diastereoisomeric相关论文
A pair of diastereoisomeric furostanol saponins was obtained from the n-butanol fraction of methanol extract from Tupist......
从合欢皮95%乙醇提取物中用溶剂和色谱法分离得到一对非对映异构体九糖皂苷(1,2),经化学与光谱方法鉴定其结构.1和2为新三萜皂苷,分别命......