Loading...
*  Chiral auxiliary
3. Tetrahydro-4-hydroxy-6-[2-( lH-pyrrol-l-yl)ethyl]-2H-pyran-2-one Inhibitors of HMG-CoA Reductase. 2. Effects of Introducing ...
*  Pyran
In 2H-pyran, the saturated carbon is at position 2, whereas, in 4H-pyran, the saturated carbon is at position 4. 4H-Pyran was ... The term pyran is also often applied to the saturated ring analog, which is more properly referred to as tetrahydropyran (oxane ... In chemistry, pyran, or oxine, is a six-membered heterocyclic, non-aromatic ring, consisting of five carbon atoms and one ... 4H-pyran easily disproportionates to the corresponding dihydropyran and the pyrylium ion, which is easily hydrolyzed in aqueous ...
*  Saint Piran
... or Pyran (Cornish: Peran, Latin: Piranus), died c. 480, was a 5th-century Cornish abbot and saint, supposedly of ... Piran (Pyran) March 5. Orthodox England on the 'net (St John's Orthodox Church, Colchester). Retrieved: 15 September, 2015. ...
*  Pyranol
... is pyran alcohol. 2H-Pyran-2-ol 4H-Pyran-2-ol 6H-Pyran-2-ol 2H-Pyran-3-ol 4H-Pyran-3-ol 6H-Pyran-3-ol 2H-Pyran-4-ol 4H- ...
*  Iridoid
Structurally, they are bicyclic cis-fused cyclopentane-pyrans. Cleavage of a bond in the cyclopentane ring gives rise to a ...
*  Hypernauts
The average Pyran lives about 300 years. Kulai is 342 and has an extended lifespan which is a part of the unique abilities with ... Pyrans share a common psychic bond, a sense of shared existence. The presence of a Chalim generates a critical element of the ... Without a Chalim, the Pyran race would lack a crucial psychic catalyst. No matter where she is, Kulai can sense whether or not ... led by the Pyran traitor, Paiyin. The sole purpose of the Triiad is to wipe out intelligent races, and in the process acquire ...
*  Pictet-Spengler reaction
Synthesis of Isochromanes and Related Pyran-Type Heterocycles". Synthesis (2): 187-210. doi:10.1055/s-2005-918502. Yokoyama, ...
*  Sigma-1 receptor
1. N-substituted spiro[piperidine-4,4'-thieno[3,2-c]pyrans]". Journal of Medicinal Chemistry. 51 (20): 6531-7. doi:10.1021/ ... Antagonists: Sertraline S1RA 1-benzyl-6′-methoxy-6′,7′-dihydrospiro[piperidine-4,4′-thieno[3.2-c]pyran]: putative antagonist, ...
*  Ferrier carbocyclization
It is a metal-mediated rearrangement of enol ether pyrans to cyclohexanones. Typically, this reaction is catalyzed by mercury ...
*  Crotonaldehyde
4-Dihydro-2-methoxy-4-methyl-2H-pyran". Organic Syntheses. CS1 maint: Multiple names: authors list (link) ; Collective Volume, ...
*  Aucubin
... , like all iridoids, has a cyclopentan-[C]-pyran skeleton. Iridoids can consist of ten, nine, or rarely eight carbons in ... The cyclizaton reaction to form the iridoid pyran ring may result from one of two routes: route 1 - a hydride nucleophillic ... Nangia A, Prasuna G, Rao P (1997). "Synthesis of cyclopenta[c]pyran skeleton of iridoid lactones". Tetrahedron. 53 (43): 14507- ...
*  Nocardiopsis alkaliphila
Wang, Zhiying; Fu, Peng; Liu, Peipei; Wang, Pei; Hou, Jiabo; Li, Wenjun; Zhu, Weiming (February 2013). "New Pyran-2-ones from ...
*  Coelogin
This molecule has a phenanthro[4,5-bcd]pyran structure. Coelogin and coeloginin: two novel 9,10-dihydrophenanthrene derivatives ...
*  Chelidonic acid
... is a heterocyclic organic acid with a pyran skeleton. Chelidonic acid can be prepared in two steps from diethyl ...
*  Pyranoflavonoid
The pyranoflavonoids are a type of flavonoids possessing a pyran group. Cyclocommunin is another natural pyranoflavonoid. ...
*  Dihydropyran
3,4-Dihydro-2H-pyran has a double bond at position 5; 3,6-dihydro-2H-pyran has the double bond at position 4. In IUPAC names, " ... pyran tetrahydropyran A Guide to IUPAC Nomenclature of Organic Compounds (Recommendations 1993): R-3.1.2 Hydro prefixes A Guide ... The indicated hydrogen is placed just in front of the parent hydride (pyran). Note that the position numbers of the ring- ... "dihydro" refers to the two added hydrogen atoms needed to remove one double bond from the parent compound pyran. The numbers in ...
*  Rose oxide
... is an organic compound of the pyran class of monoterpenes. The compound has a cis- and a trans-isomer, each with a ...
*  Thiopyran
... s are analogous to pyrans in which the oxygen atoms have been replaced by sulfur atoms. Thiopyrylium Thio-. ...
*  Mupirocin
The epoxide of PA-A at C10-11 is believed to be inserted after pyran formation by a cytochrome P450 such as MupO. A gene ... The formation of the pyran ring requires many enzyme-mediated steps (Figure 4). The double bond between C8 and C9 is proposed ... A knockout of mupW eliminated the pyran ring, identifying MupW as being involved in ring formation. It is not known whether ...
*  Hexose
The resulting ring structure is related to pyran, and is termed a pyranose. The ring spontaneously opens and closes, allowing ...
*  Polperro
The name Polperro derives from the Cornish Porthpyra, meaning harbour named after Pyran. However Ekwall suggests that "Pyra" or ...
*  Karrikin
The pyran part of karrikins is probably directly derived from a pyranose sugar. There is no evidence that karrikins occur ... pyran-2-one, and its potential as a preconditioning agent". Field Crops Research. 98 (2-3): 98-105. doi:10.1016/j.fcr.2005.12. ... pyran-2-ones as Germination Stimulants Present in Smoke". Journal of Agricultural and Food Chemistry. 57 (20): 9475-9480. doi: ... part of the compound is a 5-membered lactone ring while the other part of the karrikin compound is a 6-membered pyran ring. ...
*  2-Pyrone
Pyrone 2H-Pyran-2-one at Sigma-Aldrich Woodard BT, Posner G H (1999). "Recent Advances in Diels-Alder Cycloadditions Using 2- ... 2-Pyrone (α-pyrone or pyran-2-one) is an unsaturated cyclic chemical compound with the molecular formula C5H4O2. It is isomeric ...
*  4-Pyrone
... (γ-pyrone or pyran-4-one) is an unsaturated cyclic chemical compound with the molecular formula C5H4O2. It is isomeric ... Pyrone 4-Pyridone Dehydroacetic acid 4H-Pyran-4-one at Sigma-Aldrich Weygand, Conrad (1972). Hilgetag, G.; Martini, A., eds. ...
*  Williamson ether synthesis
Tanabe, Masato; Peters, Richard H. (1981). "(R,S)-Mevalonolactone-2-13C (2H-Pyran-2-one-13C, tetrahydro-4-hydroxy-4-methyl-)". ...