Accumulation of intracellular sorbitol, the reduced product of glucose, catalyzed by aldose reductase (AR) (EC 1.1.1.21), is thought to be the cause of the development of diabetic complications. Our attention is focused on finding compounds which inhibit AR without significantly inhibiting aldehyde reductase (ALR) (EC 1.1.1.2). The uracil or 2,4-dioxoimidazolidine skeleton having the benzothiazolyl or 4-chloro-3-nitrophenyl group as an aryl part indicated not only extremely high AR inhibitory activity but also AR selectivity. The ratio of IC50(ALR)/IC50(AR) of 3-[(5-chlorobenzothiazol-2-yl)methyl]-1,2,3,4-tetrahydro-2,4-dioxopyrim-idine-1-acetic acid (47d) was more than 17 500. The uracil skeleton with the benzothiazolyl moiety seemed to be the best combination for selective AR inhibition.
Synthesis of complex δ-acetylenic amino acids as potential multisubstrate adduct inhibitors of methyltransferases
作者:Mark R. Burns、James K. Coward
DOI:10.1016/0968-0896(96)00139-3
日期:1996.9
of the nucleoside-containing amino acids, a potential multisubstrateadductinhibitor of catechol O-methyltransferase was synthesized via this route. Unfortunately, the sensitivity to acid of 5'-deoxy, 5'-carbanucleosides prevented successful completion of the synthesis of a second nucleoside-containing delta-amino acid as a possible inhibitor of phenethanolamine N-methyltransferase.
Herein, we report the first synthesis of two recently discovered, prenylated 2-thiouridine derivatives, 5-methylaminomethyl-S-geranyl-2-thiouridine (mnm5geS2U) and 5-carboxymethylaminomethyl-S-geranyl-2-thiouridine (cmnm5geS2U). S-Geranylated 2-thiouridines were obtained by S-alkylation of the parent (c)mnm5S2U nucleosides suitably protected at their C5-alkylamino function. Comparative physicochemical
There are provided compounds having a superior PHD2 inhibitory effect that are represented by general formula (I′):
(in the above-mentioned general formula (I′),
W, Y, R2, R3, R4, and Y4 are as described hereinabove), or pharmaceutically acceptable salts thereof.