...
  • 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Agricultural and Food Chemistry >NOVEL HIGHLY SWEET SECODAMMARANE GLYCOSIDES FROM PTEROCARYA PALIURUS
【24h】

NOVEL HIGHLY SWEET SECODAMMARANE GLYCOSIDES FROM PTEROCARYA PALIURUS

机译：来自Pterocarya pauliurus的新型高甜苏达玛烷糖苷

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Two novel, potently sweet 3,4-secodammaranoid saponins designated pterocaryosides A (1) and B (2) have been isolated from the leaves and stems of the Chinese tree Pterocarya paliurus. The structures of these compounds were established as (23E)-(12R,20S)-12,20,25-trihydroxy-3,4-secodammara-4(28),23-dien-3-oic acid 12-O-beta-D-quinovopyranoside and (23E)-(12R,20S)-12,20,25-trihydroxy-3,4-secodammara-4(28),23-dien-3-oic acid 12-O-alpha-L-arabinopyranoside, on the basis of spectroscopic measurements, especially 1D and 2D NMR data. The methylated peracetates of pterocaryosides A and B were prepared and used for structural confirmation. Preliminary evaluations constituted by mouse acute toxicity and bacterial mutagenesis determinations supported the safety of 1 and 2, and subsequently the compounds were rated by a human taste panel as about 50 and 100 times sweeter than 2% sucrose, respectively.
机译：从中国Pterocarya paliurus的叶子和茎中分离出了两种新颖的，强效的甜味3,4-secodammaranoid皂苷，称为Pterocaryosides A（1）和B（2）。这些化合物的结构确定为（23E）-（12R，20S）-12,20,25-三羟基-3,4-secodammara-4（28），23-dien-3-oic acid 12-O-beta -D-喹喔啉吡喃糖苷和（23E）-（12R，20S）-12,20,25-三羟基-3,4-secodammara-4（28），23-二烯-3-油酸12-O-α-L-阿拉伯吡喃糖苷，基于光谱测量，尤其是1D和2D NMR数据。制备了翼龙A和B的甲基化过乙酸盐，并将其用于结构确认。由小鼠急性毒性和细菌诱变测定所组成的初步评估支持1和2的安全性，随后该化合物被人味评估小组评定为分别比2％蔗糖甜50倍和100倍。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号