton from
 the Fruits of Rhododendron molle.
;
_journal_issue                   16
_journal_name_full               'Organic letters'
_journal_page_first              4320
_journal_page_last               4323
_journal_paper_doi               10.1021/ol5020653
_journal_volume                  16
_journal_year                    2014
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C20 H30 O5, 4(H2 O)'
_chemical_formula_sum            'C20 H38 O9'
_chemical_formula_weight         422.50
_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                   6.8656(2)
_cell_length_b                   15.7655(5)
_cell_length_c                   20.081(2)
_cell_measurement_reflns_used    4781
_cell_measurement_temperature    99.8(2)
_cell_measurement_theta_max      71.7778
_cell_measurement_theta_min      4.3970
_cell_volume                     2173.6(2)
_computing_cell_refinement
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_data_collection
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_data_reduction
;
CrysAlisPro, Agilent Technologies,
Version 1.171.35.11 (release 16-05-2011 CrysAlis171 .NET)
(compiled May 16 2011,17:55:39)
;
_computing_molecular_graphics
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_publication_material
;
O. V. Dolomanov, L. J. Bourhis, R. J. Gildea, J. A. K. Howard and H. Puschmann,
OLEX2: a complete structure solution, refinement and analysis program.
J. Appl. Cryst. (2009). 42, 339-341.
;
_computing_structure_refinement  'SHELXL-97 (Sheldrick, 1997)'
_computing_structure_solution
'A short history of SHELX (Sheldrick, 2007)/Bruker'
_diffrn_ambient_temperature      99.8
_diffrn_measured_fraction_theta_full 0.987
_diffrn_measured_fraction_theta_max 0.987
_diffrn_measurement_device_type  'Xcalibur, Eos, Gemini'
_diffrn_measurement_method       '\w scans'
_diffrn_radiation_monochromator  graphite
_diffrn_radiation_source         'Enhance (Cu) X-ray Source'
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.5418
_diffrn_reflns_av_R_equivalents  0.0189
_diffrn_reflns_av_sigmaI/netI    0.0275
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       18
_diffrn_reflns_limit_k_min       -19
_diffrn_reflns_limit_l_max       21
_diffrn_reflns_limit_l_min       -24
_diffrn_reflns_number            7507
_diffrn_reflns_theta_full        72.17
_diffrn_reflns_theta_max         72.17
_diffrn_reflns_theta_min         4.40
_exptl_absorpt_coefficient_mu    0.839
_exptl_absorpt_correction_T_max  0.7578
_exptl_absorpt_correction_T_min  0.6791
_exptl_absorpt_correction_type   multi-scan
_exptl_crystal_density_diffrn    1.291
_exptl_crystal_density_method    'not measured'
_exptl_crystal_F_000             920
_exptl_crystal_size_max          0.50
_exptl_crystal_size_mid          0.40
_exptl_crystal_size_min          0.35
_refine_diff_density_max         0.333
_refine_diff_density_min         -0.310
_refine_diff_density_rms         0.052
_refine_ls_abs_structure_details 'Flack H D (1983), Acta Cryst. A39, 876-881'
_refine_ls_abs_structure_Flack   0.04(14)
_refine_ls_extinction_coef       0.0116(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   1.071
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     271
_refine_ls_number_reflns         4195
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.071
_refine_ls_R_factor_all          0.0390
_refine_ls_R_factor_gt           0.0382
_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^)+(0.0657P)^2^+0.5965P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1019
_refine_ls_wR_factor_ref         0.1028
_reflns_number_gt                4108
_reflns_number_total             4195
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            ol5020653_si_002.cif
_cod_data_source_block           exp_1883
_cod_original_cell_volume        2173.5(3)
_cod_database_code               1517505