Showing papers on "Triterpene published in 1967"
TL;DR: The saponin from the roots of Bupleurum falcatum L. on acid hydrolysis affords three triterpenes containing a heteroannular diene and an unidentified triterpene fraction which shows a homo-annular chromophore as mentioned in this paper.
36 citations
TL;DR: A mixture of triterpene methyl ethers obtained from the leaf wax of Cuban sugar cane (Saccharum officinarum L) has been shown to consist predominantly of arundoin (fernenol methyl ether) and sawamilletin (taraxerolmethyl ether) by means of preparative GLC, mass spectrometry and direct comparison with authentic specimens.
30 citations
TL;DR: The incorporation of mevalonic acid-2- 14 C into cut flower stalks of Taraxacum officinale L, whose principal sterol and triterpene respectively in the dried form is β-sitosterol and β-amyrin, was studied at intervals of 0·5 hr to 2 weeks as discussed by the authors.
20 citations
TL;DR: In this article, the identification of triterpene methyl ethers present in Cortaderia toetoe Zotov as arundoin, α-amyrin methyl ether, and β-amide methyl ether was presented.
18 citations
17 citations
TL;DR: Turraeanthin is a derivative of tirucalla-7,24-dienyl 3β-acetate having an oxidised side chain with an aldehyde group at C-21, a hydroxyl group at c-23, and the 24,25 double bond epoxidised as mentioned in this paper.
Abstract: Extraction of the heartwood of Turraeanthus africanus has afforded a new tetracyclic triterpene acetate, turraeanthin, C32H50O5. It is a derivative of tirucalla-7,24-dienyl 3β-acetate having an oxidised side chain with an aldehyde group at C-21, a hydroxyl group at C-23, and the 24,25-double bond epoxidised. The aldehyde group forms a hemiacetal with the C-23 hydroxyl group. Turraeanthin has been converted into flindissone lactone of known structure.The possible role of compounds such as turraeanthin in the biosynthesis of degraded tetracyclic triterpenes is discussed.
16 citations
TL;DR: These concentrations of triterpenoid materials are believed to be the largest found in plant tissues.
Abstract: Pentacyclic triterpene alcohols, together with their acetate, myristate, and palmitate esters, comprise about 40% of the petroleum ether extract of the fruit (seed and pericarp) of twoJurinea species. All the triterpene esters and a porition of the free triterpene alcohols in theJ. anatolica extract are derived from the pericarp portion of the fruit. The triterpene alcohol moieties and their approximate percentage of the hydrolyzed extract ofJ. anatolica fruit are α-amyrin, 5%; β-amyrin, 6%; lupeol, 6%; and ψ-taraxasterol plus taraxasterol, 16%.J. consanguinea fruit extract yields essentially the same amount of the same five triterpene alcohols on hydrolysis. These concentrations of triterpenoid materials are believed to be the largest found in plant tissues.
14 citations
TL;DR: Tanginol as mentioned in this paper belongs to the group of β-amyrins with a 1:2 cis glycol at 6β, 7β and 3β, 23 positions.
14 citations
13 citations
8 citations
TL;DR: The triterpene bauerenyl acetate was isolated directly by crystallization from the non-polar neutral extract of the bark of Tabernaemontana laurifolia D.C..
Patent•
09 May 1967