Ulongapeptin, a Cytotoxic Cyclic Depsipeptide from a Palauan Marine Cyanobacterium <i>Lyngbya </i>sp.
作者:Philip G. Williams、Wesley Y. Yoshida、Michael K. Quon、Richard E. Moore、Valerie J. Paul
DOI:10.1021/np030050s
日期:2003.5.1
Ulongapeptin (1), a cyclic depsipeptide, was isolated from a Palauan marine cyanobacterium Lyngbya sp. The gross structure was elucidated through one-dimensional TOCSY experiments and other spectroscopic techniques. The absolute and relative stereochemistry of the beta-amino acid, 3-amino-2-methyl-7-octynoic acid (AMO), in 1 was determined by synthesis of the saturated alpha-alkyl-beta-amino acid and
Ulongapeptin(1),一种环状十肽,是从帕劳岛海洋蓝藻Lyngbya sp。分离得到的。通过一维TOCSY实验和其他光谱技术阐明了总体结构。β-氨基酸3-amino-2-methyl-7-octynoic acid(AMO)在1中的绝对和相对立体化学是通过合成饱和的α-烷基-β-氨基酸和Marfey分析确定的四氢-1的酸水解产物。Ulongapeptin(1)对KB细胞具有细胞毒性,IC(50)值为0.63 microM。