ENVELOPE CONFORMATION
![5 (p Tolylsulfonyl) 3 oxa 5 azatricyclo[5 2 1 04,8]decane](data:image/gif;base64,R0lGODlhAQABAIAAAP///wAAACH5BAEAAAAALAAAAAABAAEAAAICRAEAOw==)
5 (p Tolylsulfonyl) 3 oxa 5 azatricyclo[5 2 1 04,8]decane
... an envelope conformation, with the flap atom, C9, displaced by ...an envelope conformation, with the flap atom, C12, lying ...boat conformation, in which atoms C12 and O3 are displaced ...
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N tert Butoxycarbonyl α (2 fluorobenzyl) L proline
... adopts an envelope conformation with the disordered com- ponents of the methylene C atom, with site occupancies of 0.896 (7) and 0.104 (7), being the flap on either side of the mean plane involving the ...
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6 Methyl 2 pyridone pentahydrate
... channels of hydrogen-bonded water molecules (Fig. 2). Each water molecule serves twice as hydrogen-bond donor and twice as acceptor, making four hydrogen bonds in total. This pseudo-tetrahedral arrangement means that the ...
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(1′S,12′R,13′S,17′S) 15′,15′ Dimethyl 1,2 dihydro 11′,14′,16′,18′ tetraoxa 7′ azaspiro[indole 3,8′ pentacyclo[10 6 0 02,9 03,7 013,17]octadecane] 2,10′ dione
... chair conformation. One of the pyrrolidine rings adopts an envelope conformation on the N atom, while the other has a twist conformation; the ‘butterfly’ angle between their mean planes is ...
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2 [1′ (Benzyloxy)spiro[indane 1,2′ pyrrolidine] 5′ yl]acetonitrile
... In the same way the other five member ring shows a puckering amplitude q2= 0.247 2 and pseudo-rotation phase angle φ2= -173.7 5 adopting an envelope conformation E with the atom C9 below[r] ...
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(S) 2 Amino 1 (pyrrolidinium 2 ylmethyl)pyridinium dibromide
... 2Br , the pyrrolidinium ring displays an envelope conformation, with the flap N atom lying 0.564 (6) A ˚ from the mean plane of the remaining four C atoms. The attached methylene C atom, which connects the ...
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(6bR,10aS) 6b,10a Dimethyl 10,10a dihydro 9H fluoranthene
... molecules which are separated by normal van der Waals distances. The methyl groups attached at the junction of the acenaphthylene and cyclohexyl rings are cis with respect to each other. The naphthalene ring in the ...
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3 Methyl 1,5 diphenyl 4,5 dihydro 1H pyrazole
... adopts a shallow envelope conformation, with the C atom bearing the phenyl group displaced by 0.298 (2) A ˚ from the other atoms (r.m.s. deviation = 0.015 A ˚ ). The dihedral angles between the four near ...
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Ethyl 23 benzyl 8,11,14 trioxa 23,28,29 triazapentacyclo[19 7 1 02,7 015,20 022,27]nonacosa 2,4,6,15(20),16,18,21,26 octaene 26 carboxylate
... The tetrahydropyrimidine ring has an envelope conformation with the chiral C atom as the flap, whereas the tetrahydro- pyridine ring adopts a distorted chair conformation. Two amino groups are ...
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1 O Benzyl 2,3 O isopropylidene 6 O tosyl α L sorbofuranose
... In the title compound (Fig. 2), the central furanose ring adopts a slightly twisted envelope conformation with C4 forming the flap. The O1 and C5 substituents are positioned pseudo-equatorially, while the ...
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5′′ Benzylidene 5 chloro 1′,1′′ dimethyl 4′ phenyldispiro[indoline 3,2′ pyrrolidine 3′,3′′ piperidine] 2,4′′ dione
... half-chair conformation where the C atom connected to the spiro-C atom lies ...an envelope conformation with the flap atom being the methylene C ...
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1,3 Dibenzoyl 5,8 dimethoxy 2 phenyl 5,8 dihydroindolizine
... The bond lengths and angles in (I) are within normal ranges (Allen et al., 1987). In the title structure (Fig. 1), the indolizine moiety is not completely planar, the six-membered ring being distorted towards an ...
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(3R,3aR,6R,6aR) Hexahydrofuro[3,2 b]furan 3,6 diyl dibenzoate
... different positions (occupancy factor refined to 0.735 (9) for the A position and 0.265 (9) for the B position). Both disordered O1/C1/C2/C3A/C4 and O1/C1/C2/C3B/C4 rings adopt an envelope conformation with ...
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Indole 3 spiro N methyl 2′ pyrrolidine 3′ spiro 9′′ anthracene 2,10′′ dione
... boat conformation, the pyrrolidine ring adopts an envelope conformation and the ®ve-membered ring in the oxindole moiety is slightly distorted from ...
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Ethyl 3β hydroxypregna 5,17(20) dien 21 oate
... 8β,9α-half-chair conformation on ring B. Ring D adopts the 14α- envelope conformation previously observed in the dehydroandrosterone parent (Verma et ...this conformation minimizes steric ...
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Crystal structure of 10a hydroxy 9 (3 nitrophenyl) 3,6 diphenyl 3,4,5,6,7,8a,9,10a octahydro 1H xanthene 1,8(2H) dione
... an envelope conformation, while the bilateral cyclohexene and cyclohexane rings adopt a half-boat conformation and a chair conformation, ...
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1 [(6 Chloropyridin 3 yl)methyl] 10 nitro 1,2,3,5,6,7,8,9 octahydro 5,9 methanoimidazo[1,2 a]azocin 5 ol
... an envelope conformation with the methylene C atom as the flap; the imidazolidine ring also displays an envelope conformation with a methylene C atom as the ...
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4′ (p Methoxyphenyl) 1′ methyl 1H indole 3 spiro 2′ pyrrolidine 3′ spiro 1′′ cyclopentane 2(3H),2′′ dione
... The indole moiety of the title compound, C23H24N2O3, is planar; but the pyrrolidine ring adopts an envelope conformation.. The conformation is stabilized by intramolecular CÐ H O intera[r] ...
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Crystal Structure of Dengue Virus Type 1 Envelope Protein in the Postfusion Conformation and Its Implications for Membrane Fusion
... DEN-1 sE was crystallized in the postfusion conformation. This was unexpected because the protein’s solvent was not acidified in the presence of lipid membranes, a treatment that is required to convert prefusion ...
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HIV-1 gp41 Residues Modulate CD4-Induced Conformational Changes in the Envelope Glycoprotein and Evolution of a Relaxed Conformation of gp120
... native conformation, Env predominantly occupies a closed structure, in which the gp120 variable loops and extensive surface glycosylation shield much of the Env core ...Env conformation is often referred to ...
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