- Efficient synthesis of 1β-O-acyl glucuronides via selective acylation of allyl or benzyl d-glucuronate
-
Acyl glucuronides are key metabolites for many carboxylic acid-containing drugs, notably those of the non-steroidal anti-inflammatory class. In the processes of drug safety assessment and new drug development, it is essential that acyl glucuronides, if formed in vivo, should be made conveniently available for bioevaluation. We recently showed that selective acylation of allyl glucuronate is a promising method for the synthesis of these metabolites in good yield and with excellent β-anomeric selectivity. We now give fuller details of the allyl ester method and further report that benzyl glucuronate performs at least equally well in the acylation step, offering the advantage of very mild deprotection by catalytic transfer (or conventional) hydrogenation. Depending on the compatibility of other functional groups, as discussed below, this will be the method of choice for many acyl glucuronide syntheses. The value of the method is demonstrated in particular by the synthesis of several acyl glucuronides that are known metabolites of important drugs.
- Bowkett, Elizabeth R.,Harding, John R.,Maggs, James L.,Park, B. Kevin,Perrie, Jennifer A.,Stachulski, Andrew V.
-
p. 7596 - 7605
(2008/02/08)
-
- Synthesis of 1-β-O-acyl glucuronides of diclofenac, mefenamic acid and (S)-naproxen by the chemo-selective enzymatic removal of protecting groups from the corresponding methyl acetyl derivatives
-
Using a straightforward chemo-enzymatic procedure, 1-β-O-acyl glucuronides of three non-steroidal anti-inflammatory drugs, diclofenac (DF)5, mefenamic acid (MF)6 and (S)-naproxen(NP)7, were prepared. Caesium salts of these carboxylic acid drugs reacted wi
- Baba, Akiko,Yoshioka, Tadao
-
p. 3303 - 3310
(2008/09/17)
-
- Synthesis of urine drug metabolites: Glucuronosyl esters of carboxymefloquine, indoprofen, (S)-naproxen, and desmethyl (S)-naproxen
-
A general procedure for the synthesis of 1-O-acyl-β-D-glucuronic acids using the benzyl 1-O-trichloroacetimidoyl-2,3,4-tri-O-benzyl-D- glucopyranuronate 6 as donor is exemplified by the synthesis of the urine metabolites of (S)-naproxen, desmethyl (S)-naproxen, indoprofen, and carboxymefloquine. The key intermediate benzyl 2,3,4-tri-O-benzyl-D- glucopyranuronate 5 is easily accessible in four steps (29%) from the peracetylated β-D-glucuronic acid 1. Copyright
- Lahmann, Martina,Bergstroem, Moa,Turek, Dominika,Oscarson, Stefan
-
p. 123 - 132
(2007/10/03)
-
