pantoyln.
/ˈpantəʊʌɪl/, /ˈpantəʊɪl/, /ˈpantɔɪl/, U.S. /ˈpæn(t)oʊˌɪl/ Chemistry.
An acyl radical, —C(O)CH(OH)C(CH3)2CH2OH, present in pantothenic acid and some related compounds. Usually attributive.
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the world > matter > chemistry > organic chemistry > organic radicals > [noun] > miscellaneous named
hydrochloruret1834
spiroil1838
acetyl1840
valeryl1852
menthyl1862
vinyl1863
acyl1864
ethoxyl1866
carbylamine1868
thymyl1868
vanillyl1876
thienyl1885
thiocarbonyl1887
adenyl1889
iodonium1894
tetrazolium1895
sulphydryl1901
phytyl1911
pantoyl1942
ribosyl1945
pipsyl1946
hexanoyl1949
thiol1951
adenylyl1953
lipoyl1960
1942 J. W. Barnett & A. F. Robinson in Biochem. Jrnl. 36 357 Dr. McIlwain..suggested a simplified nomenclature, following which we have adopted a system based on the name ‘pantoyl’ for the α:γ-dihydroxy-β:β-dimethyl-γ-butyryl radicle.
1995 Phytochemistry 40 1617 The pantoyl residue is related to central roles of metabolism through pantothenic acid and CoA.
Compounds
pantoyl lactone n. the γ-lactone of pantoic acid, C6H10O3, a degradation product of pantothenic acid and an intermediate in its synthesis.
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1944 Jrnl. Amer. Chem. Soc. 66 425/1 A pH of 3.7–4.0 was chosen since the formation of pantoyl lactone is rapid and complete in this range.
1971 Analyt. Biochem. 42 8 Pantoyl lactone..can be easily and directly evaluated by gas chromatography, providing a simpler method for the quantitation of Vitamin B5.
1995 New Scientist 25 Feb. 16/2 Three simple organic molecules which would have been abundant in the primeval soup—pantoyl lactone, Β-alanine and cysteamine—will join up to form a molecule called pantetheine if they are heated to around 40°C.
pantoyltaurine n. an analogue of pantothenic acid containing taurine in place of β-alanine, which acts as a competitive inhibitor of pantothenic acid and reduces growth in microorganisms; C8H17O6NS.
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the world > matter > chemistry > organic chemistry > organic acids > [noun] > sulphinic or sulphonic acids
pantoyltaurine1942
1942 Biochem. Jrnl. 36 366 The degree of inhibition by pantoyltaurine depends on the amount of pantothenic acid present in the medium.
1968 Compar. Biochem. & Physiol. 27 649 When pantoyltaurine..was incorporated into the culture media, inhibition of growth [of Trypanosoma lewisi] was observed.
This entry has been updated (OED Third Edition, March 2005; most recently modified version published online March 2022).
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n.1942