(4S)-3-苯甲氧羰基-2-氧代咪唑啉-4-羧酸叔丁酯 、 1-碘丁烷 在
氧化银(II) 作用下,
以
N,N-二甲基甲酰胺 为溶剂,
以6.7 g of tert.-butyl (4S)-1-n-butyl-3-benzyloxycarbonyl-2-oxo-imidazolidine-4-carboxylate are obtained as colorless syrup的产率得到tert.-butyl (4S)-1-n-butyl-3-benzyloxycarbonyl-2-oxo-imidazolidine-4-carboxylate
We describe synthesis and evaluation of a series of cyclic urea derivatives with hydroxylethylamine isostere. Modification of P3, P1, and P2' and combination of SAR display a >100-fold increase in potency with good cellular activity (IC(50)=0.15microM) relative to the previously reported compound 3.