##############################################################################
###                                                                        ###
###        Electronic paper (Acta Crystallographica Section E)             ###
###                                                                        ###
##############################################################################
#                                                                            #
# This CIF contains the data in a paper accepted for publication in Acta     #
# Crystallographica Section E. It conforms to the requirements of Notes      #
# for Authors for Section E, and has been peer reviewed under the auspices   #
# of the IUCr Commission on Journals.                                        #
#                                                                            #
# Full details of the Crystallographic Information File format               #
# are given in the paper "The Crystallographic Information File (CIF):       #
# a New Standard Archive File for Crystallography" by S. R. Hall, F. H.      #
# Allen and I. D. Brown [Acta Cryst. (1991), A47, 655-685].                  #
#                                                                            #
# The current version of the core CIF dictionary is obtainable from          #
# ftp://ftp.iucr.org/pub/cif_core.dic. The current version number is 2.1.    #
#                                                                            #
# Software is freely available for graphical display of the structure(s) in  #
# this CIF.  For information consult the CIF home page http://www.iucr.org/  #
# cif/home.html                                                              #
#                                                                            #
#            Copyright International Union of Crystallography                #
#                                                                            #
##############################################################################
                                             
data_I
_audit_creation_method     SHELXL97
_chemical_name_systematic
;
1α-hydroxy-6β,7β-diacetoxy-8,13-epoxylabd-14-en-11-one
;
_chemical_name_common     'Forskolin G'
_chemical_formula_moiety     'C24 H36 O7'
_chemical_formula_sum     'C24 H36 O7'
_chemical_formula_iupac     'C24 H36 O7'
_chemical_formula_weight     436.53
_chemical_melting_point     ?
_symmetry_cell_setting     monoclinic
_symmetry_space_group_name_H-M     'P 21'
_symmetry_space_group_name_Hall     'P 2yb'
loop_
    _symmetry_equiv_pos_as_xyz
    'x, y, z'
    '-x, y+1/2, -z'
_cell_length_a     9.839(3)
_cell_length_b     11.981(4)
_cell_length_c     10.908(4)
_cell_angle_alpha     90.00
_cell_angle_beta     114.982(4)
_cell_angle_gamma     90.00
_cell_volume     1165.5(7)
_cell_formula_units_Z     2
_cell_measurement_reflns_used     2946
_cell_measurement_theta_min     2.284
_cell_measurement_theta_max     28.322
_cell_measurement_temperature     298(2)
_exptl_crystal_description     prism
_exptl_crystal_colour     colourless
_exptl_crystal_size_max     0.48
_exptl_crystal_size_mid     0.45
_exptl_crystal_size_min     0.40
_exptl_crystal_density_diffrn     1.244
_exptl_crystal_density_meas     ?
_exptl_crystal_density_method     'not measured'
_exptl_crystal_F_000     472
_exptl_absorpt_coefficient_mu     0.090
_exptl_absorpt_correction_type     multi-scan
_exptl_absorpt_process_details     '(SADABS; Bruker, 2000)'
_exptl_absorpt_correction_T_min     0.9580
_exptl_absorpt_correction_T_max     0.9648
_exptl_special_details
;
IR (KBr, νₘₐₓ, cm⁻¹): 3444, 2954, 1734, 1238 and 1035.
;
_diffrn_ambient_temperature     298(2)
_diffrn_radiation_type     MoK\a
_diffrn_radiation_wavelength     0.71073
_diffrn_radiation_source     'fine-focus sealed tube'
_diffrn_radiation_monochromator     graphite
_diffrn_measurement_device_type     'Bruker SMART CCD area-detector'
_diffrn_measurement_method     'φ and ω'
_diffrn_detector_area_resol_mean     ?
_diffrn_reflns_number     6139
_diffrn_reflns_av_R_equivalents     0.0249
_diffrn_reflns_av_sigmaI/netI     0.0250
_diffrn_reflns_theta_min     2.06
_diffrn_reflns_theta_max     25.01
_diffrn_reflns_theta_full     25.01
_diffrn_measured_fraction_theta_max     0.999
_diffrn_measured_fraction_theta_full     0.999
_diffrn_reflns_limit_h_min     -11
_diffrn_reflns_limit_h_max     11
_diffrn_reflns_limit_k_min     -14
_diffrn_reflns_limit_k_max     13
_diffrn_reflns_limit_l_min     -12
_diffrn_reflns_limit_l_max     9
_diffrn_standards_number     0
_diffrn_standards_interval_count     0
_diffrn_standards_interval_time     0
_diffrn_standards_decay_%     0
_refine_special_details
;
 Refinement of F² against ALL reflections.  The weighted R-factor wR and
 goodness of fit S are based on F², conventional R-factors R are based
 on F, with F set to zero for negative F². The threshold expression of
 F² > 2sigma(F²) is used only for calculating R-factors(gt) etc. and is
 not relevant to the choice of reflections for refinement.  R-factors based
 on F² are statistically about twice as large as those based on F, and R-
 factors based on ALL data will be even larger.
;
_reflns_number_total     2168
_reflns_number_gt     1884
_reflns_threshold_expression     I>2σ(I)
_refine_ls_structure_factor_coef     Fsqd
_refine_ls_matrix_type     full
_refine_ls_R_factor_all     0.0439
_refine_ls_R_factor_gt     0.0350
_refine_ls_wR_factor_gt     0.0849
_refine_ls_wR_factor_ref     0.0930
_refine_ls_goodness_of_fit_ref     0.999
_refine_ls_restrained_S_all     0.999
_refine_ls_number_reflns     2168
_refine_ls_number_parameters     287
_refine_ls_number_restraints     1
_refine_ls_hydrogen_treatment     constr
_refine_ls_weighting_scheme     calc
_refine_ls_weighting_details
         'calc w = 1/[σ²(Fo²)+(0.051P)²+0.222P] where P=(Fo²+2Fc²)/3'
_atom_sites_solution_hydrogens     geom
_atom_sites_solution_primary     direct
_atom_sites_solution_secondary     difmap
_refine_ls_shift/su_max     0.016
_refine_ls_shift/su_mean     0.000
_refine_diff_density_max     0.171
_refine_diff_density_min     -0.154
_refine_ls_extinction_method     none
_refine_ls_extinction_coef     ?
_refine_ls_abs_structure_details     'Flack (1983), with no Friedel pairs'
_refine_ls_abs_structure_Flack     -10(10)
loop_
    _atom_type_symbol
    _atom_type_description
    _atom_type_scat_dispersion_real
    _atom_type_scat_dispersion_imag
    _atom_type_scat_source
    'C' 'C' 0.0033 0.0000
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'H' 'H' 0.0000 0.0000
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
    'O' 'O' 0.0106 0.0000
                         'International Tables Vol C Tables 4.2.6.8 and 6.1.1.4'
_computing_data_collection     'SMART (Bruker, 2000)'
_computing_cell_refinement     'SMART'
_computing_data_reduction     'SAINT'
_computing_structure_solution     'SHELXS97 (Sheldrick, 1997)'
_computing_structure_refinement     'SHELXL97 (Sheldrick, 1997)'
_computing_molecular_graphics     'SHELXTL (Bruker, 2000)'
_computing_publication_material     'SHELXTL'
loop_
    _atom_site_type_symbol
    _atom_site_label
    _atom_site_fract_x
    _atom_site_fract_y
    _atom_site_fract_z
    _atom_site_U_iso_or_equiv
    _atom_site_adp_type
    _atom_site_calc_flag
    _atom_site_refinement_flags
    _atom_site_occupancy
    _atom_site_disorder_assembly
    _atom_site_disorder_group
    O O1 0.7072(2) 0.6729(2) 0.5857(2) 0.0549(6) Uani d . 1 . .
    H H1B 0.7862 0.6749 0.5773 0.082 Uiso calc R 1 . .
    O O2 0.20973(18) 0.79428(17) 0.61815(19) 0.0383(4) Uani d . 1 . .
    O O3 -0.0112(2) 0.7053(2) 0.5518(2) 0.0591(6) Uani d . 1 . .
    O O4 0.2637(2) 0.64237(18) 0.81966(19) 0.0429(5) Uani d . 1 . .
    O O5 0.2023(3) 0.4652(2) 0.7561(3) 0.0817(9) Uani d . 1 . .
    O O6 0.5783(2) 0.6281(2) 0.9591(2) 0.0496(5) Uani d . 1 . .
    O O7 0.8311(3) 0.8470(3) 0.8518(2) 0.0749(8) Uani d . 1 . .
    C C1 0.6447(3) 0.7834(3) 0.5693(3) 0.0436(7) Uani d . 1 . .
    H H1A 0.7261 0.8365 0.6159 0.052 Uiso calc R 1 . .
    C C2 0.5705(3) 0.8135(3) 0.4200(3) 0.0507(8) Uani d . 1 . .
    H H2A 0.6438 0.8084 0.3825 0.061 Uiso calc R 1 . .
    H H2B 0.5352 0.8900 0.4102 0.061 Uiso calc R 1 . .
    C C3 0.4395(3) 0.7369(3) 0.3417(3) 0.0468(7) Uani d . 1 . .
    H H3A 0.4767 0.6613 0.3465 0.056 Uiso calc R 1 . .
    H H3B 0.3954 0.7592 0.2474 0.056 Uiso calc R 1 . .
    C C4 0.3167(3) 0.7378(3) 0.3944(3) 0.0407(6) Uani d . 1 . .
    C C5 0.3959(3) 0.7122(2) 0.5500(2) 0.0326(6) Uani d . 1 . .
    H H5 0.4404 0.6384 0.5535 0.039 Uiso calc R 1 . .
    C C6 0.2871(3) 0.6918(2) 0.6156(3) 0.0346(6) Uani d . 1 . .
    H H6 0.2122 0.6369 0.5607 0.042 Uiso calc R 1 . .
    C C7 0.3677(3) 0.6457(3) 0.7577(3) 0.0365(6) Uani d . 1 . .
    H H7 0.3981 0.5689 0.7509 0.044 Uiso calc R 1 . .
    C C8 0.5072(3) 0.7100(3) 0.8537(3) 0.0381(6) Uani d . 1 . .
    C C9 0.6092(3) 0.7302(2) 0.7789(3) 0.0360(6) Uani d . 1 . .
    H H9 0.6368 0.6553 0.7612 0.043 Uiso calc R 1 . .
    C C10 0.5343(3) 0.7862(2) 0.6376(3) 0.0357(6) Uani d . 1 . .
    C C11 0.7554(3) 0.7810(3) 0.8804(3) 0.0466(7) Uani d . 1 . .
    C C12 0.8043(3) 0.7459(3) 1.0257(3) 0.0538(8) Uani d . 1 . .
    H H12A 0.7857 0.8078 1.0738 0.065 Uiso calc R 1 . .
    H H12B 0.9118 0.7340 1.0647 0.065 Uiso calc R 1 . .
    C C13 0.7320(3) 0.6421(3) 1.0533(3) 0.0448(7) Uani d . 1 . .
    C C14 0.2081(3) 0.6423(3) 0.3235(3) 0.0526(8) Uani d . 1 . .
    H H14A 0.1200 0.6492 0.3401 0.079 Uiso calc R 1 . .
    H H14B 0.2560 0.5721 0.3582 0.079 Uiso calc R 1 . .
    H H14C 0.1802 0.6458 0.2280 0.079 Uiso calc R 1 . .
    C C15 0.2284(4) 0.8477(3) 0.3531(3) 0.0584(9) Uani d . 1 . .
    H H15A 0.2942 0.9091 0.3952 0.088 Uiso calc R 1 . .
    H H15B 0.1485 0.8467 0.3816 0.088 Uiso calc R 1 . .
    H H15C 0.1873 0.8559 0.2566 0.088 Uiso calc R 1 . .
    C C16 0.0614(3) 0.7906(3) 0.5836(3) 0.0426(7) Uani d . 1 . .
    C C17 0.0015(3) 0.9025(3) 0.5902(4) 0.0610(9) Uani d . 1 . .
    H H17A 0.0648 0.9585 0.5785 0.091 Uiso calc R 1 . .
    H H17B -0.0010 0.9122 0.6766 0.091 Uiso calc R 1 . .
    H H17C -0.0981 0.9095 0.5199 0.091 Uiso calc R 1 . .
    C C18 0.1878(3) 0.5480(3) 0.8103(3) 0.0515(8) Uani d . 1 . .
    C C19 0.0802(4) 0.5621(4) 0.8742(5) 0.0745(11) Uani d . 1 . .
    H H19A 0.1231 0.6113 0.9504 0.112 Uiso calc R 1 . .
    H H19B 0.0610 0.4907 0.9037 0.112 Uiso calc R 1 . .
    H H19C -0.0121 0.5931 0.8092 0.112 Uiso calc R 1 . .
    C C20 0.4659(3) 0.8132(3) 0.9125(3) 0.0493(8) Uani d . 1 . .
    H H20A 0.5508 0.8623 0.9491 0.074 Uiso calc R 1 . .
    H H20B 0.4373 0.7911 0.9828 0.074 Uiso calc R 1 . .
    H H20C 0.3838 0.8511 0.8424 0.074 Uiso calc R 1 . .
    C C21 0.4984(3) 0.9098(2) 0.6492(3) 0.0442(7) Uani d . 1 . .
    H H21A 0.4877 0.9488 0.5688 0.066 Uiso calc R 1 . .
    H H21B 0.5786 0.9426 0.7262 0.066 Uiso calc R 1 . .
    H H21C 0.4067 0.9151 0.6600 0.066 Uiso calc R 1 . .
    C C22 0.8180(4) 0.5406(3) 1.0472(3) 0.0521(8) Uani d . 1 . .
    H H22 0.9194 0.5392 1.1059 0.062 Uiso calc R 1 . .
    C C23 0.7666(5) 0.4541(3) 0.9690(4) 0.0662(10) Uani d . 1 . .
    H H23A 0.6660 0.4511 0.9083 0.079 Uiso calc R 1 . .
    H H23B 0.8303 0.3953 0.9737 0.079 Uiso calc R 1 . .
    C C24 0.7326(4) 0.6500(4) 1.1936(3) 0.0634(9) Uani d . 1 . .
    H H24A 0.6777 0.7150 1.1978 0.095 Uiso calc R 1 . .
    H H24B 0.8340 0.6553 1.2611 0.095 Uiso calc R 1 . .
    H H24C 0.6862 0.5846 1.2099 0.095 Uiso calc R 1 . .
_geom_special_details
;
 All esds (except the esd in the dihedral angle between two l.s. planes)
 are estimated using the full covariance matrix.  The cell esds are taken
 into account individually in the estimation of esds in distances, angles
 and torsion angles; correlations between esds in cell parameters are only
 used when they are defined by crystal symmetry.  An approximate
(isotropic)
 treatment of cell esds is used for estimating esds involving l.s. planes.
;
loop_
    _geom_bond_atom_site_label_1
    _geom_bond_atom_site_label_2
    _geom_bond_site_symmetry_2
    _geom_bond_distance
    _geom_bond_publ_flag
    O1 C1 . 1.439(4) yes
    O1 H1B . 0.8200 ?
    O2 C16 . 1.345(3) yes
    O2 C6 . 1.451(3) yes
    O3 C16 . 1.210(4) yes
    O4 C18 . 1.336(4) yes
    O4 C7 . 1.445(3) yes
    O5 C18 . 1.193(4) yes
    O6 C13 . 1.435(3) yes
    O6 C8 . 1.447(3) yes
    O7 C11 . 1.213(4) yes
    C1 C2 . 1.520(4) ?
    C1 C10 . 1.556(4) ?
    C1 H1A . 0.9800 ?
    C2 C3 . 1.518(5) ?
    C2 H2A . 0.9700 ?
    C2 H2B . 0.9700 ?
    C3 C4 . 1.541(4) ?
    C3 H3A . 0.9700 ?
    C3 H3B . 0.9700 ?
    C4 C14 . 1.533(4) ?
    C4 C15 . 1.536(4) ?
    C4 C5 . 1.571(4) ?
    C5 C6 . 1.537(3) ?
    C5 C10 . 1.567(4) ?
    C5 H5 . 0.9800 ?
    C6 C7 . 1.516(4) ?
    C6 H6 . 0.9800 ?
    C7 C8 . 1.536(4) ?
    C7 H7 . 0.9800 ?
    C8 C20 . 1.524(4) ?
    C8 C9 . 1.557(4) ?
    C9 C11 . 1.523(4) ?
    C9 C10 . 1.553(4) ?
    C9 H9 . 0.9800 ?
    C10 C21 . 1.540(4) ?
    C11 C12 . 1.509(4) ?
    C12 C13 . 1.524(5) ?
    C12 H12A . 0.9700 ?
    C12 H12B . 0.9700 ?
    C13 C22 . 1.499(5) ?
    C13 C24 . 1.531(4) ?
    C14 H14A . 0.9600 ?
    C14 H14B . 0.9600 ?
    C14 H14C . 0.9600 ?
    C15 H15A . 0.9600 ?
    C15 H15B . 0.9600 ?
    C15 H15C . 0.9600 ?
    C16 C17 . 1.479(5) ?
    C17 H17A . 0.9600 ?
    C17 H17B . 0.9600 ?
    C17 H17C . 0.9600 ?
    C18 C19 . 1.502(5) ?
    C19 H19A . 0.9600 ?
    C19 H19B . 0.9600 ?
    C19 H19C . 0.9600 ?
    C20 H20A . 0.9600 ?
    C20 H20B . 0.9600 ?
    C20 H20C . 0.9600 ?
    C21 H21A . 0.9600 ?
    C21 H21B . 0.9600 ?
    C21 H21C . 0.9600 ?
    C22 C23 . 1.301(5) ?
    C22 H22 . 0.9300 ?
    C23 H23A . 0.9300 ?
    C23 H23B . 0.9300 ?
    C24 H24A . 0.9600 ?
    C24 H24B . 0.9600 ?
    C24 H24C . 0.9600 ?
loop_
    _geom_angle_atom_site_label_1
    _geom_angle_atom_site_label_2
    _geom_angle_atom_site_label_3
    _geom_angle_site_symmetry_1
    _geom_angle_site_symmetry_3
    _geom_angle
    _geom_angle_publ_flag
    C1 O1 H1B . . 109.5 ?
    C16 O2 C6 . . 118.8(2) yes
    C18 O4 C7 . . 118.1(2) yes
    C13 O6 C8 . . 120.0(2) yes
    O1 C1 C2 . . 109.8(3) ?
    O1 C1 C10 . . 107.9(2) ?
    C2 C1 C10 . . 113.0(2) ?
    O1 C1 H1A . . 108.7 ?
    C2 C1 H1A . . 108.7 ?
    C10 C1 H1A . . 108.7 ?
    C1 C2 C3 . . 111.6(3) ?
    C1 C2 H2A . . 109.3 ?
    C3 C2 H2A . . 109.3 ?
    C1 C2 H2B . . 109.3 ?
    C3 C2 H2B . . 109.3 ?
    H2A C2 H2B . . 108.0 ?
    C2 C3 C4 . . 113.5(3) ?
    C2 C3 H3A . . 108.9 ?
    C4 C3 H3A . . 108.9 ?
    C2 C3 H3B . . 108.9 ?
    C4 C3 H3B . . 108.9 ?
    H3A C3 H3B . . 107.7 ?
    C14 C4 C15 . . 107.7(2) ?
    C14 C4 C3 . . 107.2(3) ?
    C15 C4 C3 . . 109.4(3) ?
    C14 C4 C5 . . 108.7(2) ?
    C15 C4 C5 . . 116.4(2) ?
    C3 C4 C5 . . 107.0(2) ?
    C6 C5 C10 . . 113.8(2) ?
    C6 C5 C4 . . 114.1(2) ?
    C10 C5 C4 . . 117.1(2) ?
    C6 C5 H5 . . 103.1 ?
    C10 C5 H5 . . 103.1 ?
    C4 C5 H5 . . 103.1 ?
    O2 C6 C7 . . 109.9(2) ?
    O2 C6 C5 . . 110.4(2) ?
    C7 C6 C5 . . 111.55(19) ?
    O2 C6 H6 . . 108.3 ?
    C7 C6 H6 . . 108.3 ?
    C5 C6 H6 . . 108.3 ?
    O4 C7 C6 . . 108.7(2) ?
    O4 C7 C8 . . 107.5(2) ?
    C6 C7 C8 . . 116.5(2) ?
    O4 C7 H7 . . 108.0 ?
    C6 C7 H7 . . 108.0 ?
    C8 C7 H7 . . 108.0 ?
    O6 C8 C20 . . 109.9(2) yes
    O6 C8 C7 . . 101.2(2) yes
    C20 C8 C7 . . 111.9(2) ?
    O6 C8 C9 . . 108.6(2) yes
    C20 C8 C9 . . 116.1(2) ?
    C7 C8 C9 . . 108.0(2) ?
    C11 C9 C10 . . 117.1(2) ?
    C11 C9 C8 . . 107.6(2) ?
    C10 C9 C8 . . 116.53(19) ?
    C11 C9 H9 . . 104.7 ?
    C10 C9 H9 . . 104.7 ?
    C8 C9 H9 . . 104.7 ?
    C21 C10 C9 . . 111.3(2) ?
    C21 C10 C1 . . 106.9(2) ?
    C9 C10 C1 . . 109.4(2) ?
    C21 C10 C5 . . 115.1(2) ?
    C9 C10 C5 . . 106.7(2) ?
    C1 C10 C5 . . 107.4(2) ?
    O7 C11 C12 . . 119.6(3) yes
    O7 C11 C9 . . 124.6(3) yes
    C12 C11 C9 . . 115.8(3) ?
    C11 C12 C13 . . 117.8(3) ?
    C11 C12 H12A . . 107.8 ?
    C13 C12 H12A . . 107.8 ?
    C11 C12 H12B . . 107.8 ?
    C13 C12 H12B . . 107.8 ?
    H12A C12 H12B . . 107.2 ?
    O6 C13 C22 . . 108.5(3) yes
    O6 C13 C12 . . 113.1(2) yes
    C22 C13 C12 . . 109.5(2) ?
    O6 C13 C24 . . 106.3(2) yes
    C22 C13 C24 . . 109.3(3) ?
    C12 C13 C24 . . 110.0(3) ?
    C4 C14 H14A . . 109.5 ?
    C4 C14 H14B . . 109.5 ?
    H14A C14 H14B . . 109.5 ?
    C4 C14 H14C . . 109.5 ?
    H14A C14 H14C . . 109.5 ?
    H14B C14 H14C . . 109.5 ?
    C4 C15 H15A . . 109.5 ?
    C4 C15 H15B . . 109.5 ?
    H15A C15 H15B . . 109.5 ?
    C4 C15 H15C . . 109.5 ?
    H15A C15 H15C . . 109.5 ?
    H15B C15 H15C . . 109.5 ?
    O3 C16 O2 . . 123.2(3) ?
    O3 C16 C17 . . 125.5(2) ?
    O2 C16 C17 . . 111.3(3) ?
    C16 C17 H17A . . 109.5 ?
    C16 C17 H17B . . 109.5 ?
    H17A C17 H17B . . 109.5 ?
    C16 C17 H17C . . 109.5 ?
    H17A C17 H17C . . 109.5 ?
    H17B C17 H17C . . 109.5 ?
    O5 C18 O4 . . 124.2(3) ?
    O5 C18 C19 . . 125.3(3) ?
    O4 C18 C19 . . 110.5(3) ?
    C18 C19 H19A . . 109.5 ?
    C18 C19 H19B . . 109.5 ?
    H19A C19 H19B . . 109.5 ?
    C18 C19 H19C . . 109.5 ?
    H19A C19 H19C . . 109.5 ?
    H19B C19 H19C . . 109.5 ?
    C8 C20 H20A . . 109.5 ?
    C8 C20 H20B . . 109.5 ?
    H20A C20 H20B . . 109.5 ?
    C8 C20 H20C . . 109.5 ?
    H20A C20 H20C . . 109.5 ?
    H20B C20 H20C . . 109.5 ?
    C10 C21 H21A . . 109.5 ?
    C10 C21 H21B . . 109.5 ?
    H21A C21 H21B . . 109.5 ?
    C10 C21 H21C . . 109.5 ?
    H21A C21 H21C . . 109.5 ?
    H21B C21 H21C . . 109.5 ?
    C23 C22 C13 . . 127.2(3) ?
    C23 C22 H22 . . 116.4 ?
    C13 C22 H22 . . 116.4 ?
    C22 C23 H23A . . 120.0 ?
    C22 C23 H23B . . 120.0 ?
    H23A C23 H23B . . 120.0 ?
    C13 C24 H24A . . 109.5 ?
    C13 C24 H24B . . 109.5 ?
    H24A C24 H24B . . 109.5 ?
    C13 C24 H24C . . 109.5 ?
    H24A C24 H24C . . 109.5 ?
    H24B C24 H24C . . 109.5 ?
loop_
    _geom_hbond_atom_site_label_D
    _geom_hbond_atom_site_label_H
    _geom_hbond_atom_site_label_A
    _geom_hbond_site_symmetry_A
    _geom_hbond_distance_DH
    _geom_hbond_distance_HA
    _geom_hbond_distance_DA
    _geom_hbond_angle_DHA
    _geom_hbond_publ_flag
    O1 H1B O3 1_655 0.82 2.16 2.972(3) 171.9 yes
    C12 H12A O5 2_657 0.97 2.61 3.564(5) 167.0 yes
data_global
_journal_date_recd_electronic     2006-04-25
_journal_date_accepted     2006-05-16
_journal_name_full     'Acta Crystallographica, Section E'
_journal_year     2006
_journal_volume     62
_journal_issue      6
_journal_page_first     o2408
_journal_page_last     o2410
_journal_paper_category     EO
_journal_coeditor_code     HK2036
_publ_contact_author_name     'Professor Ling-Yi Kong'
_publ_contact_author_address
;
Department of Natural Medicinal Chemistry
China Pharmaceutical University
Nanjing 210009
People's Republic of China
;
_publ_contact_author_email     lykong@jlonline.com
_publ_contact_author_fax     '86-25-85301528'
_publ_contact_author_phone     '86-25-85391232'
_publ_section_title
;
Forskolin G
;
loop_
    _publ_author_name
    _publ_author_address
    'Yu-Pei Shan'
;
Department of Natural Medicinal Chemistry
China Pharmaceutical University
Nanjing 210009
People's Republic of China
;
    'Xiao-Bing Wang'
;
Department of Natural Medicinal Chemistry
China Pharmaceutical University
Nanjing 210009
People's Republic of China
;
    'Ling-Yi Kong'
;
Department of Natural Medicinal Chemistry
China Pharmaceutical University
Nanjing 210009
People's Republic of China
;
