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Showing 1 to 12 of 58 entries
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Hydrogen-Transfer-Mediated α-Functionalization of 1,8-Naphthyridines by a Strategy Overcoming the Over-Hydrogenation Barrier.

Angewandte Chemie (International ed. in English)

Chen XW, Zhao H, Chen CL, Jiang HF, Zhang M.
PMID: 28926172
Angew Chem Int Ed Engl. 2017 Nov 06;56(45):14232-14236. doi: 10.1002/anie.201707702. Epub 2017 Oct 05.

A general catalytic hydrogen transfer-mediated α-functionalization of 1,8-naphthyridines is reported for the first time that benefits from a hydrogen transfer-mediated activation mode for non-activated pyridyl cores. The pyridyl α-site selectively couples with the C8-site of various tetrahydroquinolines (THQs) to...

2,8-Disubstituted-1,6-Naphthyridines and 4,6-Disubstituted-Isoquinolines with Potent, Selective Affinity for CDK8/19.

ACS medicinal chemistry letters

Mallinger A, Schiemann K, Rink C, Sejberg J, Honey MA, Czodrowski P, Stubbs M, Poeschke O, Busch M, Schneider R, Schwarz D, Musil D, Burke R, Urbahns K, Workman P, Wienke D, Clarke PA, Raynaud FI, Eccles SA, Esdar C, Rohdich F, Blagg J.
PMID: 27326329
ACS Med Chem Lett. 2016 Mar 28;7(6):573-8. doi: 10.1021/acsmedchemlett.6b00022. eCollection 2016 Jun 09.

We demonstrate a designed scaffold-hop approach to the discovery of 2,8-disubstituted-1,6-naphthyridine- and 4,6-disubstituted-isoquinoline-based dual CDK8/19 ligands. Optimized compounds in both series exhibited rapid aldehyde oxidase-mediated metabolism, which could be abrogated by introduction of an amino substituent at C5 of...

Study of the Hetero-[4+2]-Cycloaddition Reaction of Aldimines and Alkynes. Synthesis of 1,5-Naphthyridine and Isoindolone Derivatives.

The Journal of organic chemistry

Alonso C, González M, Palacios F, Rubiales G.
PMID: 28537387
J Org Chem. 2017 Jun 16;82(12):6379-6387. doi: 10.1021/acs.joc.7b00977. Epub 2017 Jun 05.

Both experimental and computational studies for the cycloaddition reaction between N-(3-pyridyl)aldimines and acetylenes where 1,5-naphthyridines are obtained are reported. The reaction of benzaldimine with a methoxycarbonyl group in position 2 with phenyl acetylene, styrene, and indene afforded polycyclic isoindolone...

Cytotoxicity and Structure-activity Relationships of Naphthyridine Derivatives in Human Cervical Cancer, Leukemia, and Prostate Cancer.

The Korean journal of physiology & pharmacology : official journal of the Korean Physiological Society and the Korean Society of Pharmacology

Hwang YJ, Chung ML, Sohn UD, Im C.
PMID: 24381501
Korean J Physiol Pharmacol. 2013 Dec;17(6):517-23. doi: 10.4196/kjpp.2013.17.6.517. Epub 2013 Dec 16.

Naphthyridine compounds are important, because they exhibit various biological activities including anticancer, antimicrobial, and anti-inflammatory activity. Some naphthyridines have antimitotic effects or demonstrate anticancer activity by inhibiting topoisomerase II. These compounds have been investigated as potential anticancer agents, and...

Oxacalixarenes and oxacyclophanes containing 1,8-naphthyridines: a new class of molecular tweezers with concave-surface functionality.

Chemical communications (Cambridge, England)

Katz JL, Geller BJ, Foster PD.
PMID: 17325794
Chem Commun (Camb). 2007 Mar 14;(10):1026-8. doi: 10.1039/b615336d. Epub 2007 Feb 02.

The first examples of oxacalix[4]arenes and [1(4)]oxacyclophanes bearing 1,8-naphthyridine units are reported, and these systems function as molecular tweezers containing inner-cavity hydrogen bond acceptors.

1,2,3,4-Tetrahydro-1,5-naphthyridines and related heterocyclic scaffolds: Exploration of suitable chemistry for library development.

Tetrahedron

Woo GH, Beeler AB, Snyder JK.
PMID: 19112520
Tetrahedron. 2007 Jun 18;63(25):5649-5655. doi: 10.1016/j.tet.2007.04.003.

The chemistry of 1,2,3,4-tetrahydro-1,5-naphthyridines and 2,3,4,5-tetrahydro-1H-pyrido[3,2-b]azepines has been explored with the goal of discovering reactions at N1 suitable for library development. Epoxide openings, palladium-catalyzed N-arylations, DEPBT-promoted acylations, and urea formation through the reaction with isocyanates were all successful. The...

Room temperature, copper-catalyzed amination of bromonaphthyridines with aqueous ammonia.

The Journal of organic chemistry

Anderson CA, Taylor PG, Zeller MA, Zimmerman SC.
PMID: 20550204
J Org Chem. 2010 Jul 16;75(14):4848-51. doi: 10.1021/jo100476x.

Room temperature, copper-catalyzed amination of amido-bromo-1,8-naphthyridines is reported. Use of Cu(2)O and aqueous ammonia at ambient temperature affords amination products in 10-87% yield. Bromonaphthyridines are prepared in 15-65% yield via treatment of amidonaphthyridinones with phosphorus tribromide. This methodology provides...

Rh(III)-Catalyzed Synthesis of 3-Amino-4-arylisoquinolinones from 4-Diazoisochroman-3-imines and N-Methoxybenzamides.

Organic letters

Li Z, Wu L, Chang B, Lu P, Wang Y.
PMID: 30763110
Org Lett. 2019 Mar 01;21(5):1497-1501. doi: 10.1021/acs.orglett.9b00290. Epub 2019 Feb 14.

A Rh(III)-catalyzed reaction of N-methoxybenzamides and 4-diazoisochroman-3-imines is described. This method offers a rapid entry to 3-amino-4-arylisoquinolinone architectures from readily available starting materials under mild reaction conditions. A one-pot cascade C-H bond activation/formal [4 + 2] cycloaddition mechanism is...

Dibenzopyrrolo[1,2-a][1,8]naphthyridines: Synthesis and Structural Modification of Fluorescent L-Shaped Heteroarenes.

The Journal of organic chemistry

Tateno K, Ogawa R, Sakamoto R, Tsuchiya M, Kutsumura N, Otani T, Ono K, Kawai H, Saito T.
PMID: 29231717
J Org Chem. 2018 Jan 19;83(2):690-702. doi: 10.1021/acs.joc.7b02674. Epub 2017 Dec 29.

The L-shaped, π-extended pentacycle dibenzopyrrolo[1,2-a][1,8]naphthyridine and its derivatives were synthesized using two methods: fully intramolecular [2 + 2 + 2] cycloaddition and oxidative aromatization using substituted carbodiimide and modification of an electron-rich indole ring of an L-shaped skeleton via...

Combined effect of hydrogen bonding interactions and freezing of rotameric equilibrium on the enhancement of photostability.

Physical chemistry chemical physics : PCCP

Golec B, Nawara K, Gorski A, Thummel RP, Herbich J, Waluk J.
PMID: 29717306
Phys Chem Chem Phys. 2018 May 16;20(19):13306-13315. doi: 10.1039/c8cp00726h.

The photophysics and photostability of 12,13-dihydro-5H-indolo[3,2-c]acridine (IA), a rigid bifunctional indole derivative with proton donor/acceptor functionalities, can be drastically changed by the environment. The formation of hydrogen bonds with alcohols leads to a significant decrease of the triplet formation...

Base-Mediated Hydroamination of Alkynes.

Accounts of chemical research

Patel M, Saunthwal RK, Verma AK.
PMID: 28128923
Acc Chem Res. 2017 Feb 21;50(2):240-254. doi: 10.1021/acs.accounts.6b00449. Epub 2017 Jan 27.

Inter- or intramolecular hydroamination reactions are a paradigmatic example of modern sustainable organic chemistry, as they are a catalytic, 100% atom-economical, and waste-free process of fundamental simplicity in which an amine is added to an alkyne substrate. Many enamines...

1,6-Naphthyridin-2(1.

Pharmaceuticals (Basel, Switzerland)

Oliveras JM, Puig de la Bellacasa R, Estrada-Tejedor R, Teixidó J, Borrell JI.
PMID: 34681253
Pharmaceuticals (Basel). 2021 Oct 09;14(10). doi: 10.3390/ph14101029.

Naphthyridines, also known as diazanaphthalenes, are a group of heterocyclic compounds that include six isomeric bicyclic systems containing two pyridine rings. 1,6-Naphthyridines are one of the members of such a family capable of providing ligands for several receptors in...

Showing 1 to 12 of 58 entries