Uncommon Polyoxygenated Sesquiterpenoids from South China Sea Soft Coral Lemnalia flava.
Wu, Qihao; Ye, Fei; Li, Xiao-Lu; Liang, Lin-Fu; Sun, Jiadong; Sun, Han; Guo, Yue-Wei; Wang, Hong; The Journal of organic chemistry 84 (2019) 3083–3092; doi:10.1021/acs.joc.8b02912

data_4033900
_publ_section_title
;
 Uncommon Polyoxygenated Sesquiterpenoids from South China Sea Soft Coral
 Lemnalia flava.
;
_journal_issue                   6
_journal_name_full               'The Journal of organic chemistry'
_journal_page_first              3083
_journal_page_last               3092
_journal_paper_doi               10.1021/acs.joc.8b02912
_journal_volume                  84
_journal_year                    2019
_chemical_absolute_configuration rmad
_chemical_formula_moiety         'C15 H22 O3'
_chemical_formula_sum            'C15 H22 O3'
_chemical_formula_weight         250.32
_space_group_crystal_system      orthorhombic
_space_group_IT_number           19
_space_group_name_Hall           'P 2ac 2ab'
_space_group_name_H-M_alt        'P 21 21 21'
_atom_sites_solution_hydrogens   geom
_atom_sites_solution_primary     dual
_audit_creation_date             2017-09-21
_audit_creation_method
;
Olex2 1.2
(compiled 2017.08.10 svn.r3458 for OlexSys, GUI svn.r5381)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   9.0771(2)
_cell_length_b                   10.5122(3)
_cell_length_c                   14.5700(4)
_cell_measurement_reflns_used    9915
_cell_measurement_temperature    303(2)
_cell_measurement_theta_max      54.816
_cell_measurement_theta_min      4.513
_cell_volume                     1390.27(6)
_computing_cell_refinement       'SAINT v8.37A (Bruker, 2015)'
_computing_data_reduction        'SAINT v8.37A (Bruker, 2015)'
_computing_molecular_graphics    'Olex2 (Dolomanov et al., 2009)'
_computing_publication_material  'Olex2 (Dolomanov et al., 2009)'
_computing_structure_refinement  'ShelXL (Sheldrick, 2015)'
_computing_structure_solution    'ShelXT (Sheldrick, 2015)'
_diffrn_ambient_temperature      303.38
_diffrn_measured_fraction_theta_full 0.996
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker D8 Venture'
_diffrn_measurement_method       '\f and \w scans'
_diffrn_radiation_type           GaK\a
_diffrn_radiation_wavelength     1.34139
_diffrn_reflns_av_R_equivalents  0.0354
_diffrn_reflns_av_unetI/netI     0.0219
_diffrn_reflns_Laue_measured_fraction_full 0.996
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -9
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -12
_diffrn_reflns_limit_l_max       17
_diffrn_reflns_limit_l_min       -17
_diffrn_reflns_number            15489
_diffrn_reflns_point_group_measured_fraction_full 0.996
_diffrn_reflns_point_group_measured_fraction_max 0.996
_diffrn_reflns_theta_full        53.594
_diffrn_reflns_theta_max         54.890
_diffrn_reflns_theta_min         4.512
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.421
_exptl_absorpt_correction_T_max  0.7508
_exptl_absorpt_correction_T_min  0.6043
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
'SADABS-2016/2 (Bruker,2016/2) was used for absorption correction. wR2(int) was 0.1393 before and 0.0543 after correction. The Ratio of minimum to maximum transmission is 0.8049. The \l/2 correction factor is Not present.'
_exptl_crystal_colour            colourless
_exptl_crystal_density_diffrn    1.196
_exptl_crystal_description       block
_exptl_crystal_F_000             544
_exptl_crystal_size_max          0.2
_exptl_crystal_size_mid          0.18
_exptl_crystal_size_min          0.15
_refine_diff_density_max         0.099
_refine_diff_density_min         -0.114
_refine_diff_density_rms         0.028
_refine_ls_abs_structure_details
;
 Flack x determined using 941 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.05(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.072
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     166
_refine_ls_number_reflns         2627
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.072
_refine_ls_R_factor_all          0.0385
_refine_ls_R_factor_gt           0.0344
_refine_ls_shift/su_max          0.000
_refine_ls_shift/su_mean         0.000
_refine_ls_structure_factor_coef Fsqd
_refine_ls_weighting_details
'w=1/[\s^2^(Fo^2^)+(0.0459P)^2^+0.0998P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0838
_refine_ls_wR_factor_ref         0.0866
_reflns_Friedel_coverage         0.725
_reflns_Friedel_fraction_full    0.995
_reflns_Friedel_fraction_max     0.995
_reflns_number_gt                2405
_reflns_number_total             2627
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            jo8b02912_si_002.cif
_cod_data_source_block           mjr17043_0m
_cod_database_code               4033900
_shelx_shelxl_version_number     2016/6
_shelx_estimated_absorpt_t_max   0.940
_shelx_estimated_absorpt_t_min   0.921
_olex2_refinement_description
;
1. Fixed Uiso
 At 1.2 times of:
  All C(H) groups, All C(H,H) groups
 At 1.5 times of:
  All C(H,H,H) groups
2.a Ternary CH refined with riding coordinates:
 C4(H4), C7(H7)
2.b Secondary CH2 refined with riding coordinates:
 C2(H2A,H2B), C3(H3A,H3B), C8(H8A,H8B), C10(H10A,H10B), C11(H11A,H11B)
2.c Aromatic/amide H refined with riding coordinates:
 C1(H1)
2.d Idealised Me refined as rotating group:
 C13(H13A,H13B,H13C), C14(H14A,H14B,H14C), C15(H15A,H15B,H15C)
;
_shelx_res_checksum              20906
_shelx_hkl_checksum              61161
_olex2_submission_special_instructions 'No special instructions were received'