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| Predicate | Object |
|---|---|
| rdf:type | |
| lifeskim:mentions | |
| pubmed:issue |
12
|
| pubmed:dateCreated |
1992-10-6
|
| pubmed:abstractText |
Cynanester A (I) a new triterpenoid ester was isolated, together with lupeol acetate, lignoceric acid and beta-sitosterol, from Cynanchum chinense R. Br. (Asclepiadaceae). The mass spectrum suggested the presence of caproyl group and lupane skeleton with isopropenyl group in the molecule. Alkaline hydrolysis of I with 5% methanolic potassium hydroxide yielded lupeol Ia and n-caproic acid. The acid was esterified with MeOH-H2SO4 to afford methyl caproate, by GLC comparison with authentic sample. The acid was also identified by IR comparison. As above, the structure of cynanester A was established as lupeol caproate.
|
| pubmed:language |
chi
|
| pubmed:journal | |
| pubmed:citationSubset |
IM
|
| pubmed:chemical | |
| pubmed:status |
MEDLINE
|
| pubmed:issn |
0513-4870
|
| pubmed:author | |
| pubmed:issnType |
Print
|
| pubmed:volume |
26
|
| pubmed:owner |
NLM
|
| pubmed:authorsComplete |
Y
|
| pubmed:pagination |
918-22
|
| pubmed:dateRevised |
2006-11-15
|
| pubmed:meshHeading | |
| pubmed:year |
1991
|
| pubmed:articleTitle |
[Isolation and identification of cynanester A from Cynanchum chinense R. Br].
|
| pubmed:affiliation |
Ningxia Medicinal College, Yinchuan.
|
| pubmed:publicationType |
Journal Article,
English Abstract
|