33446-14-9Relevant academic research and scientific papers
New turn on fluorimetric sensor for direct detection of ultra-trace ferric ions in industrial wastewater and its application by test strips
Kamel, Rasha M.,El-Sakka, Sahar S.,Bahgat, Khaled,Monir, Marina R.,Soliman
, (2021)
New 5-(4-(dimethylamino)phenyl)-4-(2-(4-methoxy-3-methylphenyl)-2-oxoethyl)-1H-pyrazol-3(2 H)-one (AAP) sensor was synthesized and well characterized. AAP sensor was developed for direct detection of ultra-traces of Fe3+ ions in industrial wast
Synthesis of Some New 4,5-dihydro-6-(4-methoxy-3-methylphenyl)-3(2H)- pyridazinone Derivatives
Soliman, Mohamed H.A.,El-Sakka, Sahar S.
body text, p. 230 - 234 (2011/06/26)
The present study describes the synthesis of 4,5-dihydro-6-(4-methoxy-3- methylphenyl)-3(2H)-pyridazinone derivatives. The synthesis of the first target compound, 4,5-dihydro-6-(4-methoxy-3-methylphenyl)-3(2H)-pyridazinone (1), was achieved by Friedel-Cra
(+)- And (-)-mutisianthol: First total synthesis, absolute configuration, and antitumor activity
Bianco, Graziela G.,Ferraz, Helena M. C.,Costas, Arinice M.,Costa-Lotufo, Leticia V.,Pessoa, Claudia,De Moraes, Manoel O.,Schreins, Marcus G.,Pfaltz, Andreas,Silva Jr., Luiz F.
supporting information; scheme or table, p. 2561 - 2566 (2009/09/25)
The first synthesis of the natural product (+)-mutisianthol was accomplished in 11 steps and in 21% overall yield from 2-methylanisole. The synthesis of its enantiomer was also performed in a similar overall yield. The absolute configuration of the sesquiterpene (+)-mutisianthol was assigned as (15,37?). Key steps in the route are the asymmetric hydrogenation of a nonfunctionalized olefin using chiral iridium catalysts and the ring contraction of 1,2-dihydronaphthalenes using thallium(III) or iodine(III). The target molecules show moderate activity against the human tumor cell lines SF-295, HCT-8, and MDA-MB-435.
Enzymatic resolution of α-tetralols by CALB-catalyzed acetylation
Ferraz, Helena M.C.,Bianco, Graziela G.,Teixeira, Carla C.,Andrade, Leandro H.,Porto, Andre L.M.
, p. 1070 - 1076 (2008/02/08)
A series of homochiral α-tetralols, as well as their respective acetates, has been obtained by esterification of racemic tetralols, using Candida antarctica lipase (CALB-Novozym 435) as the biocatalyst. This enzyme is shown to be highly efficie
Amines substituted with a dihydronaphthalenyl, chromenyl, or thiochromenyl group, an aryl or heteroaryl group and an alkyl group, having retinoid-like biological activity
-
, (2008/06/13)
Compounds of the formula where the symbols are as defined in the specification, have retinoid agonist, antagonist or negative hormone-like biological activity.
Identification and synthesis of trinorcadalene phytoalexins formed by hibiscus cannabinus in honour of professor G. H. Neil towers 75th birthday
Bell, Alois A.,Stipanovic, Robert D.,Zhang, Jiuxu,Mace, Marshall E.,Reibenspies, Joseph H.
, p. 431 - 440 (2007/10/03)
Two trinorcadalene phytoalexins, hibiscanal (2,8-dihydroxy-4,7-dimethoxy-6-methyl-1-naph-thaldehyde) and o-hibiscanone (3,8-dimethyl-1,2-naphthoquinone), were isolated and identified from stem stele of kenaf (Hibiscus cannabinus) inoculated with the funga
A novel type of retinoic acid receptor antagonist: Synthesis and structure-activity relationships of heterocyclic ring-containing benzoic acid derivatives
Yoshimura,Nagai,Hibi,Kikuchi,Abe,Hida,Higashi,Yamanaka
, p. 3163 - 3173 (2007/10/02)
A new series of heterocyclic ring-containing benzoic acids was prepared, and the binding affinity and antagonism of its members against all-trans- retinoic acid were evaluated by in vitro assay systems using human promyelocytic leukemia (HL-60) cells. Structure-activity relationships indicated that both an N-substituted pyrrole or pyrazole (1-position) and a hydrophobic region, with these linked by a ring system, were indispensable for effective antagonism. Among the compounds evaluated, optimal antagonism was exhibited by 4-[4,5,7,8,9,10-hexahydro-7,7,10,-10-tetramethyl-1-(3- pyridylmethyl)anthra[1,2-b]pyrrol-3-yl]benzoic acid (31), 4-[4,5,7,8,9,10- hexahydro-7,7,10,10-tetramethyl-1-(3-pyridylmethyl)-5-thiaanthra[1,2- b]pyrrol-3-yl]benzoic acid (40), and 4-[4,5,7,8,9,10-hexahydro-7,7,10,10- tetramethyl-1-(3-pyridylmethyl)anthra[2,1-d]pyrazol-3-yl]benzoic acid (55), all of which possess a 3-pyridylmethyl group at the five-membered ring nitrogen atom.
SYNTHESIS OF (+/-)-HERITOL
Zubaidha, P. K.,Chavan, Subhash P.,Racheria, Uday S.,Ayyangar, Nagaraj R.
, p. 5759 - 5768 (2007/10/02)
Synthesis of (+/-)-heritol and epi-heritol is described.The key step is the osmylation of the unsaturated ester 9a.Osmylation is used as a tool to construct the α,β-unsaturated γ-lactone system.
Structure-activity relationship of miltirone, an active central benzodiazepine receptor ligand isolated from Salvia miltiorrhiza bunge (Danshen)
Chang,Chui,Tan,Yang,Zhong,Lee,Sham,Wong
, p. 1675 - 1692 (2007/10/02)
Twenty one o-quinonoid-type compounds and one coumarin-type compound related to miltirone (1) have been synthesized with the aim to identify the key structural elements involved in miltirone's interaction with the central benzodiazepine receptor. On the basis of their inhibition of [3H]flunitrazepam binding to bovine cerebral cortex membranes, it is apparent that ring A of miltirone is essential for affinity. Although increasing the size of ring A from six-membered to seven- and eight-membered is well-tolerated, the introduction of polar hydroxyl groups greatly reduces binding affinity. The presence of 1,1-dimethyl groups on ring A is, however, not essential. On the other hand, the isopropyl group on ring C appears to be critical for binding as its removal decreases affinity by more than 30-fold. It can, however, be replaced with a methyl group with minimal reduction in affinity. Finally, linking ring A and B with a -CH2CH2- bridge results in analogue 89, which is 6 times more potent than miltirone at the central benzodiazepine receptor (IC50 = 0.05 μM).
