20974-68-9

Usage

InChI:InChI=1/C10H10O4/c11-9(12)5-4-7-2-1-3-8-10(7)14-6-13-8/h1-3H,4-6H2,(H,11,12)

Upstream product

• 7797-83-3 2H-benzo[d]1,3-dioxolane-4-carbaldehyde 
• 287118-44-9 3-(2,3-methylenedioxyphenyl)acrylic acid 
• 38489-70-2 2,3-(methylenedioxy)cinnamic acid 

Downstream Products

• 124399-97-9 2-(N-benzylamino)-5,6-(methylenedioxy)-1,2,3,4-tetrahydronaphthalene 
• 774605-32-2 5-(2-benzo[1,3]dioxol-4-yl-ethyl)-3-(2,6-dichloro-phenyl)-isoxazole-4-carboxylic acid ethyl ester 
• 774605-55-9 5-(2-benzo[1,3]dioxol-4-yl-ethyl)-3-(2,6-dichloro-phenyl)-isoxazole-4-carboxylic acid 

Relevant academic research and scientific papers

Total Synthesis of (±)-Impatien A via Aza-Heck Cyclization

The first total synthesis of the natural product impatien A is described. This concise synthesis features an aza-Heck cyclization to construct the complex spirocyclic ring system and provides a rare example of the use of aza-Heck cyclizations in complex molecule synthesis. To enable this key cyclization of an electrophilic nitrogen atom with a tetrasubstituted alkene, we utilized high-throughput experimentation to identify a new ligand and ultimately deliver impatien A in seven steps from known compounds.

PYRIDINONE ANTAGONISTS OF ALPHA-4 INTEGRINS

The present invention provides compounds that are alpha4 integrin antagonists having a structure according to the following formula (I) or a tautomer, mixture of tautomers, salt or solvate thereof, wherein Cy, ring A, m, n, p, R1, R2

Substituted benz[a]acridines and benz[c]acridines as mammalian topoisomerase poisons

Coralyne and several other synthetic benzo[a,g]quinolizium derivatives related to protoberberine alkaloids have exhibited activity as topoisomerase poisons. These compounds are characterized by the presence of a positively charged iminium group, which has been postulated to be associated with their pharmacological properties. The objective of the present study was to devise stable noncharged bioisosteres of these compounds. Several similarly substituted benz[a]acridine and benz[c]acridine derivatives were synthesized and their relative activity as topoisomerase poisons was determined. While the benz[c]acridine derivatives evaluated as part of this study were devoid of topoisomerase poisoning activity, several dihydrobenz[a]acridines were able to enhance DNA cleavage in the presence of topo I. In contrast to certain protoberberine derivatives that did exhibit activity as topo II poisons, none of the benz[a]acridines derivatives enhanced DNA cleavage in the presence of topo II. Among the benz[a]acridines studied, 5,6-dihydro-3,4- methylenedioxy-9,10-dimethoxybenz[a]acridine, 13e, was the most potent topo I poison, with comparable potency to coralyne. These data suggest that heterocyclic compounds structurally related to coralyne can exhibit potent topo I posioning activity despite the absence of an iminium cation within their structure. In comparison to coralyne or other protoberberine derivatives, these benz[a]acridine derivatives possess distinctly different physicochemical properties and represent a novel series of topo I poisons. (C) 2000 Elsevier Science Ltd.

Nonneurotoxic Tetralin and Indian Analogues of 3,4-(Methylenedioxy)amphetamine (MDA)

Four cyclic analgues of the psychoactive phenethylamine derivative 3,4-(methylenedioxy)amphetamine were studied.These congeners, 5,6- and 4,5-(methylenedioxy)-2-aminoindan (3a and 4a, respectively), and 6,7- and 5,6-(methylenedioxy)-2-aminotetralin (3b and 4b, respectively) were tested for stimulus generalization in the two-lever drug-discrimination paradigm.Two groups of rats were trained to discriminate either LSD tartrate (0.08 mg/kg) from saline, or (+/-)-MDMA*HCl (1.75 mg/kg) from saline.In addition, a 2-aminoindan (5a) and 2-aminotetralin (5b) congener of the hallucinogenic amphetamine 1-(2,5-dimethoxy-4-methylphenyl)-2-aminopropane (DOM) were also evaluated.None of the methylenedioxy compounds substituted in LSD-trained rats, while both 3a and 3b fully substituted in MDMA-trained rats.Compounds 4a and 4b did not substitute in MDMA-trained rats.Compounds 5a and 5b did not substitute in MDMA-trained rats, although 5a substituted in LSD-trained rats, but with relatively low potency compared to its open-chain counterpart.In view of the now well-established serotonin neurotoxicity of 3,4-(methylenedioxy)amphetamine and its N-methyl homologue 1, 3a and 3b were evaluated and compared to 1 for similar toxic effects following a single acute dose of 40 mg/kg sc.Sacrifice at 1 week showed that neither 3a nor 3b depressed rat cortical or hippocampal 5-HT or 5-HIAA levels nor were the number of binding sites (Bmax) depressed for paroxetine.By contrast, and in agreement with other reports, 1 significantly depressed all three indices of neurotoxicity.These results indicate that 3a and 3b have acute behavioral pharmacology similar to 1 but that they lack similar serotonin neurotoxicity.