Stereospecific Synthesis of a Novel Farnesyl Protein Transferase Inhibitor Valinoctin A and Its Analogues.
作者:MAKOTO TSUDA、YASUHIKO MURAOKA、TOMIO TAKEUCHI、RYUICHI SEKIZAWA、KAZUO UMEZAWA
DOI:10.7164/antibiotics.49.1031
日期:——
(2S, 3R)-3-Amino-2-hydroxyoctanoic acid was synthesized by Curtius rearrangement of an azide derivative of (S)-malic acid. Total syntheses of valinoctin A and its analogues were achieved by a coupling of (2S, 3R)-3-amino-2-hydroxyoctanoic acid moiety with L-valine or several other amino acids moieties. 2S configuration of 3-amino-2-hydroxyoctanoic acid moiety was found to be important for the inhibitory activity and the L-valine moiety of valinoctin A was exchangeable with other L-amino acids.
(2S,3R)-3-氨基-2-羟基辛酸是通过(S)-苹果酸的叠氮衍生物的 Curtius 重排合成的。通过(2S,3R)-3-氨基-2-羟基辛酸与 L-缬氨酸或其他几种氨基酸的偶联,实现了缬氨辛 A 及其类似物的全合成。研究发现,3-氨基-2-羟基辛酸的 2S 构型对抑制活性很重要,而缬氨辛 A 的 L-缬氨酸可与其他 L-氨基酸交换。