通过循环添加和环扩张合成1,3-氨酸和1,4-氨酸衍生物
Márta Palkó1, Nóra Becker1, Edit Wéber2,3
1Institute of Pharmaceutical Chemistry, University of Szeged, Eötvös u. 6, H-6720 Szeged, Hungary.
International journal of molecular sciences
|December 11, 2025
概括
研究人员开发了一种新的短合成方法,用于罕见的N,S-异环环,包括1,3-thiazines和1,4-thiazepines. 这种方法有效地创建了具有高 diastereoselectivity 的多个奇拉中心,通过先进的光谱和晶体技术得到证实.
科学领域:
- 药用化学 医学化学
- 有机合成 有机合成
- 异环化学 异环化学
背景情况:
- 含有1,3-thiazine环的非cephem药物并不常见,尽管已知相关衍生物的生物活性.
- 1,4- thiazepine 衍生药物也很少见,但具有显著的生物潜力.
- 由于其药理相关性,N,S-异环的合成仍然是一个感兴趣的领域.
研究的目的:
- 开发一种N,S-异环,特别是1,3-氨酸和1,4-氨酸的多功能和高效的合成途径.
- 探索一个简短的合成路径 (1-3 步骤) 使用已建立的文献方法.
- 为了产生具有潜在治疗应用的新型性化合物.
主要方法:
- 一种三组分反应,涉及环烯,胺和化物,形成5,6-二-4H-1,3-thiazines.
- 在Staudinger的基-胺循环添加中,使用chloroketene产生β-lactam融合的1,3-thiazinanes.
- 通过甲氧化处理进行环扩张以产生4,5,6,7-四水-1,4-thiazepines.
主要成果:
- 合成途径成功生成了5,6-二-4H-1,3-氨酸,随后产生了4,5,6,7-四-1,4-氨酸.
- 这一过程创造了3-5个新的性中心,随着周环反应,在循环添加中确保了高的二选择性.
- 所有合成化合物的立体化学被明确地确定使用2D NOESY和单晶X射线衍射.
结论:
- 已经建立了一个简洁有效的合成策略,用于构建复杂的N,S-异环,包括有价值的1,3-thiazine和1,4-thiazepine支架.
- 这种方法能够以 diastereoselectively 方式生成多个 chiral 中心,这为新奇的 chiral 药物发现提供了一个有前途的途径.
- 详细的立体化学分析证实了合成方法的可靠性和精度.
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