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1)  C21 steroidal aglycone
C21甾苷元
1.
Using C21 steroidal aglycones(Caudatin steroidal aglycones and Kaider steroidal aglycones) extracted from Sanxia Cynanchum auriculatum as substrate,C11α-hydroxylated Cynanchum auriculatum C21 steroidal aglycones were prepared by Rhizopus nigricans and Aspergillus ochraceus.
以自三峡白首乌提取分离得到的C21甾苷元告达庭甾苷元和开德甾苷元作为底物,采用黑根霉(Rhizopus nigricans)和赭曲霉(Aspergillus ochraceus。
2)  C21 steroid glycosides
C21甾体苷
3)  C21 steroidal glycosides
C21甾苷
1.
Results:The Temperature,the particle size of material and the 95% ethanol dosage were the main factors affecting the extraction of C21 steroidal glycosides,while the extraction duration presented the smallest effect.
目的:对白首乌中C21甾苷超临界CO2流体萃取工艺参数进行优化。
2.
Objective To study content of C21 steroidal glycosides in supercritical carbon dioxide with different solvents.
目的探讨含不同夹带剂的超临界CO2对C21甾苷提取的影响。
4)  C 21 steroidal aglycones
C21甾甙元
5)  C_(21) Steroidal-Glycosides
C21甾体酯苷
1.
Objective To extract C_(21) Steroidal-Glycosides from the Herborize roots of Cynanchum auriculatum from the area of Three Gorges as much as possible.
方法采用微波萃取技术对隔山牛皮消的活性成分C21甾体酯苷进行提取,通过4因素3水平的正交试验,用分光光度法测定三峡隔山牛皮消中的C21甾体酯苷含量。
6)  C21steroidal glycosides
C21甾体糖苷
1.
Objective:To establish a quantitative method to deter mine C21steroidal glycosides inMarsdenia tenacissima.
目的:建立通光藤中C21甾体糖苷成分的含量测定方法,为通光藤药材的质量控制提供依据。
补充资料:苷元
分子式:
CAS号:

性质:又称甙元。糖苷类化合物中,与糖缩合的非糖部分。苷元可以是醇如甲醇、乙醇、甾醇,这样的苷称为氧苷;可以是硫醇如乙硫醇,这样的苷称为硫苷;可以是羧酸如脂肪酸,这样的苷称为糖酯;可以是胺类,这样的苷称为氮苷;也可以是苷元的碳原子直接与糖连接,称为碳苷。

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