| pyran | A cyclic compound that may be considered the formal parent of sugars with an oxygen bridge from carbon atoms 1 to 5 (the pyranoses). (05 Mar 2000) |
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| pyran copolymer | <chemical> 2,5-furandione polymer with 1,1'-oxybis(ethene). Copolymer of divinyl ether and maleic anhydride that is acts as an immunostimulant with antineoplastic and anti-infective properties. It is used also in combination with other antineoplastic agent. Pharmacological action: antineoplastic agent, antiviral agents, interferon inducers. Chemical name: 2,5-Furandione, polymer with 1,1'-oxybis(ethene) (12 Dec 1998) |
| pyranone | A keto derivative of pyran. Synonym: pyranone. (05 Mar 2000) |
| pyranose | <chemical> Sugar structure in which the carbonyl carbon is condensed with a hydroxyl group (i.e. In a hemi acetal link), forming a ring of five carbons and one oxygen. most hexoses exist in this form, although in sucrose, fructose is found with the smaller (four carbon) furanose ring. (18 Nov 1997) |
| pyranose ring | <chemistry> A six-membered cyclic haemiacetal or ketal. (09 Jan 1998) |
| pyranosone dehydratase | <enzyme> From phanerochaete chrysosporium; acts on several osones (glycosuloses) with the preferred substrate being d-glucosone which was converted by the enzyme to cortalcerone; the pyranose form of glucosone undergoes two enzymatic dehydrations to give cortalcerone on spontaneous cyclization Registry number: EC 4.2.1.- Synonym: aldos-2-ulose dehydratase (26 Jun 1999) |
| pyrantel | <chemical> A depolarising neuromuscular-blocking agent, that causes persistent nicotinic activation resulting in spastic paralysis of susceptible nematodes. It is a drug of second-choice after benzimidazoles for treatment of ascariasis, hookworm, and pinworm infections, being effective after a single dose. Pharmacological action: antinematodal agent, neuromuscular depolarising agents. Chemical name: Pyrimidine, 1,4,5,6-tetrahydro-1-methyl-2-(2-(2-thienyl)ethenyl)-, (E)- (12 Dec 1998) |
| pyrantel pamoate | <chemical> Broad spectrum antinematodal anthelmintic used also in veterinary medicine. Pharmacological action: antinematodal agent. Chemical name: 2-Naphthalenecarboxylic acid, 4,4'-methylenebis(3-hydroxy-, compd. With (E)-1,4,5,6-tetrahydro-1-methyl-2-(2-(2-thienyl)ethenyl)pyrimidine (1:1) (12 Dec 1998) |
| pyrantel tartrate | <chemical> (e)-1,4,5,6-tetrahydro-1-methyl-2-[2-(2-thienyl)vinyl]pyrimidine tartrate (1:1). Broad spectrum anthelmintic for livestock. Synonym: banminth. Pharmacological action: anthelmintic, antinematodal agent. Chemical name: Pyrimidine, 1,4,5,6-tetrahydro-1-methyl-2-(2-(2-thienyl)ethenyl)-, (E)-, (R-(R*,R*))-2,3-dihydroxybutanedioate (1:1) (12 Dec 1998) |
Synonyms : DIVEMA, MVE-2, MVE-5, NSC-46015, Copolymer, Pyran, MVE 2, MVE 5, NSC 46015, NSC46015
Synonyms :
Synonyms :
Synonyms :
Synonyms : Antiminth, Combantrin, Embovin, Embonate, Pyrantel, Pamoate, Pyrantel
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| pyran |
a heterocyclic compound,
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| pyranose |
any sugar containing a pyran ring structure, a cyclic form that ketoses and aldoses may take in solution. See also individual sugars, e.g., glucopyranose.
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| pyranoside |
a glycoside in which the sugar is in pyranose configuration.
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| pyrantel |
a broad-spectrum anthelmintic, effective against pinworms and roundworms in humans, domestic animals, and horses; it acts as a depolarizing neuromuscular blocking agent, producing spastic paralysis of the parasite. Usually seen as the pamoate salt.
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| pyranyl |
the radical C5H5O-, derived from pyran by removal of hydrogen.
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