140669-89-2

Basic information

• Product Name: Kadsurenin D
• Synonyms: Kadsurenin D
• CAS NO: 140669-89-2
• Molecular Formula: C21H24O5
• Molecular Weight: 356.41226
• Mol File: 140669-89-2.mol
• Article Data: 2

Chemical Properties

• Appearance: /
• CAS DataBase Reference: Kadsurenin D(CAS DataBase Reference)
• NIST Chemistry Reference: Kadsurenin D(140669-89-2)
• EPA Substance Registry System: Kadsurenin D(140669-89-2)

Safety Data

• Hazardous Substances Data: 140669-89-2(Hazardous Substances Data)

Usage

General Description

Kadsurenin D is a naturally occurring chemical compound found in the plant Stephania tetrandra. It belongs to the group of bisbenzylisoquinoline alkaloids and has been traditionally used in Traditional Chinese Medicine for its potential anti-inflammatory and analgesic properties. Studies have shown that Kadsurenin D has inhibitory effects on the production of pro-inflammatory cytokines and mediators, making it a potential candidate for the development of therapeutic agents for inflammatory diseases. Additionally, it has been reported to exhibit cytotoxic activity against cancer cells. Further research is warranted to explore the full pharmacological potential of Kadsurenin D and its possible applications in medicine.

Upstream product

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Relevant articles and documents

Regioselective Lewis acid-directed reactions of 2-alkoxy-5-alkyl-1,4-benzoquinones with styrenes: Synthesis of burchellin and guianin neolignans

Reactions of 2-carbomethoxy-5-methoxy-1,4-benzoquinone with (E)-propenylbenzenes promoted by Ti(IV) regio- and stereoselectively yield trans 2-aryl-4-carbomethoxy-7-methoxy-3-methyl-2,3-dihydro-5-benzofuranols. However, the products found in Lewis acid-promoted reactions of 2-alkoxy-5-alkyl-1,4-benzoquinones with (E)-propenylbenzenes depend on the nature of the Lewis acid. Low-temperature reactions with SnCl4 produce rel-(1R,6S,7S,8R)-4-alkoxy-1-alkyl-7-aryl-8-methylbicyclo[4.2.0]oct-3- ene-2,5-diones 21-23 and products derived from them. Allowing the reactions to warm to room temperature results in rel-(2S,3S,3aR)-3a-alkyl-2-aryl-5-hydroxy-3-methyl-2,3,3a,6-tetrahydro -6-oxobenzofurans as mixtures of keto-enol tautomers 26/27 and 28/29. With Ti(IV) as promoter, the reactions can be made to produce either 21-23 or the regioisomeric rel-(1S,6R,7R,8S)-4-alkoxy-1-alkyl-8-aryl-7-methylbicyclo[4.2.0]oct-3- ene-2,5-diones 18-20. The ratio of the two depends upon the makeup of the Ti(IV) promoter and the substituents on the propenylbenzene. A mechanistic rationale is presented involving regioselective coordination of the different Lewis acids to the quinone. Thus, SnCl4 binds to the C-1 carbonyl and C-2 alkoxy oxygens, forming a complex possessing a 2-alkoxy-5-alkyl-4-oxo-2,5-cyclohexadienyl carbocation moiety (e.g. 30) which undergoes a thermally allowed 4π + 2π (5 + 2) cycloaddition with propenylbenzene to give a bicyclo[3.2.1]octenyl carbocation 31; this cation then rearranges to the observed products. On the other hand, the Ti(IV)-promoted reactions give either bicyclo[3.2.1]octenyl carbocation 31 or 34, depending upon reaction conditions, followed by rearrangement. Cyclobutanes 18-20 undergo protic acid rearrangement to give trans 7-alkoxy-4-alkyl-2-aryl-3-methyl-2,3-dihydro-5-benzofuranols 15-17, whereas cyclobutanes 21-23 yield 5-alkyl-7-aryl-3-hydroxy-6-methylbicyclo[3.2.1]oct-3-ene-2,8-diones 24/25. The reactions provide an efficient and stereoselective route to neolignans of the guianin and burchellin classes.