Poststatin, a New Inhibitor of Prolyl Endopeptidase. IV. The Chemical Synthesis of Poststatin.
作者:MAKOTO TSUDA、YASUHIKO MURAOKA、MACHIKO NAGAI、TOMIO TAKEUCHI、TAKAAKI AOYAGI
DOI:10.7164/antibiotics.49.287
日期:——
Total synthesis of poststatin was achieved by both liquid phase and solid phase methods. In both methods, the (2R, 3S)-3-amino-2-hydroxyvaleric acid moiety was incorporated into protected pentapeptides, and was oxidized to (S)-3-amino-2-oxovaleric acid (postine). Deprotection of the oxidized pentapeptides gave a specimen identical with natural poststatin in physico-chemical properties and prolyl endopeptidase inhibitory activity.
通过液相和固相两种方法实现了后司他丁的全合成。在这两种方法中,(2R, 3S)-3-氨基-2-羟基戊酸分子都被加入到受保护的五肽中,并被氧化成(S)-3-氨基-2-氧代戊酸(postine)。对氧化后的五肽进行脱保护处理后,得到的试样在理化性质和脯氨酰内肽酶抑制活性方面与天然 poststatin 相同。