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The Synthesis and Crystal Structure of N-tert-Butyl-3-(tert-butylimino)-2-nitropropen-1 -amine

Autor: Daryl L. Ostercamp, Lisa M. Preston, Kay D. Onan

Publikováno v: Zeitschrift für Naturforschung B. 48:1138-1142

The unit cell of N-tert-butyl-3-(tert-butylimino)-2-nitropropen-1-amine (4) is monoclinic, space group P21/C, with a = 9.669(4), b = 16.415(6), c = 17.341 (7) Å, and Z = 4. Hydrolysis of 4 leads to (E)-3-(N-tert-butylamino)-2-nitro-2-propenal (5), w

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::575b49daad7068d89d5751d02d970bfe
https://doi.org/10.1515/znb-1993-0817

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ChemInform Abstract: The Synthesis and Crystal Structure of N-tert-Butyl-3-(tert-butylimino) -2-nitropropen-1-amine

Autor: Daryl L. Ostercamp, Kay D. Onan, Lisa M. Preston

Publikováno v: ChemInform. 24

The unit cell of N-tert-butyl-3-(tert-butylimino)-2-nitropropen-1-amine (4) is monoclinic, space group P2 1 /C, with a=9.669(4), b=16.415(6), c=17.341(7)A, and Z=4. Hydrolysis of 4 leads to (E)-3-(N-tert-butylamino)-2-nitro-2-propenal (5), whose unit

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::5e024cbffe7a0efd22b100cc513d5468
https://doi.org/10.1002/chin.199350136

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Convenient syntheses of stereoisomeric 1,2-epoxyestr-4-en-3-ones, putative intermediates in estradiol metabolism

Autor: Nguyen Phuoc Van, Dirshaye Menberu, Kay D. Onan, Philip W. Le Quesne

Publikováno v: The Journal of Organic Chemistry. 57:2100-2104

New synthetic sequences are described for 17β-hydroxy-1β,2β- and -1α,2α-epoxyestr-4-en-3-one, which are putative intermediates in the metabolism of estradiol to the 2,3- and 3,4-catecholestrogens, as well as the synthetic precursors of choice fo

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https://doi.org/10.1021/jo00033a035

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Synthesis and estrogen receptor binding of novel 11 beta-substituted estra-1,3,5(10)-triene-3,17 beta-diols

Autor: Robert N. Hanson, Elio Napolitano, Rita Fiaschi, Kay D. Onan

Publikováno v: Journal of medicinal chemistry. 33(12)

As part of our program to develop estrogenic radioligands for use in nuclear medicine, a study was undertaken to investigate the effect of substituents on the receptor affinity of putative radiochemicals. In the study a synthetic strategy directed to

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https://pubmed.ncbi.nlm.nih.gov/2258901

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Synthesis characterization & catalytic properties of copper(II) complexes derived from biologically active thiosemicarbazones

Autor: Kay D. Onan, Ahmed A. Eltoukhy

Publikováno v: Journal of Inorganic Biochemistry. 47:49

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::d2f4d9016f5f32d59fcc7fb1e515d1c2
https://doi.org/10.1016/0162-0134(92)84126-8

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Novel synthesis of 2-fluoroestradiol from 19-Cortestosterone: Biomimetic oxidative defluorination to 2-hydroxyestradiol

Autor: Kay D. Onan, Kariman Allam, Philip W. Le Quesne, Robert H. Purdy, Samy Abdel-Baky

Publikováno v: Steroids. 53:649-661

A new, short synthetic route to 2-fluoroestradiol from 19-nortestosterone is described which gives the target compound in an approximately 25% overall yield. Oxidative defluorination of 2-fluoroestradiol to 2-hydroxyestradiol via treatment with Frém

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::fbd5fe4cfbc6272daec428c25b3c8287
https://doi.org/10.1016/0039-128x(89)90058-5

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Studies on rearrangements in derivatives of grandiflorenic acid. Part 1. Reaction of the epoxides of methyl (–)-kaur-9(11)-en-19-oate and (–)-kaur-9(11)-en-19-oic acid with boron trifluoride-diethyl ether either in the absence or in the presence of N-nitrosomethylurea. Formation of two diterpenes of a new skeletal type

Autor: Kay D. Onan, Alfonso Martín, Andrew T. McPhail, Antonieta Castaldi Spinelli, Alfredo Usubillaga, Tatsuhiko Nakano

Publikováno v: J. Chem. Soc., Perkin Trans. 1. :1693-1697

On treatment with boron trifluoride-diethyl ether in benzene the epoxide (3b) of methyl (–)-kaur-9(11)-en-19-oate (2c) yielded an aldehyde (5a). During the epoxidation of compound (2c) with m-chloroperbenzoic acid it was observed that in the presen

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https://doi.org/10.1039/p19850001693

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Transmetalation reactions of tetranuclear copper(II) complexes. 2. Stoichiometry and products of reaction of [(DENC)CuCl]4O2, [(DENC)CuCl]4(CO3)2, [(DENC)CuCl]4Cl4, and (DENC)4Cu4Cl6O (DENC = N,N-diethylnicotinamide) with Ni(NS)2 , the kinetics of product isomerization in aprotic solvents, and inhibition of copper-catalyzed phenolic oxidative coupling by dioxygen through transmetalation

Autor: Kay D. Onan, Mikelis Veidis, Guang Zuan Cai, Ahmed A. Eltoukhy, Geoffrey Davies, Thomas R. Gilbert

Publikováno v: Journal of the American Chemical Society. 106:4596-4605

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::19f804d262aaa06a3888120bfdf58743
https://doi.org/10.1021/ja00328a050

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Stereochemically complementary reductions of indoles

Autor: Andrew T. McPhail, Pirouz Tahbaz, Kay D. Onan, Joel G. Berger

Publikováno v: Tetrahedron Letters. 24:2469-2472

Indoles containing a 2, 3-fused bridged ring undergo highly stereoselective reduction to cis -fused derivatives with the endo - exo stereochemistry depending on choice of reducing agent.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::2cf6187895e6c3f16eed340c76dc22a7
https://doi.org/10.1016/s0040-4039(00)81957-7

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