CXV.—Acetone derivatives of d-fructose

Irvine, James Colquhoun; Garrett, C.

doi:10.1039/ct9109701277

Cited by 19 publications

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“…For initial feasibility experiments, 1,2-O-isopropylidene-␤-D-fructopyranose (9), 16 obtained from controlled hydrolysis of 1,2:4,5di-O-isopropylidene-␤-D-fructopyranose 17 , as well as 2,3-O-isopropylidene-␣-Lsorbofuranose (11), obtained from partial hydrolysis of 2,3:4,6-di-O-isopropylidene-␣-L-sorbofuranose, 18,19 were chosen due to their easy availability. For initial feasibility experiments, 1,2-O-isopropylidene-␤-D-fructopyranose (9), 16 obtained from controlled hydrolysis of 1,2:4,5di-O-isopropylidene-␤-D-fructopyranose 17 , as well as 2,3-O-isopropylidene-␣-Lsorbofuranose (11), obtained from partial hydrolysis of 2,3:4,6-di-O-isopropylidene-␣-L-sorbofuranose, 18,19 were chosen due to their easy availability.…”

Section: Resultsmentioning

confidence: 99%

Enzymatic O-Galactosylation of Selected Free as Well as Partially Protected Ketohexoses

Eder¹,

Lundt²,

Stütz³

et al. 2001

J Carbohydr Chem

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Section: Resultsmentioning

confidence: 99%

Enzymatic O-Galactosylation of Selected Free as Well as Partially Protected Ketohexoses

Eder¹,

Lundt²,

Stütz³

et al. 2001

J Carbohydr Chem

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“…The various compounds obtained by condensation of fructose with acetone have been fully examined by Irvine and Garrett (54). In the course of this work a syrupy substance was obtained which was considered to be a mixture of the a-and y8-f orms of 2 : 3-fructosemonoacetone.…”

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University of Saint Andrews five hundredth anniversary. Memorial volume of scientific papers contributed by members of the university

M'Intosh¹

1911

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CONCRETE REPRESENTATIONS OF which antipodal points are distinct. 1 In the Cayley-Klein representation spherical geometry is conveniently excluded, since two lines only intersect once. 7. Consider next the case where the absolute is a real proper conic. This divides the plane into two distinct regions which we may call the interior and the exterior, and it is of no moment whether the conic be an ellipse, a parabola, or a hyperbola. It is convenient to picture it as an ellipse. If the points P, Q are in different regions, then (PQ, XY) is negative and log (PQ, X Y) is a complex number of the form a+(2n+l)iir, or simply a+iir, to take its principal value. a is zero only when (PQ, X Y) =-1. K log (PQ, X Y) also will in general be complex whatever be the value of K. Of course it is possible to choose K=aitr, which would make the distance real, but for points in the vicinity of Q the distance (PQ) would still be complex. On the other hand, if P, Q are in the same region, (PQ, X Y) is either real, when X, Y are real, or purely imaginary, when X, Y are conjugate imaginary points. ' Next to determine the distance function ; let P, Q become P', Q' (Fig. 4). The orthogonal circle PQXY becomes a straight line P'Q'X'Y', and OPP', OQQ', etc., ar collinear since angles at are unaltered.

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Modellversuche zur Theorie der alkoholischen Gärung, III.: Der Abbau der α‐Diaceton‐fructose‐schwefelsäure

Ohle¹,

Coutsicos²

1930

Ber. dtsch. Chem. Ges. A/B

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In der erstea Mitteilung dieser Reihe konnte gezeigt werden, dafi die (3 -D i a c e t on -f r u c t ose -I -schwef e l s a u r e (I) bei der O s y d a t i o n init Kaliumpernianganat in wiiBriger neutraler I,6sung intermediar das Trikaliunisalz eines S c hwe f els a ur eh a l b e s t er s der I1 y d r a t -Fo r m d e r M o n o a c e t o n -[di o x y-ace t o n yl] -ma1 o n s a u r e (11) liefert. Um diese etwas laiigatinige Bezeichnung zu vermeiden, schlagen wir vor, die Muttersubstanz (Ha) 31s F u r t o n d i s a u r e zii bezeichnen. Da unsere Saure der Z-Reihe angehort, wie ein Vergleich niit dein Z-Glycerin-aldehyd zeigt, ware also I1 aIs 2 . -M o n o ace t o n --If u r t o ii d i s a u r e -Is c h w e f e 1 s a u r e zu bezeichnen. Das Prafis p bezieht sich dabei auf den Zusammenhang mit der P-Diaceton-fructose. Inzwischen haben wir die Darstellung dieser Verbindung erheblich vertessext und vereinfacht, so dafl sie relativ leiclit zuganglich

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CXV.—Acetone derivatives of d-fructose

Cited by 19 publications

References 0 publications

Enzymatic O-Galactosylation of Selected Free as Well as Partially Protected Ketohexoses

Enzymatic O-Galactosylation of Selected Free as Well as Partially Protected Ketohexoses

University of Saint Andrews five hundredth anniversary. Memorial volume of scientific papers contributed by members of the university

Modellversuche zur Theorie der alkoholischen Gärung, III.: Der Abbau der α‐Diaceton‐fructose‐schwefelsäure

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