Confirmation of the absolute (3R,3′S,6′R)-configuration of (all-E)-3′-epilutein
Confirmation of the absolute (3R,3′S,6′R)-configuration of (all-E)-3′-epilutein
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DOI：
10.1002/hlca.200490195
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发表时间：
2004-01-01
影响因子：
1.8
通讯作者：
Tóth, G
中科院分区：
文献类型：
--
作者：
Molnár, P;Deli, J;Tóth, G
利用圆二色性（CD）光谱对3'-脱毛蛋白(2)和6'-脱毛蛋白(8)的异构体（全e）进行了区分，建立了不同来源（天然和半合成）脱毛蛋白样品的绝对构型，包括从酢浆草中获得的2个样品。因此，比较叶黄素(1)和叶黄素(2)样品的CD数据。我们的结果明确地证实了所有蛋白样品的（3R, 3s,6'R）结构。对化合物2进行了完整的表征，并首次发表了其C-13-NMR数据。
Circular dichroism (CD) spectroscopy was used to distinguish between the isomeric (all-E)-configured 3'-epilutein (2) and 6'-epilutein (8) to establish the absolute configuration of epilutein samples of different (natural and semisynthetic) origin, including samples of 2 obtained from thermally processed sorrel. Thus, the CD data of lutein (1) and epilutein samples (2) were compared. Our results unambiguously confirmed the (3R,3'S,6'R)configuration of all epilutein samples. Compound 2 was thoroughly characterized, and its C-13-NMR data are published herewith for the first time.