Keikipukalides, Furanocembrane Diterpenes from the Antarctic Deep Sea Octocoral Plumarella delicatissima
Thomas, Santana A. L.; von Salm, Jacqueline L.; Clark, Shane; Ferlita, Steve; Nemani, Prasanth; Azhari, Ala; Rice, Christopher A.; Wilson, Nerida G.; Kyle, Dennis E.; Baker, Bill J.; Journal of Natural Products  (2017) –; doi:10.1021/acs.jnatprod.7b00732

data_1548515
_publ_section_title
;
 Keikipukalides, Furanocembrane Diterpenes from the Antarctic Deep Sea
 Octocoral Plumarella delicatissima
;
_journal_name_full               'Journal of Natural Products'
_journal_paper_doi               10.1021/acs.jnatprod.7b00732
_journal_year                    2017
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C20 H20 O6'
_chemical_formula_sum            'C20 H20 O6'
_chemical_formula_weight         356.36
_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'
_symmetry_space_group_name_Hall  'P 2ac 2ab'
_symmetry_space_group_name_H-M   'P 21 21 21'
_atom_sites_solution_hydrogens   mixed
_audit_creation_date             2017-05-26
_audit_creation_method
;
Olex2 1.2
(compiled 2017.03.28 svn.r3405 for OlexSys, GUI svn.r5337)
;
_cell_angle_alpha                90
_cell_angle_beta                 90
_cell_angle_gamma                90
_cell_formula_units_Z            4
_cell_length_a                   6.74700(10)
_cell_length_b                   13.2449(3)
_cell_length_c                   18.8700(4)
_cell_measurement_reflns_used    9945
_cell_measurement_temperature    100(2)
_cell_measurement_theta_max      76.69
_cell_measurement_theta_min      4.08
_cell_volume                     1686.29(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  'XL (Sheldrick, 2008)'
_diffrn_ambient_temperature      100.0
_diffrn_measured_fraction_theta_full 1.000
_diffrn_measured_fraction_theta_max 0.996
_diffrn_measurement_device_type  'Bruker D8 Venture PHOTON 100 CMOS'
_diffrn_measurement_method       'omega scans'
_diffrn_radiation_monochromator  mirrors
_diffrn_radiation_type           CuK\a
_diffrn_radiation_wavelength     1.54178
_diffrn_reflns_av_R_equivalents  0.0710
_diffrn_reflns_av_unetI/netI     0.0356
_diffrn_reflns_Laue_measured_fraction_full 1.000
_diffrn_reflns_Laue_measured_fraction_max 0.996
_diffrn_reflns_limit_h_max       8
_diffrn_reflns_limit_h_min       -8
_diffrn_reflns_limit_k_max       16
_diffrn_reflns_limit_k_min       -15
_diffrn_reflns_limit_l_max       23
_diffrn_reflns_limit_l_min       -23
_diffrn_reflns_number            25739
_diffrn_reflns_point_group_measured_fraction_full 1.000
_diffrn_reflns_point_group_measured_fraction_max 0.992
_diffrn_reflns_theta_full        67.679
_diffrn_reflns_theta_max         77.219
_diffrn_reflns_theta_min         4.078
_diffrn_source                   'INCOATEC Imus micro-focus source'
_diffrn_standards_number         0
_exptl_absorpt_coefficient_mu    0.862
_exptl_absorpt_correction_T_max  1.0000
_exptl_absorpt_correction_T_min  0.8954
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details
;
SADABS-2016/2 (Bruker,2016/2) was used for absorption correction.
wR2(int) was 0.0948 before and 0.0782 after correction.
The Ratio of minimum to maximum transmission is 0.8954.
The \l/2 correction factor is Not present.
;
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.404
_exptl_crystal_description       plate
_exptl_crystal_F_000             752
_exptl_crystal_size_max          0.14
_exptl_crystal_size_mid          0.07
_exptl_crystal_size_min          0.02
_refine_diff_density_max         0.189
_refine_diff_density_min         -0.185
_refine_diff_density_rms         0.044
_refine_ls_abs_structure_details
;
 Flack x determined using 1220 quotients [(I+)-(I-)]/[(I+)+(I-)]
 (Parsons, Flack and Wagner, Acta Cryst. B69 (2013) 249-259).
;
_refine_ls_abs_structure_Flack   0.17(10)
_refine_ls_extinction_method     none
_refine_ls_goodness_of_fit_ref   1.048
_refine_ls_hydrogen_treatment    mixed
_refine_ls_matrix_type           full
_refine_ls_number_parameters     249
_refine_ls_number_reflns         3552
_refine_ls_number_restraints     0
_refine_ls_restrained_S_all      1.048
_refine_ls_R_factor_all          0.0433
_refine_ls_R_factor_gt           0.0352
_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^)+(0.0252P)^2^+0.6034P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.0698
_refine_ls_wR_factor_ref         0.0731
_reflns_Friedel_coverage         0.721
_reflns_Friedel_fraction_full    1.000
_reflns_Friedel_fraction_max     0.985
_reflns_number_gt                3185
_reflns_number_total             3552
_reflns_threshold_expression     'I > 2\s(I)'
_cod_data_source_file            np7b00732_si_002.cif
_cod_data_source_block           jax_f2_3
_cod_database_code               1548515
_shelx_shelxl_version_number     2014/7
_shelx_estimated_absorpt_t_max   0.983
_shelx_estimated_absorpt_t_min   0.889
_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:
 C9(H9), C19(H19), C20(H20), C25(H25)
2.b Secondary CH2 refined with riding coordinates:
 C8(H8A,H8B), C22(H22A,H22B)
2.c Aromatic/amide H refined with riding coordinates:
 C2(H2), C13(H13), C14(H14)
2.d Idealised Me refined as rotating group:
 C11(H11A,H11B,H11C), C26(H26A,H26B,H26C)
;
_shelx_res_checksum              38166
_shelx_hkl_checksum              95707
_olex2_submission_special_instructions 'No special instructions were received'