Learn and talk about 8-Phenyltheophylline, Adenosine antagonists, Xanthines

8-Phenyltheophylline

Systematic (IUPAC) name
8-phenyl-1,3-dimethyl-7H-purine-2,6-dione
Clinical data
Pregnancy cat.	?
Legal status	?
Identifiers
CAS number	961-45-5^N
ATC code	?
PubChem	CID 1922
ChemSpider	1846^Y
ChEMBL	CHEMBL62350^Y
Chemical data
Formula	C₁₃H₁₂N₄O₂
Mol. mass	256.259 g/mol
SMILES c3ccccc3-c(nc12)nc2n(C)c(=O)n(C)c1=O
InChI InChI=1S/C13H12N4O2/c1-16-11-9(12(18)17(2)13(16)19)14-10(15-11)8-6-4-3-5-7-8/h3-7H,1-2H3,(H,14,15)^Y Key:PJFMAVHETLRJHJ-UHFFFAOYSA-N^Y
N (what is this?) (verify)

8-Phenyltheophylline (8-Phenyl-1,3-dimethylxanthine, 8-PT) is a drug derived from the xanthine family which acts as a potent and selective antagonist for the adenosine receptors A₁ and A_2A, but unlike other xanthine derivatives has virtually no activity as a phosphodiesterase inhibitor.^[1]^[2]^[3] It has stimulant effects in animals with similar potency to caffeine.^[4] Coincidentally 8-phenyltheophylline has also been found to be a potent and selective inhibitor of the liver enzyme CYP1A2 which makes it likely to cause interactions with other drugs which are normally metabolised by CYP1A2.^[5]

References [edit]

^ Scotini E, Carpenedo F, Fassina G (February 1983). "New derivatives of methyl-xanthines: effect of thiocaffeine thiotheophylline and 8-phenyltheophylline on lipolysis and on phosphodiesterase activities". Pharmacological Research Communications 15 (2): 131–43. PMID 6844374.
^ Rabe KF, Magnussen H, Dent G (April 1995). "Theophylline and selective PDE inhibitors as bronchodilators and smooth muscle relaxants". The European Respiratory Journal : Official Journal of the European Society for Clinical Respiratory Physiology 8 (4): 637–42. PMID 7664866.
^ Howell LL, Morse WH, Spealman RD (September 1990). "Respiratory effects of xanthines and adenosine analogs in rhesus monkeys". The Journal of Pharmacology and Experimental Therapeutics 254 (3): 786–91. PMID 2395111.
^ Spealman RD (1988). "Psychomotor stimulant effects of methylxanthines in squirrel monkeys: relation to adenosine antagonism". Psychopharmacology 95 (1): 19–24. PMID 3133696.
^ Murray S, Odupitan AO, Murray BP, Boobis AR, Edwards RJ (March 2001). "Inhibition of human CYP1A2 activity in vitro by methylxanthines: potent competitive inhibition by 8-phenyltheophylline". Xenobiotica 31 (3): 135–51. doi:10.1080/00498250110043292. PMID 11465391.

Adenosinergics

Receptor
ligands

Agonists	2-(1-Hexynyl)-N-methyladenosine 2-Cl-IB-MECA 2'-MeCCPA 5'-N-ethylcarboxamidoadenosine ATL-146e BAY 60–6583 CCPA CGS-21680 CP-532,903 GR 79236 LUF-5835 LUF-5845 N⁶-Cyclopentyladenosine Regadenoson SDZ WAG 994 UK-432,097

Antagonists	8-Phenyl-1,3-dipropylxanthine Acefylline Aminophylline Bamifylline Caffeine CGS-15943 8-Chlorotheophylline CPX CVT-6883 Dimethazan DPCPX Fenethylline Istradefylline KF-26777 MRE3008F20 MRS-1220 MRS-1334 MRS-1706 MRS-1754 MRS-3777 Paraxanthine Pentoxifylline Preladenant Propentofylline PSB-10 PSB-11 PSB 36 PSB-603 PSB-788 PSB-1115 Rolofylline SCH-442,416 SCH-58261 Theobromine Theophylline VUF-5574 ZM-241,385

Reuptake
inhibitors

Plasmalemmal

ENT inhibitors	Dilazep Dipyridamole Hexobendine Pentoxifylline Propentofylline Barbituates Ethanol Benzodiazepines

Vesicular

VNT inhibitors

v t e Stimulants (N06B)

Adamantanes	Adaphenoxate Adapromine Amantadine Bromantane Chlodantane Gludantane Memantine Midantane

Adenosine antagonists	8-Chlorotheophylline 8-Cyclopentyltheophylline 8-Phenyltheophylline Aminophylline Caffeine CGS-15943 Dimethazan Paraxanthine SCH-58261 Theobromine Theophylline

Alkylamines	Cyclopentamine Cypenamine Cyprodenate Heptaminol Isometheptene Methylhexaneamine Octodrine Propylhexedrine Tuaminoheptane

Arylcyclohexylamines	Benocyclidine Dieticyclidine Esketamine Eticyclidine Gacyclidine Ketamine Phencyclamine Phencyclidine Rolicyclidine Tenocyclidine Tiletamine

Benzazepines	6-Br-APB SKF-77434 SKF-81297 SKF-82958

Cholinergics	A-84,543 A-366,833 ABT-202 ABT-418 AR-R17779 Altinicline Anabasine Arecoline Cotinine Cytisine Dianicline Epibatidine Epiboxidine GTS-21 Ispronicline Nicotine PHA-543,613 PNU-120,596 PNU-282,987 Pozanicline Rivanicline Sazetidine A SIB-1553A SSR-180,711 TC-1698 TC-1827 TC-2216 TC-5619 Tebanicline UB-165 Varenicline WAY-317,538

Convulsants	Anatoxin-a Bicuculline DMCM Flurothyl Gabazine Pentetrazol Picrotoxin Strychnine Thujone

Eugeroics	Adrafinil Armodafinil CRL-40941 Modafinil

Oxazolines	4-Methylaminorex Aminorex Clominorex Cyclazodone Fenozolone Fluminorex Pemoline Thozalinone

Phenethylamines	1-(4-Methylphenyl)-2-aminobutane 1-Phenyl-2-(piperidin-1-yl)pentan-3-one 1-Methylamino-1-(3,4-methylenedioxyphenyl)propane 2-Fluoroamphetamine 2-Fluoromethamphetamine 2-OH-PEA 2-Phenyl-3-aminobutane 2-Phenyl-3-methylaminobutane 2,3-MDA 3-Fluoroamphetamine 3-Fluoroethamphetamine 3-Fluoromethcathinone 3-Methoxyamphetamine 3-Methylamphetamine 3,4-DMMC 4-BMC 4-Ethylamphetamine 4-FA 4-FMA 4-MA 4-MMA 4-MTA 6-FNE AL-1095 Alfetamine a-Ethylphenethylamine Amfecloral Amfepentorex Amfepramone Amidephrine 2-Amino-1,2-dihydronaphthalene 2-Aminoindane 5-(2-Aminopropyl)indole 2-Aminotetralin Amphetamine (Dextroamphetamine, Levoamphetamine) Amphetaminil Arbutamine β-Methylphenethylamine β-Phenylmethamphetamine Benfluorex Benzedrone Benzphetamine BDB BOH 3-Benzhydrylmorpholine BPAP Buphedrone Bupropion Butylone Camfetamine Cathine Cathinone Chlorphentermine Cilobamine Cinnamedrine Clenbuterol Clobenzorex Cloforex Clortermine Cypenamine D-Deprenyl Denopamine Dimethoxyamphetamine Dimethylamphetamine Dimethylcathinone Dobutamine DOPA (Dextrodopa, Levodopa) Dopamine Dopexamine Droxidopa EBDB Ephedrine Epinephrine Epinine Etafedrine Ethcathinone Ethylnorepinephrine Ethylone Etilamfetamine Etilefrine Famprofazone Fencamfamine Fencamine Fenethylline Fenfluramine (Dexfenfluramine, Levofenfluramine) Fenproporex Feprosidnine Flephedrone Fludorex Furfenorex Gepefrine Hexapradol HMMA Hordenine Hydroxyamphetamine 5-Iodo-2-aminoindane Ibopamine IMP Indanylamphetamine Iofetamine Isoetarine Isoethcathinone Isoprenaline L-Deprenyl (Selegiline) Lefetamine Lisdexamfetamine Lophophine MBDB MDA MDBU MDEA MDMA MDMPEA MDOH MDPR MDPEA Mefenorex Mephedrone Mephentermine Metanephrine Metaraminol Mesocarb Methamphetamine (Dextromethamphetamine, Levomethamphetamine) Methoxamine Methoxyphenamine MMA Methcathinone Methedrone Methoxyphenamine Methylone MMDA MMDMA MMMA N-Benzyl-1-phenethylamine N,N-Dimethylphenethylamine Naphthylamphetamine Nisoxetine Norepinephrine Norfenefrine Norfenfluramine Normetanephrine L-Norpseudoephedrine Octopamine Orciprenaline Ortetamine Oxilofrine PBA PCA PHA Pentorex Pentylone Phenatine Phenpromethamine Phentermine Phenylalanine Phenylephrine Phenylpropanolamine Pholedrine PIA PMA PMEA PMMA PPAP Phthalimidopropiophenone Prenylamine Propylamphetamine Pseudoephedrine Ropinirole Salbutamol (Levosalbutamol) Sibutramine Synephrine Theodrenaline Tiflorex Tranylcypromine Tyramine Tyrosine Xylopropamine Zylofuramine

Phenmetrazines	Fenbutrazate Fenmetramide G-130 Manifaxine Morazone Oxaflozane PD-128,907 Phendimetrazine Phenmetrazine 2-Phenyl-3,6-dimethylmorpholine Pseudophenmetrazine Radafaxine

Piperazines	2C-B-BZP BZP CM156 DBL-583 GBR-12783 GBR-12935 GBR-13069 GBR-13098 GBR-13119 MeOPP MBZP Vanoxerine

Piperidines	1-Benzyl-4-(2-(diphenylmethoxy)ethyl)piperidine 1-(3,4-Dichlorophenyl)-1-(piperidin-2-yl)butane 2-Benzylpiperidine 2-Methyl-3-phenylpiperidine 3,4-Dichloromethylphenidate 4-Benzylpiperidine 4-Methylmethylphenidate Desoxypipradrol Difemetorex Diphenylpyraline Ethylphenidate Methylnaphthidate Methylphenidate (Dexmethylphenidate) N-Methyl-3β-propyl-4β-(4-chlorophenyl)piperidine Nocaine Phacetoperane Pipradrol SCH-5472

Pyrrolidines	2-Diphenylmethylpyrrolidine a-PPP a-PBP a-PVP Diphenylprolinol MDPPP MDPBP MDPV MPBP MPHP MPPP MOPPP Naphyrone PEP Prolintane Pyrovalerone

Tropanes	3-CPMT 3'-Chloro-3a-(diphenylmethoxy)tropane 3-Pseudotropyl-4-fluorobenzoate 4'-Fluorococaine AHN-1055 Altropane (IACFT) Brasofensine CFT (WIN 35,428) β-CIT (RTI-55) Cocaethylene Cocaine Dichloropane (RTI-111) Difluoropine FE-β-CPPIT FP-β-CPPIT Ioflupane (¹²³I) Norcocaine PIT PTT RTI-31 RTI-32 RTI-51 RTI-105 RTI-112 RTI-113 RTI-117 RTI-120 RTI-121 (IPCIT) RTI-126 RTI-150 RTI-154 RTI-171 RTI-177 RTI-183 RTI-193 RTI-194 RTI-199 RTI-202 RTI-204 RTI-229 RTI-241 RTI-336 RTI-354 RTI-371 RTI-386 Salicylmethylecgonine Tesofensine Troparil (β-CPT, WIN 35,065-2) Tropoxane WF-23 WF-33 WF-60

Others	2-MDP 2-Phenylcyclohexylamine 3,3-Diphenylcyclobutanamine Amfonelic acid Amineptine Amiphenazole Atipamezole Atomoxetine Bemegride Benzydamine BTQ BTS 74,398 Carphedon Ciclazindol Clofenciclan Cropropamide Crotetamide D-161 Diclofensine Dimethocaine Efaroxan Etamivan EXP-561 Fenpentadiol Gamfexine Gilutensin GSK1360707F GYKI-52895 Hexacyclonate Idazoxan Indanorex Indatraline JNJ-7925476 JZ-IV-10 Lazabemide Leptacline Levopropylhexedrine Lomevactone LR-5182 Mazindol Meclofenoxate Medifoxamine Mefexamide Methastyridone Methiopropamine N-Methyl-3-phenylnorbornan-2-amine Nefopam Nikethamide Nomifensine O-2172 Oxaprotiline PNU-99,194 Propylhexedrine PRC200-SS Rasagiline Rauwolscine Rubidium chloride Setazindol Tametraline Tandamine Thiopropamine Trazium UH-232 Yohimbine

See also Sympathomimetic amines

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8-Phenyltheophylline

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