Journal ArticleDOI
Hydroperoxysesquiterpene and lignan constituents of Magnolia kobus
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TLDR
Two new hydroperoxysesquiterpenes, k Kobusimin A and B, have been isolated from the leaves of Magnolia kobus.About:
This article is published in Phytochemistry.The article was published on 1982-01-01. It has received 68 citations till now. The article focuses on the topics: Magnolia kobus & Magnoliaceae.read more
Citations
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Journal ArticleDOI
Cholesterol autoxidation 1981-1986.
TL;DR: The review builds on the detailed 1981 monographic treatment of the topic by the author and covers new items of chemistry, analysis, and metabolism.
Journal ArticleDOI
Biosynthesis of antioxidant lignans in Sesamum indicum seeds
TL;DR: Using a combination of radio- and stable-isotopically labelled precursor administration experiments, it was demonstrated that E-coniferyl alcohol undergoes stereoselective coupling to afford (+)-pinoresinol in Sesamum indicum seeds.
Journal ArticleDOI
13C NMR Spectroscopy of lignan and neolignan derivatives
TL;DR: In this article, 13C NMR shielding data for about 300 compounds are tabulated, and critical spectral features are discussed as a guide to the use of the technique in structure elucidation and stereochemical allocations of lignan, neolignan and their derivatives.
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Short and stereoselective total synthesis of furano lignans (+/-)-dihydrosesamin, (+/-)-lariciresinol dimethyl ether, (+/-)-acuminatin methyl ether, (+/-)-sanshodiol methyl ether, (+/-)-lariciresinol, (+/-)-acuminatin, and (+/-)-lariciresinol monomethyl ether and furofuran lignans (+/-)-sesamin, (+/-)-eudesmin, (+/-)-piperitol methyl ether, (+/-)-pinoresinol, (+/-)-piperitol, and (+/-)-pinoresinol monomethyl ether by radical cyclization of epoxides using a transition-metal radical source.
TL;DR: Intramolecular radical cyclization of suitably substituted epoxy ethers 4a-g using bis(cyclopentadienyl)titanium(III) chloride as the radical source resulted in trisubstituted tetrahydrofurano lignans and 2,6-diaryl-3,7-dioxabicyclo[3.3.0]octane lignan depending on the reaction conditions.
References
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13CNMR analysis of symplocosin and (+)-epipinoresinol glucoside
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The chromatographic analysis of organic peroxides
TL;DR: In this article, reversed-phase chromatography was used to identify organic peroxides on siliconc-treated paper, a chloroform-ethanol-water mixture was used as solvent, and the spray reagent was acidified ferrous thiocyanate.
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The Structures of some Stress Metabolites from Solanummelongena
TL;DR: The structures of the acyclic sesquiterpenes 1, 5 and 7 were elucidated with the aid of 1H and 13C n.m.r. s....
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The position of glucose linkage in phillyrin.
TL;DR: The position of glucose linkage in phillyrin was established to be at C-4" by the discussion of 13C nuclear magnetic resonance (13C-NMR) spectra of phillygenin methyl ether (2), phillygenerin (3), and phillyogenin acetate (4) as mentioned in this paper.