Synthesis of Modified Polyoxins by Reaction of Uridine-5′-aldehyde with Trimethylsilyl Cyanide and Amino Acids
作者:José Fiandor、María-Teresa García-López、Federico G. De Las Heras、Paloma P. Méndez-Castrillón
DOI:10.1055/s-1987-28141
日期:——
The synthesis of six modified polyoxin derivatives containing an alkyl amino group replacing the peptide bond has been accomplished, in a one pot reaction, by condensation of 2′,3′-O-isopropylideneuridine-5′-aldehyde with trimethylsily cyanide, boron trifluoride etherate and an amino acid, in methanol. The reaction affords stereoselectively the diastereoisomer having at O-5′ the same absolute configuration as the natural polyoxins.
通过 2′,3′-O-异亚丙基尿苷-5′-甲醛与三甲基硅氰化物、三氟化硼醚和氨基酸在甲醇中的缩合反应,合成了六种含有烷基氨基取代肽键的改性聚氧乙烯醚衍生物。该反应可立体选择性地生成非对映异构体,其 O-5′ 的绝对构型与天然多毒素相同。