Pentacyclic triterpenoid ketones in peat from Gannan Marsh,China  

作　　者：DUAN YiLanzhou Institute of Geology, Chinese Academy of Sciences, Lanzhou 730000, China 

出　　处：《Chinese Science Bulletin》2001年第17期1433-1436,共4页

基　　金：the Important Direction Projects of Knowledge Innovation in Resource and Environment Fields, Chinese Academy of Sciences (Grant No. KZCX2-111); and the National Natural Science Foundation of China (Grant No. 40072040).

摘　　要：Abundant terrigenous triterpenoid ketones and a series of hopanoid ketones were detected in a peat sample from the recent Gannan Marsh. The identifications of pen-tacyclic triterpenoid ketones are discussed in detail. Based on the compositional features of pentacyclic triterpenoid ketones in the sample, it is proposed that terrigenous triterpenoid kentones originate directly from organisms or are diagenetic oxidation products of their alcohols, and hopanoid ketones are formed from hopanoids (e.g. hopanoid alcohols and hopenes) by chemical and biochemical processes. These data provide evidence for the applied studies of pentacyclic triterpenoid ketones as biomarker compounds.Abundant terrigenous triterpenoid ketones and a series of hopanoid ketones were detected in a peat sample from the recent Gannan Marsh. The identifications of pen-tacyclic triterpenoid ketones are discussed in detail. Based on the compositional features of pentacyclic triterpenoid ketones in the sample, it is proposed that terrigenous triterpenoid kentones originate directly from organisms or are diagenetic oxidation products of their alcohols, and hopanoid ketones are formed from hopanoids (e.g. hopanoid alcohols and hopenes) by chemical and biochemical processes. These data provide evidence for the applied studies of pentacyclic triterpenoid ketones as biomarker compounds.

关 键 词：Gannan MARSH PEAT pentacyclic TRITERPENOID KETONES IDENTIFICATION biochemistry. 

分 类 号：P596[天文地球—地球化学]