Synthesis and crystal structure of (S,E)-4-hydroxy-3-(2-((4aR,6aS,7R,10aS,10bR)-3,3,6a,10b-tetramethyl-8-methylenedecahydro-1H-naphtho[2,1-d][1,3]dioxin-7-yl)ethylidene)dihydrofuran-2(3H)-one, C23H34O5
Abstract
C23H34O5, orthorhombic, P212121 (no. 19), a = 11.1838(3) Å, b = 11.7824(3) Å, c = 16.3160(5) Å, V = 2149.99(10) Å3, Z = 4,
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.

Data collection and handling.
Crystal: | Colourless block |
Size: | 0.14 × 0.12 × 0.11 mm |
Wavelength: | Cu Kα radiation (1.54184 Å) |
μ: | 0.67 mm−1 |
Diffractometer, scan mode: | SuperNova, ω |
θ max, completeness: | 73.9°, >99% |
N(hkl)measured, N(hkl)unique, R int: | 8110, 4232, 0.025 |
Criterion for I obs, N(hkl)gt: | I obs > 2σ(I obs), 3679 |
N(param)refined: | 266 |
Programs: | CrysAlis PRO [1], Olex2 [2], Shelx [3] |
Fractional atomic coordinates and isotropic or equivalent isotropic displacement parameters (Å2).
Atom | x | y | z | U iso*/U eq |
---|---|---|---|---|
O1 | 0.18819 (17) | 0.59727 (18) | 0.50066 (12) | 0.0619 (5) |
O2 | 0.34093 (16) | 0.48648 (15) | 0.44532 (11) | 0.0528 (4) |
O3 | 0.8734 (3) | 0.21889 (18) | 0.7631 (2) | 0.1146 (12) |
H3 | 0.862456 | 0.149198 | 0.770993 | 0.172* |
O4 | 1.14370 (19) | 0.29991 (16) | 0.72856 (14) | 0.0678 (6) |
O5 | 1.12454 (19) | 0.48536 (16) | 0.71378 (14) | 0.0666 (5) |
C1 | 0.3919 (2) | 0.65135 (19) | 0.52992 (15) | 0.0455 (5) |
C2 | 0.2728 (2) | 0.6107 (2) | 0.56600 (17) | 0.0537 (6) |
H2A | 0.284310 | 0.537431 | 0.594655 | 0.064* |
H2B | 0.242667 | 0.666830 | 0.606141 | 0.064* |
C3 | 0.4051 (2) | 0.5924 (2) | 0.44584 (15) | 0.0487 (6) |
H3A | 0.370981 | 0.643034 | 0.402560 | 0.058* |
C4 | 0.5335 (2) | 0.5688 (2) | 0.42584 (16) | 0.0535 (6) |
H4A | 0.577276 | 0.641747 | 0.423400 | 0.064* |
H4B | 0.537755 | 0.533627 | 0.370809 | 0.064* |
C5 | 0.5961 (2) | 0.4908 (2) | 0.48740 (15) | 0.0509 (6) |
H5A | 0.683545 | 0.501057 | 0.481656 | 0.061* |
H5B | 0.577564 | 0.411113 | 0.472834 | 0.061* |
C6 | 0.5619 (2) | 0.50988 (18) | 0.57861 (14) | 0.0401 (5) |
C7 | 0.5006 (2) | 0.62818 (17) | 0.58752 (15) | 0.0413 (5) |
H7 | 0.562891 | 0.684578 | 0.570861 | 0.050* |
C8 | 0.4722 (2) | 0.6559 (2) | 0.67701 (16) | 0.0514 (6) |
H8A | 0.435744 | 0.732307 | 0.680258 | 0.062* |
H8B | 0.413328 | 0.600375 | 0.698190 | 0.062* |
C9 | 0.5845 (3) | 0.6526 (2) | 0.73036 (18) | 0.0576 (7) |
H9A | 0.637532 | 0.716561 | 0.715312 | 0.069* |
H9B | 0.561684 | 0.661796 | 0.788597 | 0.069* |
C10 | 0.6511 (2) | 0.5425 (2) | 0.71985 (15) | 0.0469 (6) |
C11 | 0.6781 (2) | 0.51401 (18) | 0.63154 (14) | 0.0424 (5) |
H11 | 0.725091 | 0.579767 | 0.610022 | 0.051* |
C12 | 0.7600 (2) | 0.4100 (2) | 0.62167 (18) | 0.0527 (6) |
H12A | 0.726785 | 0.345966 | 0.653742 | 0.063* |
H12B | 0.761488 | 0.387022 | 0.563307 | 0.063* |
C13 | 0.8845 (2) | 0.43309 (19) | 0.64961 (15) | 0.0469 (5) |
H13 | 0.911699 | 0.509174 | 0.644581 | 0.056* |
C14 | 0.9612 (2) | 0.35955 (19) | 0.68054 (14) | 0.0425 (5) |
C15 | 0.9476 (3) | 0.2341 (2) | 0.69551 (18) | 0.0532 (6) |
H15 | 0.914420 | 0.195072 | 0.646079 | 0.064* |
C16 | 1.0753 (3) | 0.1998 (3) | 0.7104 (3) | 0.0889 (13) |
H16A | 1.079593 | 0.146010 | 0.756851 | 0.107* |
H16B | 1.108022 | 0.161897 | 0.661088 | 0.107* |
C17 | 1.0814 (2) | 0.3925 (2) | 0.70781 (15) | 0.0472 (6) |
C18 | 0.2140 (2) | 0.5019 (3) | 0.45048 (17) | 0.0603 (7) |
C19 | 0.1605 (3) | 0.5272 (4) | 0.3672 (2) | 0.0842 (11) |
H19A | 0.199790 | 0.594024 | 0.343618 | 0.126* |
H19B | 0.074744 | 0.542166 | 0.373134 | 0.126* |
H19C | 0.172359 | 0.461885 | 0.330914 | 0.126* |
C20 | 0.1664 (4) | 0.3932 (3) | 0.4883 (3) | 0.0839 (10) |
H20A | 0.189874 | 0.328359 | 0.454273 | 0.126* |
H20B | 0.079029 | 0.396994 | 0.491570 | 0.126* |
H20C | 0.199667 | 0.384040 | 0.543484 | 0.126* |
C21 | 0.3847 (3) | 0.7798 (2) | 0.5146 (2) | 0.0659 (8) |
H21A | 0.384082 | 0.819940 | 0.567138 | 0.099* |
H21B | 0.311204 | 0.797247 | 0.484335 | 0.099* |
H21C | 0.454091 | 0.804028 | 0.482371 | 0.099* |
C22 | 0.4842 (2) | 0.41017 (19) | 0.60855 (17) | 0.0504 (6) |
H22A | 0.457706 | 0.424817 | 0.664817 | 0.076* |
H22B | 0.531172 | 0.339984 | 0.607097 | 0.076* |
H22C | 0.414299 | 0.402301 | 0.572780 | 0.076* |
C23 | 0.6814 (3) | 0.4788 (3) | 0.78361 (19) | 0.0614 (7) |
H23A | 0.665 (3) | 0.515 (3) | 0.842 (2) | 0.074 (10)* |
H23B | 0.731 (3) | 0.407 (3) | 0.779 (2) | 0.074 (10)* |
1 Source of material
Andrographolide (40 g, 114 mmol) was dissolved in a mixed solution of toluene (400 mL) and dimethyl sulfoxide (64 mL), and 4-toluenesulfonic acid (2 g, 11.6 mmol) and 2,2-dimethoxypropane (48 mL, 544 mmol) were added separately with stirring and heated to 90 °C for 4 h. Upon completion, the mixture was filtered through celite, and washed with CH2Cl2 (10 mL) and concentrated in vacuo. Then, the crude product was subjected to flash column chromatography on silica gel (petroleum ether/ethyl acetate = 1:1) to afford the product.
2 Experimental details
The carbon-bound hydrogen atoms were placed in their geometrically idealized positions and constrained to ride on their parent atoms with d(C–H) = 0.82–1.06(4) Å, U iso(H) = 1.5 times U eq(C) and 1.2 times U eq(O).
3 Comment
Andrographolide, a diterpenoid lactone [4], can be obtained from the extract of traditional herb paniculata with extraordinary efficacy. Andrographolide and its derivatives are important bioactive compounds. They have good potential for applications in fields of pharmacology [5], [6], [7]. Therefore, the synthesis and modification of Andrographolide have always been a hot topic in the medical field.
The title compound contains one diterpenoid lactone, three hydroxyl, one oxygen-containing pentacyclic, and four methyl groups. The bond lengths and angles derived from the title structure are within normal ranges and consistent with those reported previously in similar structures [8–10]. The C=C bond was determined at the distance of 1.320(3) Å (C13–C14). The carbonyl group was confirmed by the distance of 1.200(3) Å (C17–O5), and the alcohol hydroxyl group was identified by the distance of 1.393(4) Å (C15–O3), respectively. The oxygen-containing pentacycle with C17–O4–C16 torsion angle of
Funding source: Guizhou Graduate Research Fund Project
Award Identifier / Grant number: YJSKYJJ[2021]165
Funding source: Key Disciplines of Traditional Chinese Medicine and Ethnic Medicine in Guizhou Province
Award Identifier / Grant number: QZYYZDXK(JS)-2021-03
Funding source: Guizhou province
Award Identifier / Grant number: gzwkj2022-232 and gzwkj2022-467
Funding source: Guizhou Provincial Science and Technology Projects
Award Identifier / Grant number: 404
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Author contributions: All the authors have accepted responsibility for the entire content of this submitted manuscript and approved submission.
-
Research funding: Guizhou Provincial Science and Technology Projects (Qian Ke He Zi ZK [2023] general 404 ), 2021 Guizhou Graduate Research Fund Project (Qian Jiao He YJSKYJJ[2021]165), Key Disciplines of Traditional Chinese Medicine and Ethnic Medicine in Guizhou Province during the 14th Five-Year Plan (QZYYZDXK(JS)-2021-03) and the projects of Guizhou province (Qian Jiao He KY Zi [2022]253, gzwkj2022-232 and gzwkj2022-467).
-
Conflict of interest statement: The authors declare no conflicts of interest regarding this article.
References
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© 2023 the author(s), published by De Gruyter, Berlin/Boston
This work is licensed under the Creative Commons Attribution 4.0 International License.
Articles in the same Issue
- Frontmatter
- New Crystal Structures
- Crystal structure of a polymorph of potassium picrate, C6H2KN3O7
- The crystal structure of (1E,2E)-1,2-bis(quinolin-2-ylmethylene)hydrazine, C20H14N4
- 5-Amino-2-chloro-4-fluoro-N-(N-isopropyl-N-methylsulfamoyl) benzamide, C11H15O3ClFN3S
- Crystal structure of trans-N 1,N 8-bis(2-cyanoethyl)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, C22H42N6
- The crystal structure of [N-{[2-(oxy)-4-methoxyphenyl](phenyl)methylidene}alaninato]-diphenyl-silicon(IV) – chloroform (1/1), C29H25NO4Si·CHCl3
- Crystal structure of tetracarbonyl-{μ-[N-(diphenylphosphanyl)-N,P,P-triphenylphosphinous amide]}-bis[μ-(phenylmethanethiolato)]diiron (Fe–Fe), C48H39Fe2NO4P2S2
- Crystal structure of baryte from Mine du Pradet (France)
- The crystal structure of [(2,2′-bipyridine-6-carboxylato-κ3 N,N,O)-(6-phenylpyridine-2-carboxylate-κ2 N,O)copper(II)] monohydrate, C23H17N3O5Cu
- Crystal structure of bis(μ-benzeneselenolato)-(μ-[N-benzyl-N-(diphenylphosphanyl)-P,P-diphenylphosphinous amide])-tetracarbonyl diiron (Fe–Fe), C47H37Fe2NO4P2Se2
- The crystal structure of diaqua-methanol-κ1 O- (3-thiophenecarboxylato-κO)-(2,2′-dipyridyl-κ2 N,N′)manganese(II) 3-thiophenecarboxylate, C21H22N2O7S2Mn
- Crystal structure of catena-poly[tetrakis(butyl)-μ2-2-((oxido(phenyl)methylene)hydrazineylidene)propanoato-κ4 O:O,O′,N-μ2-2-((oxido(phenyl)methylene)hydrazineylidene)propanoato-κ4 O,N,O′:N′-ditin(IV)], C34H50N6O6Sn2
- Crystal structure of 4-chloro-N′-[(1E)-(2-nitrophenyl)methylidene]benzohydrazide, C14H10ClN3O3
- The crystal structure of 3-(1′-deoxy-3′,5′-O-dibenzy-β-d-ribosyl)adenine dichloromethane solvate, C49H52Cl2N10O6
- The crystal structure of (Z)-4-amino-N′-(1-(o-tolyl)ethylidene)benzohydrazide, C16H17N3O
- The co-crystal structure of etoricoxib–phthalic acid (1/1), C18H15ClN2O2S·C8H6O4
- Crystal structure of (glycinto-κ 2 O,N ′)-[5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ 4 N,N ′,N ″,N ‴]nickel(II) perchlorate monohydrate C18H42ClN5NiO7
- The crystal structure of catena-poly[bis(1-ethylimidazole-k1 N)-(μ 2-benzene-1-carboxyl-3,5-dicarboxylato-κ 2 O, O′)zinc(II)], C19H20N4O6Zn
- Crystal structure of 3-(thiazol-2-ylcarbamoyl)-7-oxabicyclo[2.2.1]heptane-2-carboxylic acid, C11H12N2O4S
- Rietveld structure analysis of keatite, a rare, metastable SiO2 polymorph
- Crystal structure of catena-poly[(μ2-isophthalato-k3 O,O′:O″)(4-(4-pyridyl)-2,5-dipyrazylpyridine-k3 N,N′,N″)cobalt(II)] trihydrate C26H22N6O7Co1
- Crystal structure of 3,5–di-O-benzoyl-1,2-O-isopropylidene-α–D-ribose, C22H22O7
- The crystal structure of fac-tricarbonyl(6-bromo-2,2-bipyridine-κ2 N,N)-(nitrato-κO)rhenium(I), C13H7BrN3O6Re
- The crystal structure of (E)-N′-(4-hydroxy-3-methoxybenzylidene)-2-naphthohydrazide monohydrate, C19H18N2O4
- The crystal structure of 5,5′-diselanediyl-bis(2-hydroxybenzaldehyde), C14H10O4Se2
- The crystal structure of catena-poly[diaqua-m2-dicyanido-κ2 C:N-dicyanido-κ1 C-bis(4-(pyridin-4-yl)benzaldehyde-κ1N)iron(II)-platinum(II), C28H22N6O4PtFe
- Redetermination of the crystal structure of 5,14-dihydro-6,17-dimethyl-8,15-diphenyldibenzo(b,i)(1,4,8,11)tetra-azacyclotetradecine, C32H28N4
- Crystal structure of poly[(μ3-2-(3,5-dicarboxyphenyl) benzimidazole-6-carboxylato-κ4O:O:O′:O″)lead(II)] monohydrate, C16H10N2O7Pb
- The crystal structure of fac-tricarbonyl(2-pyridin-2-yl-quinoline-κ2 N,N′)-(pyrazole-κN)rhenium(I)nitrate, C20H14N4O3ReNO3
- Crystal structure of dibromo-dicarbonyl-bis(tricyclohexylphosphine)-osmium(II) dichloromethane solvate, C38H66Br2O2OsP2
- Crystal structure of poly[bis(μ 2-2,6-bis(1-imidazoly)pyridine-κ 2 N:N′)copper(II)] diperchlorate dihydrate, C22H22Cl2CuN10O10
- The crystal structure of fac-tricarbonyl(N-benzoyl-N,N-cyclohexylmethylcarbamimidothioato-κ2 S,O)-(pyridine-κN)rhenium(I), C23H24N3O4ReS
- Crystal structure of (E)-7-fluoro-2-(4-fluorobenzylidene)-3,4-dihydronaphthalen-1(2H)-one, C17H12F2O
- Synthesis and crystal structure of 1-((3R,10S,13S, 17S)-3-((2-methoxyphenyl)amino)-10,13-dimethylhexadecahydro-1H-cyclopenta[α]phenanthren-17-yl)ethan-1-one, C28H41NO2
- The crystal structure of fac-tricarbonyl((pyridin-2-yl)methanamino-κ2 N,N′)-((pyridin-2-yl)methanamino-κN)rhenium(I) nitrate, C15H16O3N4Re
- The crystal structure of (1-(pyridin-2-yl)-N-(pyridin-2-ylmethyl)-N-((1-(4-vinylbenzyl)-1H-benzo[d]imidazol-2-yl)methyl)methanamine-κ 4 N,N′,N″,N‴)tris(nitrato-kO,O′)-erbium(III), C29H27ErN8O9
- Crystal structure of tetracene-5,12-dione, C18H10O2
- Crystal structure of (3R,3aS,6R,6aR)-6-hexyl-3-methyltetrahydrofuro[3,4-b]furan-2,4-dione, C13H20O4
- The crystal structure of N′1,N′3-bis((E)-thiophen-2-ylmethylene)isophthalohydrazide monohydrate, C18H16N4O3S2
- Crystal structure of methyl ((4-aminobenzyl)sulfonyl)-L-prolinate, C13H18N2O4S
- Crystal structure of (E)-3-(3-methoxybenzylidene)benzofuran-2(3H)-one, C16H12O3
- Synthesis and crystal structure (E)-1-(4-bromo-2-hydroxyphenyl)-3-(dimethylamino)prop-2-en-1-one, C11H12BrNO2
- Synthesis and crystal structure of (S,E)-4-hydroxy-3-(2-((4aR,6aS,7R,10aS,10bR)-3,3,6a,10b-tetramethyl-8-methylenedecahydro-1H-naphtho[2,1-d][1,3]dioxin-7-yl)ethylidene)dihydrofuran-2(3H)-one, C23H34O5
- The crystal structure of N,N′-(1,2-phenylene)bis (2-((2-oxopropyl)selanyl)benzamide), C26H24N2O4Se2
- The crystal structure of 1-ethyl-2-nitro-imidazole oxide, C5H7N3O3
- The crystal structure of 2-(2-fluorophenyl)naphtho[2,1-d]thiazole, C17H10FNS
- Crystal structure of (E)-2,4-di-tert-butyl-6-(((2-fluorophenyl)imino) methyl)phenol, C21H26FNO
- Synthesis and crystal structure of 3-methyl-2-(methylthio)-4H-chromen-4-one, C12H12O2S
- Crystal structure of dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]dithiophene-5,10-dione, C14H4O2S4
- The crystal structure of dimethyl 2,2ʹ-((adamantane-1,3-diylbis(4,1-phenylene)) bis(oxy))diacetate, C28H32O6
- The crystal structure of N-(6-chloro-2-methyl-2H-indazol-5-yl)acetamide, C10H10ClN3O
- Crystal structure of triaqua-(5-bromoisophthalato-κ1 O)-(2,2′-bipyridine-κ2 N:N′)nickel(II) hydrate, C18H19BrN2NiO8
- The crystal structure of 2-amino-4-carboxypyridin-1-ium perchlorate, C6H7ClN2O6
- The crystal structure of catena-poly[5-aminonicotinic acid-k1 N-m2-bromido-copper(I)], Cu(C6N2H6O2)Br
- The crystal structure of 2,2-bis(3-methoxyphenyl)-1-tosyl-1,2-dihydro- 2λ4,3λ4 -[1,3,2]diazaborolo[4,5,1-ij]quinoline - dichloromethane (1/1)
- The crystal structure of catena-poly[bis(6-phenylpyridine-2-carboxylato-κ2 N,O)-(μ2-4,4′-bipyridne-κ2 N:N)cadmium(II)], C34H24N4O4Cd
- The crystal structure of 5,7-dinitropyrazolo[5,1-b]quinazolin-9(4H)-one, C10H5N5O5
- Crystal structure of rac-1,8-bis(2-carbamoylethyl)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, C22H46N6O2
- The crystal structure of (E)-N ′-(2-bromobenzylidene)-2-naphthohydrazide, C36H26Br2N4O2
- The crystal structure of 5-nitronaphthoquinone, C10H5NO4
- The crystal structure of (S, R p )-4–benzhydrylideneamino-12-(4-tert-butyl oxazolin-2-yl)[2.2]paracyclophane, C36H36N2O
- Synthesis and crystal structure of 2-(2-oxo-2-(o-tolyl)ethyl)-4H-chromen-4-one, C18H14O3
- Crystal structure of 2-(thiazol-2-yl)hexahydro-1H-4,7-epoxyisoindole-1,3(2H)-dione, C11H10N2O3S
- Crystal structure of N-(diaminomethylene)-1-(dimethylamino)-1-iminiomethanaminium dichloride, C4H13Cl2N5
- Crystal structure of poly[(μ3-3, 5-dichloro-2-hydroxy-benzoato-κ4 Cl,O:O′:O″) silver(I)], C7H3AgCl2O3
- The crystal structure of tetrakis(1-isopropylimidazole-κ1 N)-[μ2- imidazole-4,5-dicarboxylato-κ4 O,N,O′,N′)]- trioxido-divanadium, C29H41N10O7V2
- Crystal structure of catena-[(μ3-bromido)-(1H-1,2,4-triazol-1-yl)benzoato-κ1 N)copper(I)], C9H7BrCuN3O2
- The crystal structure of (E)-4-fluoro-N′-(1-(2-hydroxyphenyl)propylidene)benzohydrazide, C16H15FN2O2
Articles in the same Issue
- Frontmatter
- New Crystal Structures
- Crystal structure of a polymorph of potassium picrate, C6H2KN3O7
- The crystal structure of (1E,2E)-1,2-bis(quinolin-2-ylmethylene)hydrazine, C20H14N4
- 5-Amino-2-chloro-4-fluoro-N-(N-isopropyl-N-methylsulfamoyl) benzamide, C11H15O3ClFN3S
- Crystal structure of trans-N 1,N 8-bis(2-cyanoethyl)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, C22H42N6
- The crystal structure of [N-{[2-(oxy)-4-methoxyphenyl](phenyl)methylidene}alaninato]-diphenyl-silicon(IV) – chloroform (1/1), C29H25NO4Si·CHCl3
- Crystal structure of tetracarbonyl-{μ-[N-(diphenylphosphanyl)-N,P,P-triphenylphosphinous amide]}-bis[μ-(phenylmethanethiolato)]diiron (Fe–Fe), C48H39Fe2NO4P2S2
- Crystal structure of baryte from Mine du Pradet (France)
- The crystal structure of [(2,2′-bipyridine-6-carboxylato-κ3 N,N,O)-(6-phenylpyridine-2-carboxylate-κ2 N,O)copper(II)] monohydrate, C23H17N3O5Cu
- Crystal structure of bis(μ-benzeneselenolato)-(μ-[N-benzyl-N-(diphenylphosphanyl)-P,P-diphenylphosphinous amide])-tetracarbonyl diiron (Fe–Fe), C47H37Fe2NO4P2Se2
- The crystal structure of diaqua-methanol-κ1 O- (3-thiophenecarboxylato-κO)-(2,2′-dipyridyl-κ2 N,N′)manganese(II) 3-thiophenecarboxylate, C21H22N2O7S2Mn
- Crystal structure of catena-poly[tetrakis(butyl)-μ2-2-((oxido(phenyl)methylene)hydrazineylidene)propanoato-κ4 O:O,O′,N-μ2-2-((oxido(phenyl)methylene)hydrazineylidene)propanoato-κ4 O,N,O′:N′-ditin(IV)], C34H50N6O6Sn2
- Crystal structure of 4-chloro-N′-[(1E)-(2-nitrophenyl)methylidene]benzohydrazide, C14H10ClN3O3
- The crystal structure of 3-(1′-deoxy-3′,5′-O-dibenzy-β-d-ribosyl)adenine dichloromethane solvate, C49H52Cl2N10O6
- The crystal structure of (Z)-4-amino-N′-(1-(o-tolyl)ethylidene)benzohydrazide, C16H17N3O
- The co-crystal structure of etoricoxib–phthalic acid (1/1), C18H15ClN2O2S·C8H6O4
- Crystal structure of (glycinto-κ 2 O,N ′)-[5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane-κ 4 N,N ′,N ″,N ‴]nickel(II) perchlorate monohydrate C18H42ClN5NiO7
- The crystal structure of catena-poly[bis(1-ethylimidazole-k1 N)-(μ 2-benzene-1-carboxyl-3,5-dicarboxylato-κ 2 O, O′)zinc(II)], C19H20N4O6Zn
- Crystal structure of 3-(thiazol-2-ylcarbamoyl)-7-oxabicyclo[2.2.1]heptane-2-carboxylic acid, C11H12N2O4S
- Rietveld structure analysis of keatite, a rare, metastable SiO2 polymorph
- Crystal structure of catena-poly[(μ2-isophthalato-k3 O,O′:O″)(4-(4-pyridyl)-2,5-dipyrazylpyridine-k3 N,N′,N″)cobalt(II)] trihydrate C26H22N6O7Co1
- Crystal structure of 3,5–di-O-benzoyl-1,2-O-isopropylidene-α–D-ribose, C22H22O7
- The crystal structure of fac-tricarbonyl(6-bromo-2,2-bipyridine-κ2 N,N)-(nitrato-κO)rhenium(I), C13H7BrN3O6Re
- The crystal structure of (E)-N′-(4-hydroxy-3-methoxybenzylidene)-2-naphthohydrazide monohydrate, C19H18N2O4
- The crystal structure of 5,5′-diselanediyl-bis(2-hydroxybenzaldehyde), C14H10O4Se2
- The crystal structure of catena-poly[diaqua-m2-dicyanido-κ2 C:N-dicyanido-κ1 C-bis(4-(pyridin-4-yl)benzaldehyde-κ1N)iron(II)-platinum(II), C28H22N6O4PtFe
- Redetermination of the crystal structure of 5,14-dihydro-6,17-dimethyl-8,15-diphenyldibenzo(b,i)(1,4,8,11)tetra-azacyclotetradecine, C32H28N4
- Crystal structure of poly[(μ3-2-(3,5-dicarboxyphenyl) benzimidazole-6-carboxylato-κ4O:O:O′:O″)lead(II)] monohydrate, C16H10N2O7Pb
- The crystal structure of fac-tricarbonyl(2-pyridin-2-yl-quinoline-κ2 N,N′)-(pyrazole-κN)rhenium(I)nitrate, C20H14N4O3ReNO3
- Crystal structure of dibromo-dicarbonyl-bis(tricyclohexylphosphine)-osmium(II) dichloromethane solvate, C38H66Br2O2OsP2
- Crystal structure of poly[bis(μ 2-2,6-bis(1-imidazoly)pyridine-κ 2 N:N′)copper(II)] diperchlorate dihydrate, C22H22Cl2CuN10O10
- The crystal structure of fac-tricarbonyl(N-benzoyl-N,N-cyclohexylmethylcarbamimidothioato-κ2 S,O)-(pyridine-κN)rhenium(I), C23H24N3O4ReS
- Crystal structure of (E)-7-fluoro-2-(4-fluorobenzylidene)-3,4-dihydronaphthalen-1(2H)-one, C17H12F2O
- Synthesis and crystal structure of 1-((3R,10S,13S, 17S)-3-((2-methoxyphenyl)amino)-10,13-dimethylhexadecahydro-1H-cyclopenta[α]phenanthren-17-yl)ethan-1-one, C28H41NO2
- The crystal structure of fac-tricarbonyl((pyridin-2-yl)methanamino-κ2 N,N′)-((pyridin-2-yl)methanamino-κN)rhenium(I) nitrate, C15H16O3N4Re
- The crystal structure of (1-(pyridin-2-yl)-N-(pyridin-2-ylmethyl)-N-((1-(4-vinylbenzyl)-1H-benzo[d]imidazol-2-yl)methyl)methanamine-κ 4 N,N′,N″,N‴)tris(nitrato-kO,O′)-erbium(III), C29H27ErN8O9
- Crystal structure of tetracene-5,12-dione, C18H10O2
- Crystal structure of (3R,3aS,6R,6aR)-6-hexyl-3-methyltetrahydrofuro[3,4-b]furan-2,4-dione, C13H20O4
- The crystal structure of N′1,N′3-bis((E)-thiophen-2-ylmethylene)isophthalohydrazide monohydrate, C18H16N4O3S2
- Crystal structure of methyl ((4-aminobenzyl)sulfonyl)-L-prolinate, C13H18N2O4S
- Crystal structure of (E)-3-(3-methoxybenzylidene)benzofuran-2(3H)-one, C16H12O3
- Synthesis and crystal structure (E)-1-(4-bromo-2-hydroxyphenyl)-3-(dimethylamino)prop-2-en-1-one, C11H12BrNO2
- Synthesis and crystal structure of (S,E)-4-hydroxy-3-(2-((4aR,6aS,7R,10aS,10bR)-3,3,6a,10b-tetramethyl-8-methylenedecahydro-1H-naphtho[2,1-d][1,3]dioxin-7-yl)ethylidene)dihydrofuran-2(3H)-one, C23H34O5
- The crystal structure of N,N′-(1,2-phenylene)bis (2-((2-oxopropyl)selanyl)benzamide), C26H24N2O4Se2
- The crystal structure of 1-ethyl-2-nitro-imidazole oxide, C5H7N3O3
- The crystal structure of 2-(2-fluorophenyl)naphtho[2,1-d]thiazole, C17H10FNS
- Crystal structure of (E)-2,4-di-tert-butyl-6-(((2-fluorophenyl)imino) methyl)phenol, C21H26FNO
- Synthesis and crystal structure of 3-methyl-2-(methylthio)-4H-chromen-4-one, C12H12O2S
- Crystal structure of dithieno[2,3-d:2′,3′-d′]benzo[1,2-b:4,5-b′]dithiophene-5,10-dione, C14H4O2S4
- The crystal structure of dimethyl 2,2ʹ-((adamantane-1,3-diylbis(4,1-phenylene)) bis(oxy))diacetate, C28H32O6
- The crystal structure of N-(6-chloro-2-methyl-2H-indazol-5-yl)acetamide, C10H10ClN3O
- Crystal structure of triaqua-(5-bromoisophthalato-κ1 O)-(2,2′-bipyridine-κ2 N:N′)nickel(II) hydrate, C18H19BrN2NiO8
- The crystal structure of 2-amino-4-carboxypyridin-1-ium perchlorate, C6H7ClN2O6
- The crystal structure of catena-poly[5-aminonicotinic acid-k1 N-m2-bromido-copper(I)], Cu(C6N2H6O2)Br
- The crystal structure of 2,2-bis(3-methoxyphenyl)-1-tosyl-1,2-dihydro- 2λ4,3λ4 -[1,3,2]diazaborolo[4,5,1-ij]quinoline - dichloromethane (1/1)
- The crystal structure of catena-poly[bis(6-phenylpyridine-2-carboxylato-κ2 N,O)-(μ2-4,4′-bipyridne-κ2 N:N)cadmium(II)], C34H24N4O4Cd
- The crystal structure of 5,7-dinitropyrazolo[5,1-b]quinazolin-9(4H)-one, C10H5N5O5
- Crystal structure of rac-1,8-bis(2-carbamoylethyl)-5,5,7,12,12,14-hexamethyl-1,4,8,11-tetraazacyclotetradecane, C22H46N6O2
- The crystal structure of (E)-N ′-(2-bromobenzylidene)-2-naphthohydrazide, C36H26Br2N4O2
- The crystal structure of 5-nitronaphthoquinone, C10H5NO4
- The crystal structure of (S, R p )-4–benzhydrylideneamino-12-(4-tert-butyl oxazolin-2-yl)[2.2]paracyclophane, C36H36N2O
- Synthesis and crystal structure of 2-(2-oxo-2-(o-tolyl)ethyl)-4H-chromen-4-one, C18H14O3
- Crystal structure of 2-(thiazol-2-yl)hexahydro-1H-4,7-epoxyisoindole-1,3(2H)-dione, C11H10N2O3S
- Crystal structure of N-(diaminomethylene)-1-(dimethylamino)-1-iminiomethanaminium dichloride, C4H13Cl2N5
- Crystal structure of poly[(μ3-3, 5-dichloro-2-hydroxy-benzoato-κ4 Cl,O:O′:O″) silver(I)], C7H3AgCl2O3
- The crystal structure of tetrakis(1-isopropylimidazole-κ1 N)-[μ2- imidazole-4,5-dicarboxylato-κ4 O,N,O′,N′)]- trioxido-divanadium, C29H41N10O7V2
- Crystal structure of catena-[(μ3-bromido)-(1H-1,2,4-triazol-1-yl)benzoato-κ1 N)copper(I)], C9H7BrCuN3O2
- The crystal structure of (E)-4-fluoro-N′-(1-(2-hydroxyphenyl)propylidene)benzohydrazide, C16H15FN2O2