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南方红豆杉种子中的六种新的紫杉烷二萜。云南省南方红豆杉和南方红豆杉
Journal of Natural Products ( IF 3.3 ) Pub Date : 1999 Aug , DOI: 10.1021/np990106b Qing-wen Shi 1 , Takayuki Oritani 1 , Takeyoshi Sugiyama 1 , Ryo Murakami 1 , Heng-qiao Wei 1
Journal of Natural Products ( IF 3.3 ) Pub Date : 1999 Aug , DOI: 10.1021/np990106b Qing-wen Shi 1 , Takayuki Oritani 1 , Takeyoshi Sugiyama 1 , Ryo Murakami 1 , Heng-qiao Wei 1
Affiliation
从红豆杉种子中分离出六个新的紫杉烷二萜类化合物和三个已知的2(3-→20)类二十烷醇类化合物。南方红豆杉和云南红豆杉。它们的结构被确定为2alpha,20-dihydroxy-9alpha-acetoxytaxa-4(20),11-dien-13-one(1),5alpha-cinnamoyloxy-7beta,10beta,13alpha-triacetoxy-2(3-> 20 )aeotaxa-2alpha-ol-4(20),11-dien-9-one(2),5alpha-cinnamoyloxy-10beta,13alpha-diacetoxy-2(3-> 20)abeotaxa-2alpha,7beta-diol-4 (20),11-dien-9-one(3),5alpha-肉桂酰氧基-2alpha,7beta,10beta,13alpha-tetraacetoxy-2(3-> 20)abeotaxa-4(20),11-dien-9-一(4),7-O-乙酰紫杉碱A(5),2alpha,7beta,10beta,13alpha-tetraacetoxy-5alpha-phenylisoserinatoxy-2(3-> 20)abeotaxa-4(2 0),11-dien-9 -一(6),5-O-乙酰紫杉碱M(7),5alpha-羟基-2alpha,7beta,10beta,13alpha-tetraacetoxy-2(3-> 20)abeotaxa-4(20),11-dien-9 -一(8),基于1D和2D NMR光谱和2alpha,5alpha-dihydroxy-7beta,10beta,13alpha-triacetoxy-2(3-> 20)abeotaxa-4(20),11-dien-9-one(9)分析。化合物1,是从中华三叶草中分离得到的一种新化合物。mairei是具有4,11-二烯单元的紫杉烷的罕见实例,它被认为是类紫杉醇生物合成中的重要中间体。化合物2-4、6和7是新的化合物,它们是从云南天竺葵中分离得到的,也提供了已知的化合物5、8和9。
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更新日期:2017-01-31
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