[PDF] Top 20 Crystal structure of (±) (7RS,8SR) 7 methyl 1,4 dioxaspiro[4 5]decane 7,8 diol
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Crystal structure of (±) (7RS,8SR) 7 methyl 1,4 dioxaspiro[4 5]decane 7,8 diol
... The spiro-fused cyclo- hexane ring shows a chair ...the crystal, the O— H O hydrogen bond involving the equatorial hydroxy group connects the molecules into a zigzag chain with a C(5) motif running ... See full document
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Crystal structure of methyl 6 methoxy 11 (4 methoxyphenyl) 16 methyl 14 phenyl 8,12 dioxa 14,15 diazatetracyclo[8 7 0 02,7 013,17]heptadeca 2(7),3,5,13(17),15 pentaene 10 carboxylate
... 2-[(2-formyl-6-methoxyphenoxy)- methyl]-3-(4-methoxyphenyl)acrylate (0.356g, 1mmol) and 3-methyl-1-phenyl-1H-pyrazol-5-one ...g, 1 mmol) was placed in a round-bottomed flask and ... See full document
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Crystal structure of (5′S,8′S) 3 (2,5 dimethylphenyl) 8 methoxy 3 nitro 1 azaspiro[4 5]decane 2,4 dione
... solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: OLEX2 (Dolomanov et ... See full document
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Crystal structure of 7 hydroxy 8 [(4 methylpiperazin 1 yl)methyl] 2H chromen 2 one
... the crystal, a C—H O hydrogen bond generates a C(4) chain motif running along the c ...chain structure is stabilized by a C—H ...sheet structure parallel to the bc ... See full document
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5 Bromo 2 (4 fluorophenyl) 7 methyl 3 phenylsulfinyl 1 benzofuran
... (Fig. 1), the benzofuran unit is essentially planar, with a mean deviation of ...pendant 4-fluorophenyl and phenyl rings are 1.50 (8) and ...the crystal structure ...(Table 1) ... See full document
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8 Oxa 1 aza 7 phenylbicyclo[5 2 1]decane 9,10 dione
... Bicyclic imides with a bridgehead N atom were proposed by Smissman as potential stereoselective anticonvulsants (Smissman et al., 1964) and the synthesis of the first examples of this class of compounds (nicknamed ... See full document
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3 (4 Chlorophenyl) 7 methyl 4 (4 methylphenyl) 1 oxa 2,7 diazaspiro[4 5]dec 2 en 10 one
... 1,3-Dipolar cycloaddition of nitrile oxides to alkenes and alkynes affords isoxazoles and isoxazolines (Torssell, 1988). Apart from exhibiting important biological activities such as antiviral (Diana et al. , 1985), ... See full document
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3′ Isopropyl 8′,8′ dimethyl 2 benzofuran 1 spiro 7′ bicyclo[4 2 0]octa 1′(6′),2′,4′ trien 3 one
... The first 50 frames of data were recollected for a decay correction. The decay correction was applied simultaneously with the absorption correction in SADABS. No formal measure of the extent of decay is printed out by ... See full document
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4′ (4 Methoxyphenyl) 1′ methyl 4′′,5′′,6′′,7′′ tetrahydro 1H indole 3 spiro 2′ pyrrolidine 3′ spiro 2′′ (thiazolo[3,2 a]pyrimidine) 2(3H),3′′(2′′H) dione
... molecular structure of (I) is shown in Fig. 1. There are two spiro junctions in the molecule which consists of a planar 2-oxindole ring, a pyrrolidine ring in an envelope conforma- tion and a ... See full document
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Crystal structure of 4 methyl 2 oxo 2H chromen 7 yl ferrocenecarboxylate
... mmol), 1-ethyl-3-(dimethylaminopropyl)carbodimide hydrochloride (EDCI) (0.89 g, 4.5 mmol) and N , N -dimethylamino- pyridine (DMAP) (0.26 g, 2.2 mmol) were added into a 50 ml round bottom flask. Then the reaction ... See full document
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Crystal structure of 7′ (4 chlorophenyl) 2′′ (4 methoxyphenyl) 7′,7a',7′′,8′′ tetrahydro 1′H,3′H,5′′H dispiro[indoline 3,5′ pyrrolo[1,2 c]thiazole 6′,6′′ quinoline] 2,5′′ dione and an unknown solvent
... molecule B. In both molecules, the cyclohexanone ring of the isoquinoline unit has a half-chair conformation. In the pyrrolothiazole ring system, the pyrrolo ring in molecule A has a twisted conformation on the N—C fused ... See full document
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tert Butyl (7R) 7 [(4S) 2,2 dimethyl [1,3]dioxolan 4 yl] 1,4 dioxa 8 azaspiro[4 5]decane 8 carboxylate
... Compound (I) was prepared according to the following procedure: to a solution of tert-butyl (7R)-7-[(1S)-1,2-dihydroxyethyl]-1,4-dioxa-8- azaspiro[4.5]decane-8-carboxylate (Badorrey et ... See full document
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Crystal structures of two chiral piperidine derivatives: 1 [(1R) 2 hydroxy 1 phenylethyl]piperidin 4 one and 8 [(1S) 1 phenylethyl] 1,4 dioxa 8 azaspiro[4 5]decane 7 thione
... forms reported for piperidin-2-one (known as -valerolatcam): microwave spectroscopy indicated that for -valerolatcam, two conformers are stabilized in the gas phase, the half-chair form and the twist form (Kuze et al., ... See full document
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10′′ (4 Chlorobenzylidene) 5′′ (4 chlorophenyl) 4′ (2,4 dichlorophenyl) 1′ methyl 2,3,2′′,3′′,7′′,8′′,9′′,10′′ octahydro 1H,5′′H,6′′H indole 3 spiro 2′ pyrrolidine 3′ spiro 2′′ cyclohepteno[1,2 d]thiazolo[3,2 a]pyrimidine 2,3′′ dione
... and 5-(4-chloro)phenyl-10-(4-chloro)benzylidene-2-(2,4-di- chloro)benzylidene-2,3,6,7,8,9-hexahydro-5H,10H-cyclo- ...two spiro junctions link a planar 2-oxindole ring, a pyrrolidine ring in an ... See full document
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Crystal structure of methyl 2 (7 hydroxy 2 oxo 2H chromen 4 yl)acetate
... 2-(7-Hydroxy-2-oxo-2H-chromen-4-yl) acetic acid (220 mg, 1 mmol) was dissolved in methanol (15 ml), and a few drops of sulfuric acid were added. The resulting reaction mixture was refluxed for 3 h. ... See full document
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5 Amino 4 (4 dimethylaminophenyl) 2 (4 methoxyphenyl) 7 (pyrrolidin 1 yl) 1,6 naphthyridine 8 carbonitrile
... Naphthyridine derivatives have a wide range of biological activities, such as anti-in¯ammatory, anticonvulsant (Balogh et al., 1986), insecticidal (Takeuchi & Hamada, 1975), anti- tumour (El-Subbagh et al., 1999), ... See full document
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3 [(7 Acetoxy 4 methylcoumarin 8 yl)methyl]sydnone
... Data collection: COLLECT (Nonius, 2000); cell re®nement: DENZO±SMN (Otwinowski & Minor, 1997); data reduction: DENZO±SMN and SCALEPACK (Otwinowski & Minor, 1997); program(s) used to solve structure: SIR92 ... See full document
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7 Methyl 5 [(4 methylbenzene)sulfonyl] 2H,5H [1,3]dioxolo[4,5 f]indole: crystal structure and Hirshfeld analysis
... The Hirshfeld surfaces calculated for (I) were performed in accord with a recent report on a related organic molecule (Zukerman-Schpector et al., 2017) and provide an explanation of the influence of short interatomic ... See full document
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SPECTROPHOTOMETRIC ANTIOXIDANT BIOASSAY AND MOLECULAR MODELING STUDIES OF ETHYL 4 SUBSTITUTED 1, 4, 5, 6, 7, 8 HEXAHYDRO 2, 7, 7 TRIMETHYL 5 OXOQUINOLINE 3 CARBOXYLATE DERIVATIVES
... In the final AM1 and PM3 modelled Eq- 2 and Eq- 4 respectively, the contribution of the physico- chemical parameters shown graphically in contribution charts (Graph 1 and Graph 2). The activity decrease ... See full document
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1 Methyl 1 azonia 3,5 diaza 7 phosphatricyclo[3 3 1 1]decane 7 oxide triiodide
... Geometry . All e.s.d.'s (except the e.s.d. in the dihedral angle between two l.s. planes) are estimated using the full covariance matrix. The cell e.s.d.'s are taken into account individually in the estimation of ... See full document
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