期刊
GEOLOGY
卷 42, 期 2, 页码 155-158出版社
GEOLOGICAL SOC AMER, INC
DOI: 10.1130/G34975.1
关键词
-
类别
资金
- Oil Industry Development Board, Government of India
The traditional organic geochemical view suggests that polar triterpenoids are degraded easily during fossilization of organic matter. For the first time, we show that dammarane-type tetracyclic polar triterpenoids are preserved in the geosphere. Hydroxydammarenone (20-hydroxy-24-dammaren-3-one), a typical constituent of extant Dipterocarpaceae (an angiosperm tree family) derived dammar resin, is preserved in Miocene amber. The oxidative products of hydroxydammarenone (i.e., 20,24-epoxy-25-hydroxydammaran-3-one, and hexakisnor-dammaran-3,20-dione) are found in both Miocene and Eocene ambers. The presence of hydroxydammarenone in Miocene amber clearly depicts that natural biotriterpenoid markers can be preserved in the geosphere for tens of millions of years. This result demonstrates that the dammarane-type oxygenated compounds, which are extensively used in archaeological studies, can also be utilized as diagnostic markers for paleochemosystematics.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据