Abstract: A new linoleic acid derivative, was isolated from the lichen Sulcaria virens together with 12 known compounds. The structure of the new compound was determined as 9, 10-O-isopropyllidene -(12 Z)- en-octadecaoic acid (1) by spectroscopic analysis. Other 12 known compounds were ( 9 Z, 12 Z ) -octadecadienoic acid (2), evernic acid (3 ), ( R )- usnic acid (4), vulpinic acid (5), atranorin (6), virensic acid (7), abieslactone (8), 3α-hydroxylanosta-7, 24-dien-26, 23 R-olide (9), taraxerol (10), taraxerone (11), 5α, 8α-epidioxy -( 22 E, 24 R )-ergosta-6, 22-dien-3β-ol (12 ), 2, 2′-tetrahydrosqualene (13).

Key words: Lichen

摘要： 从地衣绿槽枝衣( Sulcaria virens) 中分离得到一个新的亚油酸异丙叉衍生物, 通过波谱学方法包括2D-NMR 确定其化学结构为: 9, 10-O-异丙叉基- (12 Z)-十八碳烯酸(1) 。同时还得到其它12 个已知化合物:( 9 Z, 12 Z )-十八碳二烯酸(2), 扁枝衣二酸(3), ( R ) -松萝酸(4), 枕酸甲酯( 5), 黑茶渍素(6) , virensic acid ( 7), abieslactone (8), 3α-羟基羊毛甾-7, 24-二烯-26, 23 R-内酯(9), 蒲公英赛醇(10 ), 蒲公英赛酮 ( 11 ), (22 E , 24 R )-5α, 8α-过氧麦角甾-6, 22-二烯-3β-醇(12) 和2, 2′-四氢角鲨烯(13)。

关键词: 地衣, 绿槽枝衣, 化学成分, 亚油酸衍生物