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Relevant bibliographies by topics / 9-tetrahydro-5H-[1

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Academic literature on the topic '9-tetrahydro-5H-[1'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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Journal articles on the topic "9-tetrahydro-5H-[1"

1

Šilhánková, Alexandra, Petr Trška, Daniela Vlková, and Miloslav Ferles. "Preparation of some derivatives of benzo[ij]quinolizine." Collection of Czechoslovak Chemical Communications 50, no. 5 (1985): 1048–56. http://dx.doi.org/10.1135/cccc19851048.

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Reaction of 1,2,3,4-tetrahydroquinoline with 1-chloro-2,3-epoxypropane afforded l-(3-chloro-2-hydroxypropyl)-l,2,3,4-tetrahydroquinoline (IIb) which was thermolabile and on heating in vacuo was converted into 2,3,6,7-tetrahydro-1H,5H-benzo[ij]quinolizin-2-ol (Ib). This compound reacted with acetic anhydride and p-toluenesulfonyl chloride to give 2-acetoxy-2,3,6,7-tetrahydro-1H,5H-benzo[ij]quinolizine (Ic) and 2-(p-toluenesulfonyloxy)-2,3,6,7-tetrahydro-1H,5H-benzo[ij]quinolizine (Id), respectively. N,N-Bis(3-chloro-2-hydroxypropyl)aniline (IIIb) on heating gave a mixture of cis- and trans-2,3,

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2

Li, Gong, Xiaowei Wang, Zhili Zhang, and Junyi Liu. "1-Ethoxymethyl-5-methyl-9-phenyl-6,7,8,9-tetrahydro-1H-pyrimido[4,5-b][1,4]diazepine-2,4(3H,5H)-dione." Acta Crystallographica Section E Structure Reports Online 68, no. 5 (2012): o1396. http://dx.doi.org/10.1107/s1600536812014985.

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3

Nataliya, Demchenko, Suvorova Zinaida, Fedchenkova Yuliia, et al. "Synthesis and antibacterial activity of 3-arylaminomethyl-1-(2-oxo-2-arylethyl)-6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a] azepin-1-ium bromides and aryl-(4-R1-phenyl-5,6,7,8-tetrahydro-2,2a,8a-triazacyclopenta[cd]azulen-1-ylmethyl)-amines." ScienceRise: Pharmaceutical Science, no. 6(34) (December 30, 2021): 51–57. https://doi.org/10.15587/2519-4852.2021.249480.

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<strong>The aim </strong>of this work is to develop methods of synthesis of 3-arylaminomethyl-1-(2-oxo-2-arylethyl)-6,7,8,9-tetrahydro-5H-[1,2,4]triazolo[4,3-a]azepin-1-ium bromides and aryl-(4-R<sup>1</sup>-phenyl-5,6,7,8-tetrahydro-2,2a,8a-triazacyclopenta[cd]azulen-1-ylmethyl)-amines and to study their antimicrobial activity against strains of gram-positive and gram-negative bacteria as well as yeast fungi. <strong>Materials and methods. </strong><sup>1</sup>Н NMR spectra were recorded on Bruker 400 spectrometer operating at frequency of 400 MHz. Antimicrobial activity of the comp

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4

Kliegel, Wolfgang, Jörg Metge, Steven J. Rettig, and James Trotter. "Aromatic aldonitrones of 2-(hydroxyamino)benzyl alcohol and their cyclic isomers. Crystal and molecular structures of a 1-hydroxy-1,2-dihydro-4H-3,1-benzoxazine, a boron chelate, and its parent nitrone ligand." Canadian Journal of Chemistry 76, no. 4 (1998): 389–99. http://dx.doi.org/10.1139/v98-023.

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The synthesis of a series of C-aryl-N-[2-(hydroxymethyl)phenyl]nitrones, 5 (that can also exist under certain conditions as isomeric 1-hydroxy-2-aryl-1,2-dihydro-4H-3,1-benzoxazines, 8), via 2-(hydroxyamino)benzyl alcohol, 4, and their subsequent reactions with oxybis(diphenylborane), (Ph2B)2O, leading to the 5-(arylmethylene)-7,7-diphenyl-6,8-dioxa- 5-azonia-7-borata-5H-6,7,8,9-tetrahydrobenzocyclo- heptenes 6 are described. Crystals of 1-hydroxy-2- (4-methoxyphenyl)- 1,2-dihydro-4H-3,1-benzoxazine, 8b, are monoclinic, a = 9.379(2), b = 10.699(2), c = 12.9392(7) Å, β = 99.916(2)°, Z = 4 (two

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5

Luo, Zhonghua, Guodong Sun, Guowei Wang, Xin Zhang, Yang Zhang, and Ji Zhang. "Efficient and Scalable Enantioselective Synthesis of a Key Intermediate for Rimegepant: An Oral CGRP Receptor Antagonist." Pharmaceutical Fronts 06, no. 01 (2024): e62-e68. http://dx.doi.org/10.1055/s-0044-1780495.

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Rimegepant is a calcitonin gene-related peptide antagonist used for acute treatment and prevention of migraine. We herein attempt to explore an efficient and practiced method for scale-up, regio- and enantioselective synthesis of (R)-9-hydroxy-6,7,8,9-tetrahydro-5H-cyclohepta[b]pyridin-5-one (1), a key intermediate of rimegepant. In this work, a Ru-catalyzed asymmetric transfer hydrogenation (ATH) reaction was a key step. The optimization of the reaction conditions involved exploring the reaction parameters including catalysts, bases, and solvents. The results suggested that the Ru-catalyzed A

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6

Mansur, Muhammad Abdullah Al, M. Mahboob Ali Siddiqi, Md Ahedul Akbor, and Koushik Saha. "Phytochemical Screening and GC-MS Chemical Profiling of Ethyl Acetate Extract of Seed and Stem of Anethum sowa Linn." Dhaka University Journal of Pharmaceutical Sciences 16, no. 2 (2018): 187–94. http://dx.doi.org/10.3329/dujps.v16i2.35256.

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Tahe phytochemical constituents from the ethyl acetate extracts of seed and stem of Anethum sowa were identified by qualitative and gas chromatography-mass spectroscopy (GC-MS). Qualitative analyses exhibited the presence of alkaloids, flavonoids, tannins, carbohydrate, steroids and terpenoids in both extracts. In GC-MS analysis of A. sowa 6 notable peaks (3,4,4a,5,6,7,8,9-Octahydro-2H-benzocyclohepten-2-one, 2,2,4,6,7-Pentamethyl- 1,2,3,4-tetrahydro quinoline, 5-Ethyl-2-methyl-pyridin-4-amine, 2-(2-Furyl) pyridine, 9-Ethyl 9-borabicyclo-[3.3.1]- nonane and 7-Methylenebicyclo-[4.2.0]-octane) a

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7

Banwell, MG, and CJ Cowden. "Convergent Routes to the [1,3]Dioxolo[4,5-j]phenanthridin-6(5H)-one and 2,3,4,4a-Tetrahydro[1,3]dioxolo[4,5-j]phenanthridin-6(5H)-one Nuclei. Application to Syntheses of the Amaryllidaceae Alkaloids Crinasiadine, N-Methylcrinasiadine and Trisphaeridine." Australian Journal of Chemistry 47, no. 12 (1994): 2235. http://dx.doi.org/10.1071/ch9942235.

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Convergent routes to the title nuclei, (1) and (6), have been developed. Thus, Suzuki coupling of boronic acid (8) with aryl bromide (9) gave the biarylylcarbamate (7) which, on treatment with phosphorus oxychloride (POCl3), underwent Bischler-Napieralski cyclization to give, after acid hydrolysis, the Amaryllidaceae alkaloid crinasiadine (1). The cyclization reaction proceeds via an intermediate chlorophenanthridine (11) which can be isolated and N- methylated. Hydrolysis of the resulting iminium species (17) then afforded N- methylcrinasiadine (2). On the other hand, hydrogenolytic dechlorin

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8

Vejdělek, Zdeněk, and Miroslav Protiva. "Potential antidepressants and tranquillizers: Synthesis of some 9-(aminoalkoxy)-2,3,6,7-tetrahydro-1H,5H-benzo[ij] quinolizines and 1-(substituted amino)-3-(1-naphthoxy)-2-propanols." Collection of Czechoslovak Chemical Communications 55, no. 5 (1990): 1290–96. http://dx.doi.org/10.1135/cccc19901290.

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The hydrobromide of 9-hydroxyjulolidine was reacted with hydrochloride of 2-dimethylaminoethyl chloride, 2-(1-pyrrolidinyl)ethyl chloride, 2-(1-piperidinyl)ethyl chloride, and 3-dimethylaminopropyl chloride in ethanol in the presence of sodium ethoxide to give the title bases II-V which were transformed to dihydrochlorides. Heating of 1,2-epoxy-3-(1-naphthoxy)propane with 2,3,3-trimethyl-2-butylamine, 1-methylcyclopentylamine, 1-methylcyclohexylamine, 1-methylcycloheptylamine, and 10,11-dihydroxydibenzo[a,d]cycloheptene-5-amine in ethanol afforded the second part of the title compounds (VII-XI

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9

Soman, Anjaly, and K. N. Narayanan Unni. "Enhancement in electron transport and exciton confinement in OLEDs: role of n-type doping and electron blocking layers." European Physical Journal Applied Physics 86, no. 1 (2019): 10201. http://dx.doi.org/10.1051/epjap/2019190020.

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Doped transport layers are essential for achieving high efficiency in organic light emitting diodes (OLEDs). We have studied the effect of doping the electron transport layer (ETL), tris-(8-hydroxyquinoline) aluminum (Alq3) with different percentages of lithium fluoride (LiF). We have also studied the effect of different electron blocking layers (EBLs) such as Tris (4-carbazoyl-9-ylphenyl)amine (TCTA), N,N'-Bis (naphthalen-1-yl)-N,N'-bis(phenyl)-benzidine(NPB), and Di-[4-(N,N-di-p-tolyl-amino)-phenyl]cyclohexane (TAPC) in an Alq3:2,3,6,7-Tetrahydro-1,1,7,7,-tetramethyl-1H, 5H, 11H −10-(2-benzo

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10

DeWald, Horace A., Thomas G. Heffner, Juan C. Jaen, et al. "Synthesis and dopamine agonist properties of (+)-trans-3,4,4a,10b-tetrahydro-4-propyl-2H,5H-[1]benzopyrano[4,3-b]-1,4-oxazin-9-ol and its enantiomers." Journal of Medicinal Chemistry 33, no. 1 (1990): 445–50. http://dx.doi.org/10.1021/jm00163a068.

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