1) C-steroidal glycosides
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C21甾
1.
Results: The major chemical constituents isolated from the plants of this genus were cardiac glycosides and C-steroidal glycosides,which had the activities of cardiac and antitumor.
结果:近几年研究表明,杠柳属植物的主要化学成分为强心苷类和C21甾类化合物,其中某些成分具有显著的强心、抗癌等药理活性。
2) C 21 steroidal aglycones
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C21甾甙元
3) C21 steroidal aglycone
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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。
5) C21 steroidal glycosides
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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。
6) C21 steroid
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C21甾体
1.
The chemical constituents isolated from this genus include C21 steroids,triterpenes and cyclitols.
萝藦科牛奶菜属植物全世界约100种,中国产22种5变种,化学成分主要包括C21甾体类、三萜类和环醇类等。
补充资料:21-羟基孕甾-4-烯-3,20-二酮-21-醋酸酯
分子式:C23H32O4
分子量:372.51
CAS号:56-47-3
性质:结晶(丙酮)或针状结晶(乙醇),空气中稳定。熔点154-160℃(159-161℃),高真空时升华。[α]10/D-177°(乙醇)/[α]20/D+168-176°(二噁烷)。微溶于乙醇、甲醇、丙酮、乙醚、二噁烷、植物油,不溶于水。
制备方法:暂无
用途:羟孕酮琥酯钠的中间体。
分子量:372.51
CAS号:56-47-3
性质:结晶(丙酮)或针状结晶(乙醇),空气中稳定。熔点154-160℃(159-161℃),高真空时升华。[α]10/D-177°(乙醇)/[α]20/D+168-176°(二噁烷)。微溶于乙醇、甲醇、丙酮、乙醚、二噁烷、植物油,不溶于水。
制备方法:暂无
用途:羟孕酮琥酯钠的中间体。
说明:补充资料仅用于学习参考,请勿用于其它任何用途。
参考词条