Showing papers on "Triterpene published in 1977"
TL;DR: The distribution of the first eight triterpene alcohols in the seeds of eleven plants belonging to seven genera of Solanaceae family was determined.
44 citations
TL;DR: The free, esterified and glycosylated sterols and the pentacyclic triterpene esters of developing Sorghum bicolor grains were analysed by GLC and GC-MS and a sixfold increase in total sterol per grain occurred during development.
24 citations
TL;DR: In this article, the root extract of Planchonia careya has been used to extract 16-deoxybarring-togenol C, barringtogenols C and 16α,21β,22α,28-tetrahydroxyolean-12-en-3-one.
Abstract: From the ether extract of the bark of Planchonia careya there have been isolated 16-deoxybarring-togenol C, barringtogenol C and the previously unreported 16α,21β,22α,28-tetrahydroxyolean-12-en-3-one. The methanol extract, after mild acid hydrolysis, gave the same three compounds together with three new esterified triterpene glycosides, the structures of which have been elucidated.
10 citations
10 citations
Journal Article•
9 citations
TL;DR: A new triterpene, betulafolienpentaol, 3α,12β,17,20,25-pentahydroxy dammar-23 trans-ene and two other known triterpenes were isolated from Betula platyphylla as mentioned in this paper.
8 citations
TL;DR: The conversion of mevalonate into squalene exhibited an absolute requirement for ATP and Mn2+ and was enhanced in the presence of NADP or NADPH.
Abstract: Evidence for the conversion of [2-14C]mevalonic acid into triterpene and some tetraterpene components of Neurospora crassa in a cell-free system is presented. Radioactivity in the non-saponifiable ...
7 citations
TL;DR: From the bark extractives of Mesua myrtifolia (a Malaysian species) simiarenone, simiara, simianol, taraxerol, betulinic acid, and a new triterpene acid was isolated as discussed by the authors, which was correlated with bauerene and identified as 3α-hydroxybauer-7-en-28-oic acid.
Abstract: From the bark extractives of Mesua myrtifolia(a Malaysian species) simiarenone, simiarenol, taraxerol, betulinic acid, and a new triterpene acid, myrtifolic acid, have been isolated. The latter has been correlated with bauerene and identified as 3α-hydroxybauer-7-en-28-oic acid. From the timber extractives myrtifolic acid, oleanolic acid, and jacareubin have been obtained.
6 citations
TL;DR: In this paper, a triterpene lactone, alnuselide, was isolated from the male flowers of Alnus serrulatoides Call (Betulaceae).
Abstract: A novel C31-3,4-secodammarane-type triterpene lactone, alnuselide, was isolated from the male flowers of Alnus serrulatoides Call. (Betulaceae). The structure of alnuselide was elucidated to be (11R,20S,24R)-20,24-epoxy-24-methyl-3,4-secodammar-4(28)-en-3,11-carbolactone (I) by a combination of the chemical and spectroscopic methods and the synthesis.
5 citations
4 citations
TL;DR: The structure of a previously unknown pentacyclic triterpene isolated from Centaurea squarrosa willd has been established as mentioned in this paper, it is urs-20(3)-en-3β-ol (I).
Abstract: The structure of a previously unknown pentacyclic triterpene isolated fromCentaurea squarrosa Willd. has been established. It is urs-20(3)-en-3β-ol (I).
01 Sep 1977
TL;DR: In this article, the triterpenes oleanolic acid and methyl machaerinate and the common plant sterol, beta-sitosterol, were identified, and two other isolated compounds, named epithelanthic acid (EHA) and methyl epithelantha (MHE) were postulated to be new delta9(11)-12-oxooleanenes, and another trace compound was incompletely categorized as a triterpene lactone.
Abstract: Ethanolic extracts of the title plant were toxic to mice. Acid hydrolysis of the toxic extracts permitted the isolation of six crystalline compounds. The known triterpenes oleanolic acid and methyl machaerinate and the common plant sterol, beta-sitosterol, were identified. The structures of two other isolated compounds, named epithelanthic acid and methyl epithelanthate, were postulated to be new delta9(11)-12-oxooleanenes, and another trace compound was incompletely categorized as a triterpene lactone.
TL;DR: In this paper, several pentacyclic triterpenoids were shown to inhibit protein biosynthesis in the cells of rat marrow The magnitude of the effect depends on the chemical structure of the triterpene glycosides.
TL;DR: Corrected structural formulas of acanthophyllosides B and C have been put forward and the hypothesis has been expressed that D-quinovose is present in a number of glycosides isolated from plants of the family Caryophyllaceae.
Abstract: It has been established that the carbohydrate moiety of acanthophyllosides B and C contain D-quinovose. Corrected structural formulas of acanthophyllosides B and C have been put forward. The hypothesis has been expressed that D-quinovose is present in a number of glycosides isolated from plants of the family Caryophyllaceae.
TL;DR: Arjungenin, a triterpene isolated from Terminalia arjuna, was shown to be 2α,3β,19α,23-tetrahydroxyolean-12-en-28-oic acid as mentioned in this paper.
Abstract: Arjungenin, a new triterpene isolated from Terminalia arjuna, is shown to be 2α,3β,19α,23-tetrahydroxyolean-12-en-28-oic acid (1). The structures of two new triterpene glucosides, arjunglucoside I and arjunglucoside II, isolated from the same plant, were determined to be β-D-glucopyranosyl 2α,3β,19α,23-tetrahydroxyolean-12-en-28-oate (2) and β-D-glucopyranosyl arjunolate (3), respectively.