Startseite Crystal structure of octahydro-7aR,8′R-dimethylspiro[isobenzofuran-4(1H), 4′ (3′H)-[1H-7,9a]methanocyclohepta[c]pyran]-1′,3, 9′ (3aH,4′aH)-trione, C20H26O5
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Crystal structure of octahydro-7aR,8′R-dimethylspiro[isobenzofuran-4(1H), 4′ (3′H)-[1H-7,9a]methanocyclohepta[c]pyran]-1′,3, 9′ (3aH,4′aH)-trione, C20H26O5

  • Kang He , Yu-Xue Wang , Jiang-Hai Ye , Juan Zou ORCID logo , Wei Zhao , Jing-Jie Zhang EMAIL logo und Jin-Yi Zhang EMAIL logo
Veröffentlicht/Copyright: 24. April 2020

Abstract

C20H26O5, monoclinic, P21 (no. 4), a = 7.0011(5) Å, b = 12.3136(9) Å, c = 10.4847(8) Å, β = 105.734(2)°, V = 870.01(11) Å3, Z = 2, Rgt(F) = 0.0384, wRref(F2) = 0.0925, T = 302(2) K.

CCDC no.: 1995285

The molecular structure is shown in the figure. Table 1 contains crystallographic data and Table 2 contains the list of the atoms including atomic coordinates and displacement parameters.

Table 1:

Data collection and handling.

Crystal:Colourless block
Size:0.18 × 0.20 × 0.25 mm
Wavelength:Mo Kα radiation (0.71073 Å)
μ:0.094 mm−1
Diffractometer, scan mode:Bruker APEXII, φ and ω
θmax, completeness:28.4°, 99%
N(hkl)measured, N(hkl)unique, Rint:12197, 4319, 0.030
Criterion for Iobs, N(hkl)gt:Iobs > 2 σ(Iobs), 3756
N(param)refined:228
Programs:Olex2 [1], SHELX [2], [3]
Table 2:

Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).

AtomxyzUiso*/Ueq
C10.2697(3)0.69688(17)0.5140(2)0.0372(5)
C20.1205(3)0.66270(19)0.5865(2)0.0400(5)
H2−0.1595140.3421400.1261510.082*
C30.2157(4)0.5873(2)0.7001(2)0.0419(5)
H3A0.1188900.5674840.7469180.050*
H30.7391270.5179000.6278010.056*
C40.2949(3)0.48367(18)0.6493(2)0.0328(4)
H40.2058420.7461500.4430540.045*
C50.4311(3)0.51159(16)0.5599(2)0.0295(4)
H50.3763270.7362790.5748080.045*
C60.6280(3)0.5335(2)0.6636(3)0.0467(6)
H60.1752640.3453820.5501360.061*
C70.5576(3)0.4786(2)0.3052(2)0.0368(5)
H70.0218860.4409270.5292130.061*
C80.3366(3)0.48871(17)0.2456(2)0.0303(4)
H80.0772320.3762810.6630350.061*
C90.2145(3)0.54946(16)0.33105(19)0.0276(4)
H90.3242770.6245810.7618640.050*
C100.3588(3)0.60162(16)0.4551(2)0.0290(4)
H100.0693540.7264470.6205750.048*
C110.0627(3)0.62578(19)0.2417(2)0.0380(5)
H110.0100900.6260760.5256320.048*
C12−0.0533(3)0.5681(2)0.1150(2)0.0412(5)
H120.4836290.6945560.3357350.048*
C130.0802(4)0.5047(2)0.0465(2)0.0422(5)
H13A0.0393880.517434−0.0493900.051*
H130.6155740.6905520.4827970.048*
C140.2959(4)0.5387(2)0.1053(2)0.0405(5)
H14A0.3822850.5081470.0562220.049*
H140.1634350.3485640.0164940.050*
C150.2371(3)0.37717(18)0.2142(2)0.0347(5)
H15−0.0594260.2411170.0799200.082*
C160.0946(4)0.3814(2)0.0768(2)0.0418(5)
H16−0.1780720.324585−0.0248200.082*
C17−0.0926(4)0.3164(2)0.0633(3)0.0545(7)
C180.4427(4)0.4314(2)0.7669(2)0.0460(6)
C190.1268(3)0.4042(2)0.5927(2)0.0405(5)
H190.3103130.6170900.1088250.049*
C200.5332(3)0.64730(19)0.4115(3)0.0402(5)
H20−0.1472560.5182990.1365480.049*
H21−0.1283610.6216670.0536460.049*
H220.1309950.6882070.2185670.046*
H23−0.0289650.6516890.2895970.046*
H240.1389510.4938370.3632930.033*
H250.4476630.4451620.5125370.035*
H260.6361230.6087070.6920360.056*
O10.4088(3)0.3715(2)0.8479(2)0.0701(6)
O20.6294(3)0.46213(19)0.77234(19)0.0562(5)
O30.6523(2)0.56236(14)0.37659(19)0.0458(4)
O40.6534(3)0.40347(15)0.2846(2)0.0519(5)
O50.2599(3)0.30232(13)0.29085(17)0.0448(4)

Source of material

The dried and powdered leaves of Isodon rubescence (Hemsl. Hara.) were extracted with methanol four times at room temperature. The residue was dissolved in methanol and ethyl acetate, which was then divided into five fractions using silica gel column with petroleum ether/ethyl acetate (volume ratio 100:1-1:1). Fraction B was separated by silica gel column with petroleum ether/ethyl acetate (volume ratio 9:1) to get the crude product. Then the product was purified by sephadex LH-20 with dichloromethane/methanol (volume ratio 1:1). After dissolving the sample with methanol colorless needle crystals of the title compound (20 mg, guidongnin B) were obtained within 1 day.

Experimental details

The suitable crystal was selected and measured on a ’Bruker APEX-II CCD’ diffractometer with MoKα monochromated radiation (λ = 0.71073 Å) at 302(2) K. Using Olex2 [1], the structure was solved with the ShelXL [2] structure solution program and refined with the ShelXL [3] refinement package. All hydrogen atoms were positioned geometrically, with the d(C—H) = 0.96–0.98 Å, Uiso(H) = 1.2 times Ueq(C) and Uiso(H) = 1.5 times Ueq(O).

Comment

Terpenoids are abundant in the genus of Isodon, and possess a wide range of bioactivities [4], [5]. In order to discover active terpenoids from Isodon rubescence (Hemsl. Hara.), phytochemical investigation led to the isolation of the title compound. The bond distances and bond angles in the title structure are all in normal ranges. The crystal structure of title compound contains one five-membered lactone ring, one six-membered lactone ring, one five-membered carbon ring and two six-membered carbon rings. The carbon skeleton is substituted by three carbonyl groups and two methyl groups. The lactone rings were further determined by the distances d(C18—O1) = 1.197(3) Å, d(C18—O2) = 1.347(3) Å, d(C6—O2) = 1.437(3) Å and the distances d(C7—O3) = 1.340(3) Å, d (C7—O4) = 1.196(3) Å, d (C20—O3) = 1.445(3) Å. The carbonyl group was confirmed by the distance of d(C15—O5) = 1.205(3) Å.

Acknowledgements

The authors gratefully acknowledge support from Youth Science and Technology Talent Project of Guizhou Province [No. (2017)5618] and domestic first-rate fund of China [No. GNYL (2017)008].

References

1. Dolomanov, O. V.; Bourhis, L. J.; Gildea, R. J.; Howard, J. A. K.; Puschmann, H.: OLEX2: a complete structure solution, refinement and analysis program. J. Appl. Crystallogr. 42 (2009) 339–341.10.1107/S0021889808042726Suche in Google Scholar

2. Sheldrick, G. M.: SHELXT – integrated space-group and crystal-structure determination. Acta Crystallogr. A71 (2015) 3–8.10.1107/S2053273314026370Suche in Google Scholar PubMed PubMed Central

3. Sheldrick, G. M.: Crystal structure refinement with SHELXL. Acta Crystallogr. C71 (2015) 3–8.10.1107/S2053229614024218Suche in Google Scholar PubMed PubMed Central

4. Liu, M.; Wang, W. G.: Diterpenoids from Isodon species: an update. Nat. Prod. Rep. 34 (2017) 1039–1174.10.1039/C7NP00027HSuche in Google Scholar PubMed

5. Sun, H. D.; Huang, S. X.; Han, Q. B.: Diterpenoids from Isodon species and their biological activities. Nat. Prod. Rep. 23 (2006) 673–698.10.1039/b604174dSuche in Google Scholar PubMed

Received: 2020-03-08
Accepted: 2020-04-07
Published Online: 2020-04-24
Published in Print: 2020-06-25

©2020 Kang He et al., published by De Gruyter, Berlin/Boston

This work is licensed under the Creative Commons Attribution 4.0 Public License.

Artikel in diesem Heft

  1. Frontmatter
  2. Crystal structure of bis [1-(phenylsulfonyl)-2-(1-(pyrazin-2-yl)ethylidene)hydrazin-1-ido-κ3N,N′,O]cobalt(II), C24H22N8O4S2Co
  3. The crystal structure of 1,3-bis(4-(methoxycarbonyl)benzyl)-2-methyl-1H-benzo[d]imidazol-3-ium bromide, C26H25BrN2O4
  4. Crystal structure of {tris((1H-benzo[d]imidazol-2-yl)methyl)amine-κ4N,N′,N′′,N′′′}-(nitrito-κ2O,O′)nickel(II) perchlorate – ethanol (1/1), C26H27ClN8NiO7
  5. Crystal structure of catena-poly[aqua[(μ2-4,5-dicarboxylato-2-(2-carboxylatophenyl)imidazol-1-ido-κ4N,O,O′:N′)](μ2-4,4′-bipyridine-κ2N:N′)dicopper(II)], C22H14Cu2N4O7
  6. Crystal structure of chlorido-tris(4-methylbenzyl-κC)-(triphenylarsine oxide-κO)tin(IV), C42H42AsClOSn
  7. The crystal structure of 4,4′-bipyridinium bis(3-carboxy-2-nitrobenzoate) tetrahydrate, C13H13N2O8
  8. Crystal structure of 1-(3-chlorophenyl)-4-(4-(((2,3-dihydro-1H-inden-5-yl)oxy)methyl)phenethyl)piperazine, C28H31ClN2O
  9. Crystal structure of catena-poly[diaqua-bis(μ2-5,5′-(1H-imidazole-4,5-diyl)bis(tetrazol-2-ido)-κ4N,N′:N′′,N′′′)magnesium], C10H8N20O2Mg
  10. The crystal structure of (E)-2-((2-hydroxy-4-ethoxybenzylidene)amino)-2-methylpropane-1,3-diol monohydrate, C13H21NO5
  11. Crystal structure of catena-poly[diaqua-(μ2-bipyridine-κ2N:N′)-bis(3,5-dichloroisonicotinato-κO)cadmium(II)] dihydrate, C22H20CdCl4N4O8
  12. The crystal structure of 4-(4-chlorophenyl)cyclohexane-1-carboxylic acid, C13H15ClO2
  13. Redetermination of the crystal structure of yttrium(III) trinitrate(V) pentahydrate, Y(NO3)3 ⋅ 5 H2O, H10N3O14Y
  14. Crystal structure of catena-poly[di-μ2-chlorido-1,10-phenanthroline-κ2N,N′-cadmium(II)], C12H8Cl2CdN2
  15. Crystal structure of 4-((2-methyl-6-(trifluoromethyl)pyrimidin-4-yl)oxy)benzoic acid, C13H9F3N2O3
  16. Crystal structure of 3-acetyl-4-hydroxybenzoic acid, C18H16O8
  17. Crystal structure of bis(N,2-bis(4-ethoxybenzylidene)hydrazine-1-carbohydrazonothioato-κ2N,S)nickel(II) — N,N-dimethylformamide (1/2), C44H56N10S2O6Ni
  18. The crystal structure of 5-chloro-4,6-dimethoxypyrimidin-2-amine, C6H8ClN3O2
  19. Crystal structure of poly[aqua-(μ4-benzene-1,2,4,5-tetracarboxylato-κ4O,O′,O′′,O′′′)bis(μ2-1-(4-(1H-imidazol-1-yl)benzyl)-1H-1,2,4-triazole-κ2N:N)dinickel(II)], NiC17H14N5O5
  20. Crystal structure of poly[aqua(5-dimethylamino)naphthalene-1-sulfonato-κ2N:O)(μ2-4,4′-bipyridyl -κ2N:N′)silver(I)], C44H44Ag2N6O8S2
  21. Crystal structure of 1-[3-(trifluoromethyl)cinnamoyl]-3-(pyridin-2-yl-κN)pyrazole-κ2N-bis(2-phenylpyridinato-k2C,N)iridium(III) hexafluorophosphate complex, [C40H28F3IrN5O]PF6
  22. Crystal structure of catena-poly[aqua(μ6-piperazine-1,4-bisethanesulfonato-κ6N:N′:O:O′:O′′:O′′′)(μ2-pyrazinyl-κ2N:N′)disilver(I)sesquihydrate], C12H30Ag2N4O11S2
  23. Crystal structure of (E)-1-(2-nitrophenyl)-N-(o-tolyl)methanimine, C14H12N2O2
  24. Crystal structure of 4′-amino-3′,5′-diisopropyl-(1,1′-biphenyl)-4-carbonitrile, C19H22N2
  25. The crystal structure of poly[bis(N,N-dimethylformamide-κ1O)-tetrakis(μ2-cyanido-κ2C:N)dinickel(II)], C10H14N6O2Ni2
  26. Crystal structure of rac-trans-N,N′-bis(3-bromo-5-chlorosalicylidene)-1,2-cyclohexanediamine, C20H18Br2Cl2N2O2
  27. Crystal structure of rac-trans-N,N′-bis(3,5-dibromosalicylidene)-1,2-cyclohexanediamine, C20H18Br4N2O2
  28. The crystal structure of (dichromato-κ2O,O′)bis(1,10-phenanthroline-κ2N,N′)nickel(II), C12H16N4O7Cr2Ni
  29. The crystal structure of 3-((1R,2S)-1-methylpyrrolidin-1-ium-2-yl)pyridin-1-ium tetrachloridozincate(II) monohydrate, C10H18Cl4ZnN2O
  30. Crystal structure of bis(μ2-azido-k2N,N)-bis(2-amino-1-(N-(3-bromosalicylaldiminato))ethane)-dicopper(II), C20H18Br4N2O2
  31. Crystal structure of (η6-1-methyl-4-isopropylbenzene)-[5-bromo-2-(2-pyridyl)phenyl-κ2C,N]-chloro-ruthenium(II), C21H21BrClNRu
  32. Crystal structure of N-(methyl(oxo)(1-(6-(trifluoromethyl)pyridin-3-yl)ethyl)-λ6-sulfanylidene)cyanamide, C10H10F3N3OS
  33. Crystal structure of 6,6′-((cyclohexane-1,2-diylbis(azanylylidene))bis(methanylylidene))bis(2-bromo-4-chlorophenolato-κ4N,N′,O,O′)nickel(II), C20H16Br2Cl2NiN2O2
  34. Redetermination of the crystal structure of catena-poly[aqua-(1,10-phenanthroline-κ2N,N′)-(μ2-tetraoxidomolybdato(VI)-κ2O:O′)manganese(II) monohydrate, C12H12N2O6MoMn
  35. The crystal structure tetrakis(μ2-o-chlorobenzoato-κ2O:O′)-bis(methanol-κ1O)dirhodium(II), C30H24Cl4O10Rh2
  36. Crystal structure of bis(2,3-diphenyltetrazolidine-5-thione-κ1S)-(nitrato-κ1O)-(nitrato-κ2O,O′)lead(II), C26H20N10O6S2Pb
  37. Crystal structure of bis(3-bromo-N-(1-(3-methylpyrazin-2-yl)ethylidene)benzohydrazonato-κ3O,N,N′)cadmium(II) hemihydrate, C28H25N8O2.5Br2Cd
  38. Crystal structure of catena-poly[tetrakis(μ2-trifluoroacetato-κ2O:O′)(μ2-2,5-dimethylpyrazine-κ2N,N′)dicopper(II)], C7H4CuF6NO4
  39. The crystal structure of catena-poly[bis[3-azoniapentane-1,5-diammonium][bis(μ4-oxo)-tetrakis(μ3-oxo)-heptakis(μ2-oxo)-tetradecaoxo-octa-molybdenum] dihydrate], (C8H36N6O29Mo8)n
  40. Crystal structure of tetraaqua-bis(2-((3,5,6-trichloropyridin-2-yl)oxy)acetato-κO)-nickel(II)—diaqua-bis(2-((3,5,6-trichloropyridin-2-yl)oxy)acetato-nickel(II), C28H24Cl12N4Ni2O18
  41. The crystal structure of bis(2-hydroxypyrimidinium) pentachloridobismuthate(III), (C4N2H5O)2BiCl5
  42. The crystal structure of catena-poly[(μ2-4,4′-dipyridine-κ2N,N′)-bis(3,5,6-trichloropyridine-2-oxyacetato-κO)-bis(ethanol-κO)nickel(II)], C28H26Cl6N4NiO8
  43. Crystal structure and anti-inflammatory activity of (3E,5E)-1-((4-chlorophenyl)sulfonyl)-3,5-bis(4-fluorobenzylidene)piperidin-4-one-dichloromethane (1/1), C26H20Cl3F2NO3S
  44. The crystal structure of 5-bromopicolinic acid monohydrate, C6H6BrNO3
  45. The crystal structure of 2-(3-(4-bromophenyl)-5-(4-fluorophenyl)-4,5-dihydro-1H-pyrazol-1-yl)-8H-indeno[1,2-d]thiazole, C25H17BrFN3S
  46. The crystal structure of catena-poly[(μ2-2-((3-bromo-2-oxidobenzylidene)amino)acetato-κ4O,N,O′:O′′)-(dimethylformamide-κ1O)]zinc(II), C12H13N2O4BrZn
  47. Crystal structure of aqua-azido-κ1N-(6,6′-((propane-1,3-diylbis(azanylylidene))bis(methanylylidene))bis(3-bromophenolato)-κ4N,N′,O,O′iron(III), C17H16Br2FeN5O3
  48. The crystal structure of tris(1-ethylimidazole-κ1N)-(sulfato-κ2O,O′)vanadium(IV), C15H24N6O5SV
  49. Crystal structure of (E)-3-methoxy-N′-(1-(pyridin-2-yl)ethylidene)benzohydrazide, C15H15N3O2
  50. Crystal structure of dichloro-bis-(1-butyl-1H-benzo[d]imidazole)-nickel(II), C22H28Cl2N4Ni
  51. The crystal structure of 2-(2,3-dimethoxyphenyl)-3-hydroxy-4H-chromen-4-one, C17H14O5
  52. The crystal structure of 5-(2-(4-fluorophenyl)hydrazono)-4-methyl-2-((3-(5-methyl-1-(4-methylphenyl)-1H-1,2,3-triazol-4-yl)-1-phenyl-1H-pyrazol-4-yl)methylene) hydrazono)-2,5-dihydrothiazole dimethylformamide monosolvate, C30H25FN10S⋅C3H7NO
  53. The crystal structure of 1,8-bis(pyridin-4-ylethynyl)anthracene-1,2,4,5-tetrafluoro-3,6-diiodobenzene (2/1), C62H32F4I2N4
  54. The crystal structure of 3,6-di-tert-butyl-1,8-diiodo-9-methyl-9H-carbazole, C21H25I2N
  55. The crystal structure of 8-((4-chlorophenylamino)methylene)-6,10-dioxaspiro[4.5]decane-7,9-dione, C15H14ClNO4
  56. The crystal structure of catena-poly[oktaaqua-bis(μ2-4,4′-ethene-1,2-diyldipyridine-κ2N:N′)-(μ2-3,3′-(1-oxidodiazene-1,2-diyl)diphthalato-κ2O:O′)dicobalt(II)] dihydrate, C28H36N4O19Co2
  57. Crystal structure of (E)-1-(2-cyano-3-oxo-1-phenylprop-1-en-1-yl)-3,7-diphenylindolizine-6-carbonitrile, C31H19N3O
  58. Crystal structure of 1,1′-bis(diphenylphosphino)ferrocene-(1,1′-bis(diphenylphosphino)ferrocene-κ2P,P′)-(O-isobutyl sulfurodithioito-κ2S,S′)copper(I), C39H37CuFeOP2S2
  59. Crystal structure of poly[(5-bimethylamino-1-naphthalenesulfonato-κO)-(μ3-hexamethylenetetramino-κ3N:N′:N′′)silver(I)] dihydrate, C36H52Ag2N10O8S2
  60. Crystal structure of poly[μ2-diaqua-(μ2-2-amino-4,5-dicyano-κ2N:N′-imidazol-1-ide)sodium(I)], C5H6N5O2Na
  61. Crystal structure of (1,3-propanediamine-κ2N,N′)(N-(3-aminopropyl)-α-methyl aspartato-κ4N,N′,O,O′)cobalt(III) chloride, C11H24ClCoN4O4
  62. Crystal structure and anti-inflammatory activity of (3E,5E)-3,5-bis(4-fluorobenzylidene)-1-((4-fluorophenyl)sulfonyl)piperidin-4-one-dichloromethane (1/1), C26H20Cl2F3NO3S
  63. Crystal structure of (S)-(+)-1-cyclohexylethylaminium chloride, C8H18NCl
  64. The crystal structure of tris(nitrato-κ2O,O′)-bis(4,4,5,5-tetramethyl-2-(o-pyridyl)imidazoline-1-oxyl 3-oxide-κ2N,O)yttrium(III), C24H32N9O13Y
  65. Hydrogen bonding versus packing effects in the crystal structure of 3-((1R,2S)-1-methylpyrrolidin-1-ium-2-yl)pyridin-1-ium tetraiodidozincate(II), C10H16I4ZnN2
  66. Dimerization of 2-[(2-((2-aminophenyl)thio)phenyl)amino]-cyclohepta-2,4,6-trien-1-one through hydrogen bonding, C19H16N2OS
  67. Crystal structure of 1-(4-chloro-phenyl)-7-ethoxyl-6,8-difluoro-4-oxo-1,4-dihydro-quinoline-3-carboxylic acid, C18H12ClF2NO4
  68. Crystal structure of 7-ethoxy-6,8-difluoro-4-oxo-1-pyridin-2-ylmethyl-1,4-dihydro-quinoline-3-carboxylic acid, C18H14F2N2O4
  69. Crystal structure of octahydro-7aR,8′R-dimethylspiro[isobenzofuran-4(1H), 4′ (3′H)-[1H-7,9a]methanocyclohepta[c]pyran]-1′,3, 9′ (3aH,4′aH)-trione, C20H26O5
  70. Crystal structure of bis(5-ethoxy-2-(((1-hydroxy-2-methyl-3-oxidopropan-2-yl)imino)methyl)phenolato-κ3N,O,O’)manganese(IV) – methanol (1/1), C27H38MnN2O9
  71. Crystal structure of 8a,8a′′-oxybis(8aH-8,9-dioxa-3a1λ4-aza-8aλ4-borabenzo[fg]tetracene), C34H22B2N2O5
  72. Crystal structure of bromido-triphenyl-(triphenylarsine oxide-κO)tin(IV), C36H30AsBrOSn
  73. Crystal structure of catena-poly[chlorido-(μ2-formato-κ2O:O′)-(1,10-phenathroline-κ2N,N′)copper(II)], C26H18Cl2Cu2N4O4
  74. The crystal structure of poly[(μ10-5-carboxyisophthalato-κ10O)disodium], C9H4Na2O6
  75. The crystal structure of 3,5-difluoroisonicotinic acid, C6H3F2NO2
  76. The crystal structure of ethyl-1-(N-(adamantan-1-yl)-carbamothioyl)piperidine-4-carboxylate, C19H30N2O2S
  77. Crystal structure of 5-methyl-3-phenyl-1-tosyl-1,2,3,4-tetrahydropyridine, C19H21NO2S
  78. Crystal structure of bis((3-chlorosalicylidene)-ethylenediaminato-κ4N,N′,O,O′)nickel (II), C16H12Cl2NiN2O2
  79. Crystal structure of (E)-N′-(2-chloro-6-hydroxybenzylidene)-4-hydroxybenzohydrazide — dihydrofuran-2(3H)-one (1/1), C18H17ClN2O5
  80. Crystal structure of bis((3-bromosalicylidene)-ethylenediaminato-κ4N,N′,O,O′) nickel (II), C16H12Br2NiN2O2
  81. Crystal structure of trimethylsulfoxonium tetrachloridocobaltate(II) [(CH3)3SO]2CoCl4
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