Pig Liver Acetone Powder Research Articles

Biogenic silver nanoparticles of antibacterial activities for poly-herbal extracts in novel medicine

We are developed in the green activity of silver nitrate nanoparticles and are used materials of Mentha (M), Azadirachta indica (A) leaves, and have been implemented as the agent for stabilizing the poly-leaf extracts (LE) / pig liver acetone powder (PL) with complexes. An optimal extract absorption of LE/PL has been used in 500 mg then 200 mg individually, by attraction about 0.841%. Since the PL satisfied with an energetic mediator of the MA leaf extracts are 92.1667 ± 0.3626%. The antibacterial movement on made silver nanoparticles is Escherichia coli, then Staphylococcus aureus. These samples are calculated to additional the antimicrobial movement counter to verified in a pathogenic way in a gram of positive, negative with microbial and fungiform straining. It was made with fast production to Natural Garden Pest Control (non-toxic method) for the mixture of silver nanoparticles are showed hopeful to the movement of all the established microbial straining. The trend is improved through an augmented quantity echelon.

ChemInform Abstract: Pig Liver Acetone Powder (PLAP) as Biocatalyst: Enantioselective Synthesis of trans-2-Alkoxycyclohexan-1-ols.

ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Chemo-Enzymatic Synthesis and Determination of the Absolute Configuration of Both Enantiomers of Methyl trans-5-Oxo-2-pentylpyrrolidine-3-carboxylate Precursors of the Aza Analogues of (+)- and (−)-Methylenolactocin

Enantiomerically pure methyl esters of (+)-(2R,3S)- and (−)-(2S,3R)-5-oxo-2-pentylpyrrolidine-3-carboxylic acid with 99% and 98% ee were obtained by enzymatic resolution of the corresponding racemic mixture using α-chymotrypsin and pig-liver acetone powder, respectively. Their absolute configurations were established by chemical methods, i.e., conversion of the trans-γ-lactam moiety to the corresponding γ-lactone of known configuration. The favorable interactions between the trans-γ-lactam and α-chymotrypsin were rationalized by molecular-mechanics calculations, which suggest a different situation for the cis-diastereoisomer.

Enantioselective synthesis of (1R,2R)- and (1S,2S)-2-nitroxycyclohexan-1-ols

A simple and convenient methodology has been developed for the synthesis of (1R,2R)- and (1S,2S)-2-nitroxycyclohexan-1-ols in enantiomerically pure from via pig liver acetone powder (PLAP) mediated hydrolysis of racemic trans-1-acetoxy-2-nitroxycyclohexane.

ChemInform Abstract: Synthesis of Chiral α‐Aryl‐α‐hydroxyacetic Acids: Substituent Effects in Pig Liver Acetone Powder (PLAP) Induced Enantioselective Hydrolysis.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

ChemInform Abstract: Pig Liver Acetone Powder (PLAP) Mediated Enantioselective Synthesis of Cyclic Ketones.

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Reactions of 2-phenylthio-2-cycloalkenones and 2-[phenyl(thiomethyl)]-2-cycloalkenones: Synthesis of some useful chiral and achiral intermediates

The allyl acetates derived from 2-phenylthio-2-cyclopentenone, 2-phenylthio-2-cyclohexenone, 2-phenylthio(methyl)]-2-cyclopentenone and 2-[phenylthio(methyl)]-2-cyclohexenone have been hydrolysed by pig liver acetone powder to obtain the corresponding alcohols in optically pure form. Palladium catalysed alkylations with diethyl malonate have been found to take place with the allyl acetates having a vinyl sulfide moiety whereas 2-phenylthio-2-cyclopentenone and 2-[phenylthio(methyl)]-2-cyclohexenone are transformed into some highly functionalised sulfur containing intermediates.

Synthesis of chiral α-aryl-α-hydroxyacetic acids: Substituent effects in pig liver acetone powder (PLAP) induced enantioselective hydrolysis

Pig liver acetone powder (PLAP) catalyzed hydrolysis of alkyl α-acetoxy-α-arylacetates produces alkyl ( S)- α-aryl- α-hydroxyacetates in 23–80% enantiomeric purities. Enantioselectivity is dependent on the ester group of O-acetylmandelates. Substitution on the aromatic ring results in inferior selectivities. Only acetate group is hydrolyzed by PLAP while the ester functionality is found to be completely intact.

A convenient enantioselective synthesis of trans-2-aryloxycyclohexan-1-ols using pig liver acetone powder (PLAP) as biocatalyst

Pig liver acetone powder (PLAP) has been used as a biocatalyst for enantioselective hydrolysis of racemic trans-1-acetoxy-2-aryloxycyclohexannes to produce the resulting (R,R)-2-aryloxycyclohexan-1-ols upto >99% enantiomeric purities. (R,R)-Selectivity in this hydrolysis of racemic trans-2-aryloxycyclohexyl acetates was explained on the basis of Jones' three dimensional active site-model.

Biocatalytic Approach to Optically Active Baylis-Hillman Reaction Products

Pig liver acetone powder (PLAP) catalyzes enantioselective hydrolysis of racemic acetates of Baylis-Hillman Reaction products.

Selective Enzymatic Hydrolysis of Phenolic Acetates

Phenolic acetates are selectively hydrolyzed in the presence of alkyl acetates, methyl esters and cinnamates with pig liver acetone powder (PLAP).

Pig liver acetone powder (PLAP) as biocatalyst: Enantioselective synthesis of trans-2-alkoxycyclohexan-1-ols

Pig liver acetone powder (PLAP) enantioselectively hydrolyses trans-1-acetoxy-2-alkoxycyclohexanes 1a–6a in biphasic medium (ether and phosphate buffer) to provide the required (1R,2R)-2-alkoxycyclohexan-1-ols in 61–82% enantiomeric purities.

Enzymatic resolution of hindered secondary alcohols: Efficient access to a new simplified chiral auxiliary

2,2-Diphenylcyclopentanol, an efficient chiral auxiliary which bears only one stereogenic center, as well as some related hindered secondary alcohols, were resolved by means of pig liver acetone powder (PLAP) and horse liver acetone powder (HLAP).

Enantioselective synthesis using crude enzymes

Abstract

Synthesis of Chiral 1-Arylalkan-1-ols Using Crude Enzymes

Enantioselective hydrolysis of racemic 1-acetoxy-1-aryl-alkanes has been examined by two selected enzymes, crude pig liver acetone powder and crude goat liver acetone powder, providing 1-arylalkan-1-ols in high optical purities.

ChemInform Abstract: Enantioselective Hydrolysis of Racemic Acetates of Homoallyl Alcohols by Crude Pig Liver Acetone Powder (PLAP).

AbstractChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a “Full Text” option. The original article is trackable via the “References” option.

Enantioselective Hydrolysis of Racemic Acetates of Homoallyl Alcohols by Crude Pig Liver Acetone Powder (PLAP)

Abstract Racemic acetates of homoallyl alcohols have been enantio-selectively hydrolyzed by crude pig liver acetone powder (PLAP) to produce the corresponding alcohols in 56–72% optical purities.

ChemInform Abstract: Practical Enzymatic Resolution of Chiral Auxiliaries‐Enantiomerically Pure trans‐2‐Phenylcyclohexanol and trans‐2‐(α‐Cumyl)cyclohexanol.

AbstractCopper(I) catalyzed Grignard reaction of compound (II) and cyclohexene oxide (I) yields the racemic trans‐alcohol (III) which is separated by enantioselective saponification of its acetate (IV) using commercially avaible PLAP (pig liver acetone powder), producing pure enantiomeres (‐)‐(III) and (+)‐(III).

An enzymatic method for TLC detection and determination of fenitrothion in water

A simple enzymatic method is described for field TLC detection and determination of fenitrothion as fenitrooxon in water, with pig liver acetone powder as enzyme source. By this method, fenitrothion can be detected as fenitrooxon at ng levels and amounts ranging from 5 to 50 ng can be estimated.

Thin Layer Chromatographic Determination of Methyl Parathion as Paraoxon by Cholinesterase Inhibition

A simple, sensitive, and rapid method is described for the quantitative estimation of nanogram amounts of methyl parathion (O, O-dimethyl O-p-nitrophenyl phosphorothioate) as methyl paraoxon (O,O-dimethyl O-p-nitrophenyl phosphate) on thin layer chromatograms. Methyl paraoxon is detected by pig liver acetone powder cholinesterase inhibition, using p-nitrobenzenediazoniumfluoroborate as the chromogenic reagent. Commercial pig liver acetone powder is more advantageous than raw liver sources because it is readily available and can be preserved indefinitely. About 0.1 ng methyl parathion can be detected, and amounts from 5 to 50 ng can be quantitatively estimated.