Phenyl group
Studies of hexahelicene bonded phases for the HPLC resolution of enantiomers
... increasingdistanceof the phenyl group from the chiral centre may imply that for chiral resolution to be effective, the phenyl group hasto interact with the hexahelicenechiral stationary [r] ...
196
BIOLOGICAL EVALUATION OF AROMATIC COMPOUNDS AS β-LACTAMASE INHIBITORS
... Michaelis-Menten constant constitutes the starting points for determining the inhibition and wether the attack of the serine residue in the enzyme is on the carbonyl gorup in the chalcone. The substituents on ...
6
Ethyl 4 oxo 2,6 diphenylpiperidine 3 carboxylate
... The preferred conformation of the piperidine ring has been explained by chemical and physical methods, and in most of the derivatives it is found to exist in a chair conformation (Ramalingam et al. , 1979). Also, ...
9
CYCLODEXTRIN A GIFT TO PHARMACEUTICAL WORLD REVIEW
... prostaglandins, β-cyclodextrin is very useful for complexing molecules containing a phenyl group, a group encompassing many drugs, and γ-cyclodextrin can be used for complexation of larg[r] ...
5
Stereoelectronic effects in the Stereoselectivity of the Diels Alder Reactions: Reactions of Aminoanthracenes with N phenylmaleimide
... methyl group appears at ...methyl group experiences the shielding effect of the N-phenyl group, which would be absent in the anti ...N-phenyl group experience deshielding effect ...
7
SYNTHESIS AND EVALUATION OF ANTIOXIDANT ACTIVITY OF SEMICARBAZONE DERIVATIVES
... the phenyl group of aldehydic and acetophenic moiety of chalcone is substituted with –OH group (Compound 8, 11, 12, 18, 21, 22) the compounds exhibited better activity in comparison to substitution ...
5
5 Amino 4 methylsulfonyl 1 phenyl 1H pyrazole
... sized as a potential antitumour agent and a single-crystal X-ray analysis was undertaken to determine the three- dimensional arrangement of the putative pharmacophoric groups. The central pyrazole ring is exactly planar ...
7
1 (2,4 Dinitrophenyl) 3 (2 hydroxy 5 methylphenyl)pyrazole 4 carboxaldehyde
... carboxaldehyde group is twisted by ...carboxaldehyde group and the primed phenyl group with respect to the pyrazole ...the phenyl rings is 11.2 (1)°. The dihedral angles between the ...
10
The controversial reaction mechanism of Stevens rearrangement: A review
... retention of configuration. A tight ion-pair has been proposed instead as an intermediate in such The reaction mechanism of the Stevens Rearrangement as first believes through the “Ionic –Pair which is deplicated as ...
7
Autonomy, de facto and de jure
... first phenyl to furan substitution in DB 75 to provide DB 832 does not greatly increase the excitation and emission wavelengths but essentially maintains the emission ...second phenyl group with a ...
99
Investigations in the Refractrometric Study of S-trizinothiocarbamides in Dioxane-water Systems
... –methyl group on thiocarbamido ...-ethyl group is present on thiocarbamido ...-phenyl group is present on thiocarbamido ...thiocarbamido group is bulkier like –phenyl or –ethyl, ...
6
3 (4 Chlorophenyl) 5 phenyl 4,5 dihydro 1,3 oxazole
... unsubstituted phenyl ring as the flap atom. The chlorinated phenyl group is nearly in-plane with the four coplanar atoms of the heterocycle and the corresponding mean planes enclosing an angle of ...
8
4′ [2 (Trifluoromethyl)phenyl] 2,2′:6′,2′′ terpyridine
... a phenyl group, itself substituted in an ortho -position by a bulky trifluoromethyl ...bulky group and the 3′(5′)-proton on the central pyridine ring are expected to force the 4′-substituent to ...
11
Tricarbonyl[η4 2 phenyl 4 (3 phenylallylidene) 4H oxazol 5 one]iron(0)
... the phenyl substi- tuent of the lactone group with the carbonyl O atom of the lactone ring of a neighbouring molecule and vice ...the phenyl group of the allylidene chain with a terminal ...
8
1 [(1 Benzyl 1H 1,2,3 triazol 4 yl)methyl]indoline 2,3 dione
... the indoline residue and the terminal phenyl group. In the crystal, molecules are linked by C—H N hydrogen bonds into tapes parallel to the b axis. The tapes are linked together by – interactions between ...
7
trans 5,6a Dihydro 5 phenylisoindolo[1,2 b]benz[1,3]oxazepin 11 one
... the phenyl group about the exocyclic C11ÐC19 ...the phenyl substituent occupies a pseudo-equatorial ...the phenyl group has also been observed for the cis isomer (Lokaj et ...
14
Effect of electric field on the polarised infrared spectra of smectic liquid crystals
... for phenyl, core and chiral carbonyl groups for each sm ectic ...for phenyl, core and chiral carbonyl groups for Sm C * phase is observed at the angles ...O group for each smectic phase are not ...
179
(2 tert Butyl 3 phenyl 2,3 dihydroisoxazole 4,5 diyl)bis(phenylmethanone)
... the phenyl and tert butyl groups be trans to each other, which agrees with the stereochemistry of the Z phenyl-N-tert-butylnitrone starting material based on the mechanism of the reaction (Eberson et ...
12
NOVEL MONOCYCLIC β LACTUM MOLECULES: DESIGNED AND CHARACTERIZED AS POSSIBLE ANTIBACTERIAL AGENTS
... The comparison of inhibition value of the compound 2b also shows that the introduction of chloro group moderately enhanced the antibacterial activity. On the contrary, the comparison of inhibition value between ...
8
The Electrophilic Substitution of Sydnones: the Reaction with 3 Aryl 4 Phenylsydnones, 3 Arylmethylsydnones and 3 Phenylethylsydnone
... the phenyl ring(B) ...methoxyl group on the N(3)-phenyl ring in order to determine how an electron-donor compensates for this electron-withdrawing ...methyl group, the nitro groups are mainly ...
8