Galanthamine, Plicamine, and Secoplicamine Alkaloids from Zephyranthes candida and Their Anti-acetylcholinesterase and Anti-inflammatory Activities.
Zhan, Guanqun; Zhou, Junfei; Liu, Rong; Liu, Tingting; Guo, Guoli; Wang, Jianping; Xiang, Ming; Xue, Yongbo; Luo, Zengwei; Zhang, Yonghui; Yao, Guangmin; Journal of natural products 79 (2016) 760–766; doi:10.1021/acs.jnatprod.5b00681

data_1542564
_publ_section_title
;
 Galanthamine, Plicamine, and Secoplicamine Alkaloids from Zephyranthes
 candida and Their Anti-acetylcholinesterase and Anti-inflammatory
 Activities.
;
_journal_issue                   4
_journal_name_full               'Journal of natural products'
_journal_page_first              760
_journal_page_last               766
_journal_paper_doi               10.1021/acs.jnatprod.5b00681
_journal_volume                  79
_journal_year                    2016
_chemical_absolute_configuration ad
_chemical_formula_moiety         'C23 H30.01 N2 O4'
_chemical_formula_sum            'C23 H30.01 N2 O4'
_chemical_formula_weight         398.49
_chemical_name_systematic
;
 ?
;
_space_group_IT_number           4
_symmetry_cell_setting           monoclinic
_symmetry_space_group_name_Hall  'P 2yb'
_symmetry_space_group_name_H-M   'P 1 21 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                 95.2470(10)
_cell_angle_gamma                90.00
_cell_formula_units_Z            2
_cell_length_a                   9.4965(2)
_cell_length_b                   11.4906(3)
_cell_length_c                   9.9133(3)
_cell_measurement_reflns_used    2811
_cell_measurement_temperature    298(2)
_cell_measurement_theta_max      66.24
_cell_measurement_theta_min      3.23
_cell_volume                     1077.21(5)
_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      298(2)
_diffrn_measured_fraction_theta_full 0.969
_diffrn_measured_fraction_theta_max 0.969
_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  0.0315
_diffrn_reflns_av_sigmaI/netI    0.0282
_diffrn_reflns_limit_h_max       11
_diffrn_reflns_limit_h_min       -11
_diffrn_reflns_limit_k_max       12
_diffrn_reflns_limit_k_min       -11
_diffrn_reflns_limit_l_max       11
_diffrn_reflns_limit_l_min       -11
_diffrn_reflns_number            18180
_diffrn_reflns_theta_full        67.23
_diffrn_reflns_theta_max         67.23
_diffrn_reflns_theta_min         4.48
_exptl_absorpt_coefficient_mu    0.678
_exptl_absorpt_correction_T_max  0.9353
_exptl_absorpt_correction_T_min  0.9052
_exptl_absorpt_correction_type   multi-scan
_exptl_absorpt_process_details   'SADABS, Sheldrick,2008'
_exptl_crystal_colour            colorless
_exptl_crystal_density_diffrn    1.229
_exptl_crystal_density_method    'not measured'
_exptl_crystal_description       block
_exptl_crystal_F_000             428
_exptl_crystal_size_max          0.15
_exptl_crystal_size_mid          0.10
_exptl_crystal_size_min          0.10
_refine_diff_density_max         0.255
_refine_diff_density_min         -0.153
_refine_diff_density_rms         0.030
_refine_ls_abs_structure_details
;
Flack H D (1983), Acta Cryst. A39, 876-881;
Flack  parameter = -0.1(3), 1577 Friedel pairs.
Hooft <i>et al.</i> (2010) and Spek (2009);
Hooft parameter = -0.08(7),  1576 Bijvoet pairs.
;
_refine_ls_extinction_coef       0.0058(11)
_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   1.069
_refine_ls_hydrogen_treatment    constr
_refine_ls_matrix_type           full
_refine_ls_number_parameters     292
_refine_ls_number_reflns         3545
_refine_ls_number_restraints     73
_refine_ls_restrained_S_all      1.129
_refine_ls_R_factor_all          0.0441
_refine_ls_R_factor_gt           0.0424
_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^)+(0.0749P)^2^+0.0843P] where P=(Fo^2^+2Fc^2^)/3'
_refine_ls_weighting_scheme      calc
_refine_ls_wR_factor_gt          0.1192
_refine_ls_wR_factor_ref         0.1216
_reflns_number_gt                3367
_reflns_number_total             3545
_reflns_threshold_expression     >2sigma(I)
_cod_data_source_file            np5b00681_si_005.cif
_cod_data_source_block           cu_131126e_0m
_cod_depositor_comments
'Adding full bibliography for 1542562--1542566.cif.'
_cod_original_sg_symbol_Hall     'P 2yb '
_cod_original_sg_symbol_H-M      'P 21'
_cod_database_code               1542564