Practical Peptide Synthesis Mediated by a Recyclable Hypervalent Iodine Reagent and Tris(4-methoxyphenyl)phosphine
作者:Chi Zhang、Shan-Shan Liu、Bo Sun、Jun Tian
DOI:10.1021/acs.orglett.5b02045
日期:2015.8.21
1,4-dione (p-BTFP-iodosodilactone, 1a) was synthesized and demonstrated to be an efficient hypervalent iodine(III) reagent for the synthesis of dipeptides from various standard amino acids, including sterically hindered amino acids, in good to high yields within 30 min in the presence of tris(4-methoxyphenyl)phosphine. In addition, the combined system of 1a/(4-MeOC6H4)3P was used to synthesize the
6-(3,5-二(三氟甲基)苯基)-1 ħ,4 ħ -2aλ 3 -ioda -2,3- dioxacyclopenta [喜]茚-1,4-二酮(p -BTFP-iodosodilactone,1A)中的溶液在三(4-甲氧基苯基)膦的存在下,在30分钟内以高至高收率合成并证明是一种有效的高价碘(III)试剂,用于从各种标准氨基酸(包括位阻氨基酸)合成二肽。另外,使用1a /(4-MeOC 6 H 4)3 P的组合系统以保护形式合成五肽亮氨酸-脑啡肽。值得注意的是1a 反应后可以很容易地再生。