✦ LIBER ✦

Isolation and Structure Determination of new Iridals fromIris sibirica andIris versicolor

✍ Scribed by Marner, Franz-Josef ;Longerich, Irmgard

Publisher: John Wiley and Sons
Year: 1992
Tongue: English
Weight: 382 KB
Volume: 1992
Category: Article
ISSN: 0947-3440
DOI: 10.1002/jlac.199219920146

No coin nor oath required. For personal study only.

✦ Synopsis

Abstract

Four novel iridals (compounds 8, 11, 12, and 13), representing new examples of these unusual monocyclic triterpenoids from sword lilies, have been isolated from rhizome extracts of I. sibirica and I. versicolor. Their structures have been elucidated by spectroscopic methods combined with oxidative degradation. Based on the stereochemistry of the 10‐deoxy‐17‐hydroxyiridal 13, the possible biosynthesis of these compounds is discussed.

📜 SIMILAR VOLUMES

Isolation and structure determination of

Isolation and structure determination of new spiro-bicyclic triterpenoids fromIris pseudacorus

✍ Marner, Franz-Josef ;Littek, André ;Arold, Rainer ;Seferiadis, Konstantin ;Jaeni 📂 Article 📅 1990 🏛 John Wiley and Sons 🌐 English ⚖ 517 KB

## Abstract Four novel types of iridals (compounds 8, 9, 15 and 16) have been isolated from lipid extracts of roots and rhizomes of __I. pseudacorus__ and their structures (except the stereochemistry of 15 at C‐13 and C‐26 and of 16 at C‐13) elucidated by oxidative degradation combined with spectro

Structure Determination of New Iridals f

Structure Determination of New Iridals from Iris pallida and Iris foetidissima

✍ Andrè Littek; Franz-Josef Marner 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 German ⚖ 612 KB

## Abstract The four novel iridals 8–10 and 18 were isolated from rhizome extracts of __Iris pallida__ and __Iris foetidissima__, and their structures were established by spectroscopic methods and oxidative degradation. The compounds 8–10 bearing a conjugated triene moiety are extremely labile and

Isolation and Structure Determination of

Isolation and Structure Determination of New Jatrophane Diterpenoids from Euphorbia platyphyllos L.

✍ Judit Hohmann; Peter Forgo; Dezsoe Csupor; Gitta Schlosser 📂 Article 📅 2004 🏛 John Wiley and Sons ⚖ 83 KB 👁 1 views

Isolation and Structure Determination of

Isolation and Structure Determination of New Jatrophane Diterpenoids from Euphorbia platyphyllos L.

✍ Judit Hohmann; Peter Forgo; Dezsö Csupor; Gitta Schlosser 📂 Article 📅 2003 🏛 John Wiley and Sons 🌐 German ⚖ 101 KB

## Abstract Three new, highly functionalized jatrophane diterpenes (**1**–**3**) have been isolated from the whole, dried plants of __Euphorbia platyphyllos__ L., together with one known jatrophane polyester (**4**). The structures were established by UV/VIS spectroscopy, HR‐ESI‐MS, and advanced tw

Isolation and Structure Determination of

Isolation and Structure Determination of Three New Ceramides from the Starfish Distolasterias nipon.

✍ Jung Rae Rho; Young Hwan Kim 📂 Article 📅 2006 🏛 John Wiley and Sons ⚖ 12 KB 👁 2 views

Antitumor activity of Bursera schlechten

Antitumor activity of Bursera schlechtendalii (Burseraceae): Isolation and structure determination of two new lignans

✍ P. B. McDoniel; J. R. Cole 📂 Article 📅 1972 🏛 John Wiley and Sons 🌐 English ⚖ 344 KB

0 Bursera scIiIe~Ii~e~idu/ii (Burseraceae) has shown antitumor activity against the 9KB (adenocarcinoma of nasal pharynx) test system. Two new lignans isolated from the biologically active plant fraction were identified as (-)-tm~i~ -2-(3",4",5"-trimethoxy-benzyl>3-(3',4'-methylenedioxybenzyl)butyro