4936-10-1

Upstream product

• 4657-58-3 cycloartanol 
• 1259-10-5 cycloartenyl acetate 
• 31978-75-3 3-epicycloartenol 
• 157523-40-5 cycloart-25-en-3-one 
• 1768-79-2 cycloart-25-en-3β-ol 
• 469-38-5 cycloartenol 
• 511-63-7 cycloart-24-en-3-one 
• 4657-58-3 cycloartanol 
• 141946-48-7 5α-Cycloart-24-ene-3,23-dione 
• 146257-66-1 (23R/S)-3,3-Ethylenedioxy-5α-cycloartan-23-ol 
• 146257-55-8 3β-Hydroxy-5α-cycloart-24-en-23-one 
• 146257-56-9 3α-Hydroxy-5α-cycloart-24-en-23-one 
• 146257-65-0 3,3-Ethylenedioxy-5α-cycloartan-23-one 
• 146257-64-9 3,3-Ethylenedioxy-5α-cycloart-24-en-23-one 

Downstream Products

• 4657-58-3 cycloartanol 
• 54482-57-4 (23E)-25-hydroxycycloart-23-ene-3β,25-diol 
• 99946-06-2 cycloart-25-en-3b,24-diol 
• 4575-74-0 cycloartanyl acetate 

Relevant academic research and scientific papers

CYCLOARTANES AND OTHER TERPENOIDS AND PHENYLPROPANOIDS FROM MONOCYCLANTHUS VIGNEI

From the petrol extract of the stem bark of Monocyclanthus vignei 30 terpenoids and two phenylpropanoids have been isolated and their structures established, among them 17 new cycloartane-type compounds.Geranic acid and β-caryophyllene were found to be the major constituents. Key words: Monocyclanthus vignei; Annonaceae; stem bark; cycloartanes; sterols; sesquiterpenes; geranic acid; phenylpropanoids.

BUXUS ALKALOIDS. PART XI. THE SYNTHESIS OF CYCLOPROTOBUXINE-A (3β,20S-CHIRALITY) AND ITS TWO ISOMERIC ALKALOIDS WITH 3β,20R- AND 3α,20R- CONFIGURATION FROM LANOSTEROL.

The synthesis of cycloprotobuxine-A (5), representative of Buxus alkaloids, and its two isomeric alkaloids with 3β,20R- and 3α,20R-configuration, from lanosterol, is described.In order to confirm the stereochemistries at C-3 and C-20 in these three alkaloids, the 3β-dimethylamino-(27) and the 3α-dimethylamino derivative (28) of cycloartanol (24) were also synthesised and their 1H and 13C n.m.r.spectra are discussed.

FERN CONSTITUENTS: TRITERPENOIDS ISOLATED FROM POLYPODIUM VULGARE, P. FAURIEI AND P. VIRGINIANUM

Key Word Index - Polypodium vulgare; P. fauriei; P. virginianum; Polypodiaceae; rhizomes; hop-22(29)-ene; isohop-22(29)-ene; fernenes; serrat-14-ene; dammaradienes; eupha-7,21-diene; cycloartanoid; cyclopodmenyl acetate.The fresh rhizomes of Polypodium vulgare, P. fauriei and P. virginianum collected in Japan gave, in addition to 30 known compounds, three new triterpenoids; dammara-17,21-diene, cyclopodmenyl acetate and 21αH-hopan-22-ol, The structures were elucidated by their physical data and chemical correlations.

New Triterpenes from Swietenia mahagoni Linn: Part V - Scission of C10-C19 Bond of Cyclopropane Ring in Cycloartenol

A successful method is described for the first time to open the cyclopropane ring of cycloartenol (III) to yield 9β-hydroxymethyl derivative (X), in an attempt to establish the biogenetic origin of 9β-hydroxymethyl in cucurbitacins (I).Cycloartanone (VI) is first converted into cycl-1-en-3-one (IV), which rearranges in presence of ethanol-sulphuric acid to yield 9β-hydroxymethyllanosta-1(10)-en-3-one (X).