Malyngamide 3 and Cocosamides A and B from the Marine Cyanobacterium <i>Lyngbya majuscula</i> from Cocos Lagoon, Guam
作者:Sarath P. Gunasekera、Chivas S. Owle、Rana Montaser、Hendrik Luesch、Valerie J. Paul
DOI:10.1021/np1008015
日期:2011.4.25
Malyngamide 3 (1) and cocosamides A (2) and B (3) were isolated from the lipophilic extract of a collection of Lyngbyamajusculafrom Cocos Lagoon, Guam. The planar structures of compounds 1−3 were determined by spectroscopic methods. The absolute configuration of 1 was determined by modified Mosher’s method, NOESY data, and comparison with lyngbic acid (4). The absolute configurations of 2 and 3 were
Malyngamide 3 ( 1 ) 和椰油酰胺 A ( 2 ) 和 B ( 3 ) 是从来自关岛 Cocos Lagoon的Lyngbya majuscula集合的亲脂性提取物中分离出来的。化合物的平面结构1 - 3通过光谱方法测定。的绝对构型1是由改性Mosher氏方法,NOESY数据,并比较lyngbic酸(测定4)。2和3的绝对构型通过对映选择性 HPLC 分析确定,并与密切相关的化合物 Pitipiptolide A ( 5 ) 进行比较。化合物1 -3显示对MCF7乳腺癌和HT-29结肠癌细胞的弱细胞毒性。