Journal ArticleDOI
Synthesis of 4-phenylcoumarins from Dalbergia volubilis and Exostema caribaeum
Probir Kumar Bose,Julie Banerji +1 more
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TLDR
Two isomeric 4-phenyl coumarins, 3′,7-dihydroxy-4′,5-dimethoxy-4]-phenylcoumarin seshadrin from Dalbergia volubilis, and 3'',5]-dimethyl-4'',7]-dimethyltimethoxy 4'',4''-4´,7'' coumarin from Exostema caribaeum have been synthesized.About:
This article is published in Phytochemistry.The article was published on 1991-01-01. It has received 19 citations till now. The article focuses on the topics: Dalbergia.read more
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Book ChapterDOI
Naturally Occurring Plant Coumarins
TL;DR: 7-hydroxycoumarin [umbelliferone, (2)], one of the most widely distributed coumarins, is often regarded as the parent, in a structural sense and also biogenetically, of a large number of the structurally more complex coumarin.
Journal ArticleDOI
Isoflavonoids and neoflavonoids: naturally occurring O-heterocycles
Journal ArticleDOI
Neoflavones. 2. Methods for Synthesizing and Modifying 4-Arylcoumarins
TL;DR: Literature data up to 2003 were presented and information on methods for preparing and modifying natural 4-arylcoumarins and their synthetic analogs were systematized.
Journal ArticleDOI
Synthesis of Tetrahydropyran-4-ones and Thiopyran-4-ones from Donor-Substituted α-Bromostyrene Derivatives
TL;DR: In this article, arylacetylenes with a specific substitution pattern have been explored; however, on a larger scale only the Corey-Fuchs sequence turned out to be feasible.
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Journal ArticleDOI
Selective demethylation of 3,4-dimethoxy-substituted aromatic aldehydes and ketones
Journal ArticleDOI
A coumestan from Lotus creticus
TL;DR: In this article, 8-(γ,γ-dimethyl-allyl)-1-Methoxycoumestrol has been isolated from the roots of Lotus creticus along with some known compounds.
Journal ArticleDOI
The structure of exostemin, a new 4-phenyl coumarin isolated from Exostemma caribeaum
TL;DR: The structure of exostemin, a constituent isolated from the benzene extract of the Mexican plant Exostemma caribaeum (Rubiaceae), has been established as 8-hydroxy-5,7-dimethoxy-4-(p -methoxyphenyl) coumarin (I).