Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Pyrido pyrimidines, synthesis

Oxazolo[5,4-d]pyrimidines, synthesis and reactivity of 86AKZ211. Perimidines (naphtho[l,8-general review 81 UK 1559. Pyrido[l,2-fl]pyrimidines, chemistry of 83AHC(33)241. [Pg.333]

Pyrido[3,2-b]pyrimidines, synthesis, reactivity, and biological activity 86KFZ713. [Pg.333]

The cyclization of 5-amino-6-methyl-3-phenylpyrimidin-4(377)-one with selenium dioxide furnishes 6-phenylisoselenazo[4,3- /]pyrimidin-7(677)-one, starting material for a pyrido[3,2-t/]pyrimidine synthesis.44 In the presence of a base the selenazole ring is converted by various methylene-active compounds (XCH2Y) into a substituted pyridine moiety. [Pg.174]

Analysis of the analgesic and anti-inflammatory effects of rimazolium, a pyrido-pyrimidine derivative, compared with that of prostaglandin synthesis inhibitors and morphine... [Pg.130]

The use of acrolein in the technical gas-phase synthesis of pyridine derivatives has been reviewed, as has the formation of pyridines, pyrimidines, pyrido-pyrimidines, and pyrazolopyrimidines by ring-closure of jS -enol- and /3 -enamino-carbonyl compounds. ... [Pg.147]

Many of these reactions occur in the course of synthesis of fully or partly unsaturated products after initial ring closure, giving rise to more unsaturated systems, e.g. in the pyrido[2,3-pipemidic acids (Section 2.15.4.1) and their derivatives, e.g. (16a) -> (17) (74JAP(K)7444000). Examples are also found in the pyrido[3,2-[Pg.205]

An unusual final example of a synthesis from pyridines involves the 4-lithiotetra-chloropyridine (128), which with two moles of benzonitrile gave the trichlorodiphenyl-pyrido[3,4- f]pyrimidine (130) via the intermediate (129) (72JCS(P1)2190). The 2-lithio analogue gave the corresponding [3,2-c] derivative. [Pg.217]

Methanol, l-isoquinolyl(phenyl)-confonnation, 2, 110 Methanol, pyrimidinyl-synthesis, 3, 113 Methanol, tetrahydropyran-2-yl-microwave spectra, 3, 625 Methantheline as neurotransmitter, 1, 175 therapeutic properties, 3, 882 Methaphenilene biological activity, 4, 911 Methapyrilene biological activity, 4, 911 toxicity, 4, 912 Methaqualone, 3, 150 as anticonvulsant, 1, 166 pyrido[2,3-d]pyrimidine analogues metabolism, 3, 205 as sedative, 1, 166 Metharbitone as anticonvulsant, 1, 166 Methazolamide... [Pg.702]

H,4H-Oxazolo[5,4,3-y]pyrido[3,2-g]quinolin-4-one, 8-hydroxymethyl-6-methyl — see Nybomyein 5H-Oxazolo[2,3-[Pg.731]

Pyrido[2,3-(i]pyrimidine, 6-cyano-O-tosylation, 3, 211 Pyrido[2,3-(i]pyrimidine, 3,4-dihydro-synthesis, 3, 217... [Pg.800]

Pyrido[3,2-d]pyrimidine, 6,7-dihydroxy-synthesis, 3, 227 Pyrido[3,2-(i]pyrimidine, halo-reactions, 3, 214... [Pg.800]

Pyrido[2,3-d]pyrimidine-6-carboxylic acid, 5,6,7,8-tetrahydro-5-0x0-synthesis, 3, 221... [Pg.800]

Pyrido[3,4-d]pyrimidine-2,4-dione synthesis, 3, 215 Pyridopyrimidines, 3, 201 iV-alkylations, 3, 206 biological activity, 3, 260-261 1-electron reductions, 3, 207 IR spectra, 3, 204 mass spectra, 3, 204 MO calculations, 3, 204 NMR, 3, 202, 203 nucleophilic substitution, 3, 213 8-nucleosides synthesis, 3, 206 physical properties, 3, 201-205 protonation, 3, 206 radical reactions, 3, 215 reactions with water, 3, 207 reduced... [Pg.800]

See other pages where Pyrido pyrimidines, synthesis is mentioned: [Pg.801]    [Pg.877]    [Pg.877]    [Pg.254]    [Pg.801]    [Pg.877]    [Pg.877]    [Pg.601]    [Pg.201]    [Pg.801]    [Pg.877]    [Pg.801]    [Pg.877]    [Pg.877]    [Pg.230]    [Pg.246]    [Pg.800]    [Pg.800]    [Pg.800]    [Pg.800]    [Pg.800]    [Pg.800]    [Pg.800]    [Pg.800]    [Pg.800]    [Pg.801]    [Pg.801]   
See also in sourсe #XX -- [ Pg.10 , Pg.32 , Pg.39 , Pg.49 , Pg.53 , Pg.54 , Pg.55 , Pg.58 , Pg.63 , Pg.64 , Pg.66 , Pg.72 , Pg.73 , Pg.76 , Pg.150 , Pg.171 , Pg.177 , Pg.178 ]



SEARCH



3- -4//-pyrido pyrimidine

Pyrimidines, synthesis

© 2024 chempedia.info