Chiral Syntheses of Dihydroxyamino Acid Moieties of AI-77-B and Calyculins from D-Glucosamine.
作者:Katsuo SHINOZAKI、Kazuhiro MIZUNO、Hideaki WAKAMATSU、Yukio MASAKI
DOI:10.1248/cpb.44.1823
日期:——
Manipulation of cis (4S, 5S)-4, 5-disubstituted 2-oxazolidinones (4, 5), derived easily from D-glucosamine (1) as a chiral pool, including degradation of the C6-carbon and/or one-carbon homologation at the C1-position allowed chiral syntheses of (2S, 3S)-dihydroxy-(4S)-amino acid moieties (6-8), which are important structural components of a gastroprotective substance, AI-77-B, and a group of antitumor substances, calyculins.
对来自D-葡萄糖胺(1)作为手性源的顺式(4S, 5S)-4, 5-取代的2-噁唑烷酮(4, 5)进行操作,包括C6碳的降解和/或C1位置的一碳同 homologation,使得可以手性合成(2S, 3S)-二羟基-(4S)-氨基酸部分(6-8),这些部分是胃保护物质AI-77-B和一组抗肿瘤物质calyculins的重要结构组分。