Eight new cembranoids from tobacco - structural elucidation and conformational studies
作者:Elisabeth Olsson、Jan-Eric Berg、Inger Wahlberg
DOI:10.1016/s0040-4020(01)80414-2
日期:1993.5
Eight new cembranoids have been isolated from an extract of flowers of Greek tobacco. They have been identified as (1S,2E,4S,R,7E,10R,11E)-2,7,11-cembratriene-4,6,10-triol (1), the corresponding (10S)-, (4R*)- and (4R*,10S*)-diastereomers (2–4), (1S*,2E,4R*,6R*,7E,10S*,11Z)-2,7,11-cembratriene-4,6,10-triol (5), (1S,2E,4S,6R,7E,11E)-4,6-dihydroxy-2,7,11-cembratrien-10-one (6), the corresponding (4R*)-epimer
从希腊烟草花的提取物中分离出了八种新的大麻素。它们被确定为(1 S,2 E,4 S,R,7 E,10 R,11 E)-2,7,11-cembratriene-4,6,10-triol(1),相应的是(10 S)-,(4 R *)-和(4 R *,10 S *)非对映体(2–4),(1 S *,2 E,4 R *,6 R *,7 E,10 S * ,11 Z)-2,7,11-cembratriene-4,6,10-triol(5),(1 S,2 E,4 S,6 R,7 E,11 E)-4,6-二羟基-2,7,11-cembratrien-10-one(6),相应的(4 R *) -epimer(7)和(1 S *,2 E,4 S *,7 E,10 S,11 E)-4,10-二羟基-2,7,11-cembratrien-6-one(8)与借助化学和光谱方法,二维核磁共振技术尤其有用。已经确定并