N-(Coumarin-3-ylcarbonyl)benzotriazole has been coupled with free aminoacids, N-terminal-protected lysines and dipeptides to afford fluorescent aminoacids and dipeptides (76-89% yield) with retention of original chirality. N α - and N e -Coumarin-labeled- lysines are obtained by simple, two-step procedures. N α -Cbz- N e -(Coumarin-3-ylcarbonyl)- L-lysine is demonstrated to be an optically active
N-(Coumarin-3-ylcarbonyl)benzotriazole 已与游离氨基酸、N-末端保护的赖氨酸和二肽偶联,以提供荧光氨基酸和二肽(产率 76-89%),并保留原始手性。N α - 和 N e -香豆素标记的赖氨酸通过简单的两步程序获得。N α -Cbz- N e -(Coumarin-3-ylcarbonyl)-L-lysine 被证明是一种光学活性荧光标记,用于在溶液相合成中标记氨基酸。
Fluorescent labeling of peptides on solid phase
作者:Alan R. Katritzky、Megumi Yoshioka、Tamari Narindoshvili、Alfred Chung、Jodie V. Johnson
DOI:10.1039/b811693h
日期:——
N
α-Fmoc-Nε-[(7-methoxycoumarin-4-yl)acetyl]-L-lysine (Nα-Fmoc-L-Lys(Mca)-OH) 3 is conveniently prepared by benzotriazole methodology (52% over two steps). N-Acylbenzotriazoles Mca-Bt 2, Nα-Fmoc-L-Lys(Mca)-Bt 4, coumarin-3-ylcarbonyl (Cc)-Bt 5, Nα-Fmoc-L-Lys(Cc)-Bt 7 and Nα-(Cc)-L-Lys(Fmoc)-Bt 9 enable the efficient microwave enhanced solid-phase fluorescent labeling of peptides.