The new depsides
3,5-dichloro-2′-O-methylnorstenosporic acid (4),
5-chloro-2′-O-methylanziaic acid (5) and
3,5-dichloro-2′-O-methylnorhyperlatolic acid (6)
have been detected in the lichenLecanora lividocinerea
and the structures of these metabolites have been established by unambiguous
synthesis. In addition, the synthesis of the depside
3,5-dichloro-4-O-demethylplanaic acid (7) is described.
新的去硫化物
3,5-二氯-2′-O-甲基钨孢酸(4)、
5-chloro-2′-O-methylanziaic acid (5) 和
3,5-二氯-2′-O-甲基全氟辛酸 (6)
和 3,5-二氯-2′-O-甲基正过柿酸(6)。
这些代谢物的结构已通过明确的
合成。此外,在地衣中还合成了
3,5-dichloro-4-O-demethylplanaic acid (7) 的合成。