Recent intorost has arisen on of tho former with nooflavanoide oinn8mylphonole and flav-3-onoa. Tho oo-occurrenoe in nsturo (1) ho8 lod to tho proposal of 8ttraotivo biogonotio8l 8oheme8 (2,3), whore the role of oinn8raylphonola in tho biogonoeia of nooflavmoids and their aongsnors ha8 been omphaeia
Synthesis of a flav-3-en-3-ol via cinnamylphenol
β Scribed by A. Zanarotti
- Publisher
- Elsevier Science
- Year
- 1982
- Tongue
- French
- Weight
- 133 KB
- Volume
- 23
- Category
- Article
- ISSN
- 0040-4039
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β¦ Synopsis
Vinyl qunone methlde (1) reacts with polyphenols to give clnnamylphenols (4) and neoflavanolds (5) Oxldatlon of onnamylphenol (41,) leads to malvldln (10) Vu-the lsolated lntermedyate flav-3-en-3-01 (8b)
π SIMILAR VOLUMES
Flavan-3,4-diols are subject to facile conversion into flav-3-en-3-ols which are versatile precursors in flavonoid synthesis. The flavan-3-ones undergo a unique Lewis acid assisted a-sulfenylation reaction with benzyl mercaptan in the presence of SnCl 4 .
## Abstract ChemInform is a weekly Abstracting Service, delivering concise information at a glance that was extracted from about 100 leading journals. To access a ChemInform Abstract of an article which was published elsewhere, please select a βFull Textβ option. The original article is trackable v
N-iodosuccinimide (NIS) induces cyclization of substituted 2-allylphenols to 3-iodochromanes which may be dehydrohalogenated to the corresponding chrom-3-enes. Almost every class of natural phenolic compounds contains examples of sub-1 stances with 2,2'-dialkylchromene rings . Recently Pratt and Bow
I-Arylprop-2-ynyl aryl ethers (6) undergo a facile Claisen rearrangement in N,N-diethylaniline/o-dichlorobenzene to give flav-3-enes in good yields. Though the aryl propargyl ether Claisen rearrangement has been recognised as one of the simple routes for the synthesis of 2H-I-benzopyrans' there are