High potency dipeptide sweeteners. 1. L-Aspartyl-D-phenylglycine esters
摘要:
Twenty esters of L-aspartyl-D-phenylglycine, as well as two substituted analogues, an o-fluoro and a p-hydroxy-phenylglycine ester, were prepared. The L-aspartyl-D-phenylglycine (-)-alpha- and (+)-beta-fenchyl esters had the highest sweetness potency at 1200 and 3700 times that of sucrose, respectively. The high potency of these sweeteners is surprising as the phenyl group occupies a position previously believed to accommodate only much smaller groups.
Diastereoselective oxidation of substituted thietanes and stereoselective oxidation of their sulfoxides
作者:Richard S. Glass、Waheguru Pal Singh、Bruce A. Hay
DOI:10.1016/s0040-4039(00)78190-1
日期:1994.8
Oxidation of substituted thietanes 1a, b, and 6 with m-chloroperoxybenzoicacid preferentially gives the corresponding cis-sulfoxides with modest diastereoselectivity. Selective oxidation of the trans over the cis diastereomeric pairs of sulfoxides 2a, 3a; 2b, 3b; 7, 8 occurs with moderate selectivity with m-chloroperoxybenzoicacid. The basis for these selectivities is hydrogen bonding between the
Alpha-L-aspartyl-D-phenylglycine esters and amides useful as high intensity sweeteners
申请人:THE PROCTER & GAMBLE COMPANY
公开号:EP0168112A2
公开(公告)日:1986-01-15
alpha-L-Aspartyl-D-phenylglycine esters and amides are disclosed to be useful as high intensity sweeteners. These compounds can be used to sweeten a variety of foods, beverages and other oral products.