The solid-phase synthesis was completed of the heptapeptide D-Leu-D-Tyr-L-Asn-Hpg-Hpg-L-Tyr-Dhpg, a putative intermediate in vancomycin biosynthesis, where Dhpg = (S)-3,5-dihydroxyphenylglycine and Hpg = (R)-4-hydroxyphenylglycine, using 2-chlorotrityl resin, benzyl side-chain protecting groups for the aromatic residues, and Alloc chemistry for chain elongation; the heptapeptide was obtained in 16% yield with the correct relative and absolute configuration.
利用 2-
氯三苯基膦树脂、芳香残基的苄基侧链保护基团和用于链延伸的 Alloc
化学,完成了七肽 D-Leu-D-Tyr-L-Asn-Hpg-Hpg-L-Tyr-Dhpg 的固相合成,Dhpg = (S)-3,5-二羟基苯甘
氨酸,Hpg = (R)-
4-羟基苯甘
氨酸是
万古霉素生物合成过程中的一种假定中间体;七肽的收率为 16%,相对构型和绝对构型均正确。