摘要
A new halogenated biindole and a new apo-carotenone have been isolated from the ethanolic extract of the green alga Chaetomorpha basiretorsa Sethcell. On the basis of chemical and spectroscopic methods including 2D NMR technique, their structures have been elucidated as 4,4′-dichloro-5,5′-dibromo-7,7′-dimethoxy-2,2′-bi-1H-indole and 1′S*,4′R*-8-(4′-hydroxy-2′,6′,6′- trimethylcyclohex-2-enyl)-6-methyloct-3E,5E,7E-trien-2-one, respectively.
基金
supported by national 863 project(Grant No.2004AA625030,2001AA620503)
NNSFC(Grant No.20432030)
Key Innovative Project of the Academy(Grant No.KZCX3-SW-215).
关键词
Green
alga
Chaetomorpha
basiretorsa
Sethcell
4
4′-dichloro-5
5′-dibromo-7
7′-di-
methoxy-2
2′-bi-1H-indole
1′S*
4′R*-8-(4′-hydroxy-2′
6′
6′-trimethylcyclohex-2-enyl)-6-methyl-
oct-3E
5E
7E-trien-2-one.
Green alga, Chaetomorpha basiretorsa Sethcell, 4,4′-dichloro-5,5′-dibromo-7,7′-di- methoxy-2, 2′-bi-1H-indole, 1′S*,4′R*-8-(4′-hydroxy-2′,6′,6′-trimethylcyclohex-2-enyl)-6-methyl- oct-3E,5E,7E-trien-2-one.
