Stereochemistry of reactions of the inhibitor/substrates l- and d-β-chloroalanine with β-mercaptoethanol catalysed by l-aspartate aminotransferase and d-amino acid aminotransferase respectively
作者:Benjamin Adams、Kreingkrai Lowpetch、Faye Thorndycroft、Sheena M. Whyte、Douglas W. Young
DOI:10.1039/b508199h
日期:——
Two members of the α-family of PLP-dependent enzymes, L-aspartate aminotransferase and D-amino acid aminotransferase, have been shown to catalyse β-substitution of L- and D-β-chloroalanine respectively with β-mercaptoethanol, reactions typical of the β-family of PLP-dependent enzymes. The reaction catalysed by L-aspartate aminotransferase has been shown to occur with retention of stereochemistry, a typical outcome for reactions catalysed by β-family enzymes. There are also indications that the reaction catalysed by D-amino acid aminotransferase may involve retention of stereochemistry. Both enzymes have been shown to catalyse exchange at C-3 when the appropriate enantiomer of β-chloroalanine is the substrate.
[EN] 6-BRIDGED HETEROARYLDIHYDROPYRIMIDINES FOR THE TREATMENT AND PROPHYLAXIS OF HEPATITIS B VIRUS INFECTION<br/>[FR] HÉTEROARYLDIHYDROPYRIMIDINES PONTÉES EN POSITION 6 POUR LE TRAITEMENT ET LA PROPHYLAXIE D'UNE INFECTION PAR LE VIRUS DE L'HÉPATITE B
申请人:HOFFMANN LA ROCHE
公开号:WO2014184328A1
公开(公告)日:2014-11-20
The invention provides novel compounds having the general formula: wherein R1, R2, R3 and R4 are as defined in the description and in the claims, as well as or pharmaceutically acceptable salts, or tautomerism isomers, or enantiomers, or diastereomers thereof. The invention also contains compositions including the compounds and methods of using the compounds for the treatment or prophylaxis of hepatitis B virus infection.
AbstractAus Glycin und L‐Serin, die durch mehrere, offenbar noch unbekannte, einfache Derivate charakterisiert wurden, konnten verschiedene für die Synthese von Verbindungen der Lycomarasmin‐ und der Aspergillomarasmin‐ und der Aspergillomarasmin‐B‐Reihe erfolgversprechende Zwischenprodukte (z. B. IIIc, VII, VIII) hergestellt werden.