Pancreatic lipases hydrolyze glycerol phenylbutyrate to release PBA from the glycerol backbone. PBA undergoes β-oxidation to PAA, which is conjugated with glutamine in the liver and in the kidney through the enzyme phenylacetyl-CoA: L-glutamine-N-acetyltransferase to form PAGN.
◉ Summary of Use during Lactation:No information is available on the clinical use of sodium phenylbutyrate or the combination of sodium phenylbutyrate and taurursodiol during breastfeeding. Both sodium phenylbutyrate and taurursodiol are highly protein bound and therefore unlikely to enter milk in clinically important amounts. If sodium phenylbutyrate with or without taurursodiol is required by the mother, it is not a reason to discontinue breastfeeding. Until more data become available, these products should be used with caution during breastfeeding, especially while nursing a newborn or preterm infant. Monitoring the breastfed infant for neurotoxicity (excessive sedation, vomiting) during maternal therapy may be advisable.
◉ Effects in Breastfed Infants:Relevant published information was not found as of the revision date.
◉ Effects on Lactation and Breastmilk:Relevant published information was not found as of the revision date.
Glycerol phenylbutyrate is a prodrug in which phenylbutyrate (PBA) is released from the glycerol backbone by lipases in the gastrointestinal tract. PBA then undergoes beta-oxidtion to form PAA. When a single oral dose of 2.9 mL/m2 of Glycerol phenylbutyrate is given to fasting adult subjects, the pharmacokinetic parameters are as follows: Tmax: PBA = 2 hours; PAA = 4 hours; PAGN = 4 hours. Cmax: PBA = 37.0 µg/mL; PAA = 14.9 µg/mL; PAGN = 30.2 µg/mL. In healthy subjects, the hydrolysis of glycerol phenylbutyrate is incomplete, but to what extent is unknown. When glycerol phenylbutyrate is given to adult UCD patients, maximum plasma concentrations at steady state (Cmaxss) of PBA, PAA, and PAGN occurred at 8 h, 12 h, and 10 h, respectively, after the first dose in the day. Intact glycerol phenylbutyrate was not detectable in plasma in UCD patients.
Glycerol phenylbutyrate is mainly excreted as PAGN in the urine (68.9% in adults and 66.5% in pediatric UCD patients). PAA and PBA represented minor urinary metabolites, each accounting for <1% of the administered dose of PBA.
[EN] PROCESS FOR THE PREPARATION OF GLYCEROL PHENYLBUTYRATE<br/>[FR] PROCÉDÉ DE PRÉPARATION DE PHÉNYLBUTYRATE GLYCÉROL
申请人:LUPIN LTD
公开号:WO2015063659A1
公开(公告)日:2015-05-07
The present invention relates to the process for the preparation of glycerol phenylbutyrate (I) by reacting phenylbutyryl chloride (II) with glycerol (III) in presence of organic base in C1-C5 chlorinated solvent. Glycerol phenylbutyrate (I) prepared according the process of the present invention is having HPLC purity >99%.
The present invention refers to Glycerol Phenyl Butyrate Esters, including esters and amides, their stereoisomers, enantiomers, racemates as well as the acids, bases or salts thereof, medicaments comprising them, as well as their use in cancer therapy and other pharmaceutical applications.
wherein
one of R1, R2 or R3 is
[EN] PROCEDURE FOR THE PREPARATION OF 4-PHENYL BUTYRATE AND USES THEREOF<br/>[FR] TECHNIQUE DE PRÉPARATION DE 4-PHÉNYLBUTYRATE ET SES UTILISATIONS
申请人:HORIZON THERAPEUTICS LLC
公开号:WO2017205515A1
公开(公告)日:2017-11-30
Provided is a process for preparing 4-phenyl-1-butyric acid, comprising: reacting 4-phenyl-1-butanol with sodium chlorite, a nitroxyl radical catalyst and sodium hypochlorite in an organic solvent and a phosphate buffer; and quenching the reaction with sodium sulfite to produce 4-phenyl-1-butyric. Also provided is 4-phenyl-1-butyric acid prepared by such a process.
Procedure for the preparation of 4-phenyl butyrate and uses thereof
申请人:Horizon Therapeutics, LLC
公开号:US10329236B2
公开(公告)日:2019-06-25
Provided is a process for preparing 4-phenyl-1-butyric acid, comprising: reacting 4-phenyl-1-butanol with sodium chlorite, a nitroxyl radical catalyst and sodium hypochlorite in an organic solvent and a phosphate buffer; and quenching the reaction with sodium sulfite to produce 4-phenyl-1-butyric. Also provided is 4-phenyl-1-butyric acid prepared by such a process.