pentacyclic相关论文
研究苦葛Ｐｕｅｒａｒｉａ ｐｅｄｕｎｃｕｌａｒｉｓ（Ｇｒａｈ．ｅｘ Ｂｅｎｔｈ．）Ｂｅｎｔｈ。根的化学成分。方法用各种色谱技术进行分离，得到３个五环三匝化合物，用ＩＲ，ＭＳ＾１ＨＮＭＲ，＾１３ＣＮＭＲ（ＤＥＰＴ），ＨＭＱＣ），ＨＭＢＣ，ＮＯＥＳＹ和ＮＯＥ差谱鉴定化合物。结果经光谱鉴定化合物１为３－Ｏ－β－Ｄ－吡......
报道从生药路路通分离得到４个五环三萜类化合物．通过１３ＣＮＭＲ，ＤＥＰＴ，１ＨＮＭＲ，ＩＲ和ＭＳ鉴定了它们的结构，为６β－羟基羽扇－２０（２９）－烯－３－酮－２８－羧酸（１），羽扇－２０（２９）烯－３－酮－２８－羧酸（２），乌斯－１２（１３）－烯－３－酮－２８－羧酸（３），３β－羟基齐墩果......
Novel Diazole/Triazole and Dibenzothiophene Dioxide Containing Pentacyclic Systems with Promising Bi
The aim of the current work is to synthesize the new heterocyclic pentacyclic condensed systems that combine benzothioph......
Distribution Patterns of Pentacyclic TriterpenoidHydrocarbons in Low-Mature Source Rocksfrom Eastern
Four typical distribution patterns of pentacyclic triterpenoid hydrocarbons (types A-D) are distinguished in the low-mat......
