On the Crystal and Molecular Structure of PyCrO5.

Pedersen, Berit F.; Pedersen, Bjørn; Wiberg, Örjan

doi:10.3891/acta.chem.scand.17-0557

Cited by 24 publications

(9 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Reaction of the ethyl l-thio-derivative (7) under similar conditions with acetic anhydride was more complex, leading to a mixture of the analogous acyclic derivative (21) and the product of direct esterification ( 13), together with small amounts of the enol acetate (22) derived from the former. Conceivably this complex situation arises because the thio-substituent at C-1 is less effective than is the methoxy-group [in compound (S)] in drawing charge onto the ring oxygen atom of the ambident nucleophile, thus rendering it more susceptible to acylation.…”

Section: Oacmentioning

confidence: 99%

Photo-bromination of carbohydrate derivatives. Part 3. C-5 bromination of penta-O-benzoyl-α- and -β-D-glucopyranose; a route toD-xylo-hexos-5-ulose derivatives and α-L-idopyranosides

Ferrier¹,

Tyler²

1980

J. Chem. Soc., Perkin Trans. 1

View full text Add to dashboard Cite

Section: Oacmentioning

confidence: 99%

Photo-bromination of carbohydrate derivatives. Part 3. C-5 bromination of penta-O-benzoyl-α- and -β-D-glucopyranose; a route toD-xylo-hexos-5-ulose derivatives and α-L-idopyranosides

Ferrier¹,

Tyler²

1980

J. Chem. Soc., Perkin Trans. 1

View full text Add to dashboard Cite

“…These structures are of potassium tetraperoxychromate, containing the [CrOs] 3-anion (Storeberg & Brosset, 1960;Swalen & Ibers, 1962), triamminechromium diperoxide, (NHs)sCr04 (McLaren & Helmholz, 1959), chromium oxide diperoxide pyridine, CrOs.Py (Stomberg, 1962;Pedersen & Pedersen, 1963) and decammine-#-peroxodicobalt pentanitrate, [(NHsh0Co202](NOs)5 (Vannerberg & Brosset, 1963).…”

Section: Introductionmentioning

confidence: 99%

The crystal structure of hydrated potassium tetraperoxyditungstate(VI), K₂W₂O₁₁.4H₂O

Einstein¹,

Penfold²

1964

Acta Cryst

View full text Add to dashboard Cite

“…The residue was once more suspended in chloroform: methanol (1:1) and shaken again for 90 min. 22 The supernatant fractions were combined and evaporated by nitrogen flow at room tempera ture. The final residue was dissolved in chloroform: methanol (2:1) and stored at 0°C.…”

Section: Methodsmentioning

confidence: 99%

Lipid Composition of Aerobically and Anaerobically Propagated Brewer's Bottom Yeast

Ahvenainen

1982

Journal of the Institute of Brewing

View full text Add to dashboard Cite

Aerobically grown pitching yeast is very rich in unsaturated fatty acids and sterol esters compared to traditional, anaerobic yeast. The principal fatty acids in aerobic yeast cells are unsaturated palmitoleic and oleic acids, whereas in anaerobic cells saturated palmitic acid predominates. The difference in fatty acid distribution between aerobic and anaerobic cells is most marked in the sterol esters. The fatty acids of phospho-lipids are more stable, although remarkable differences are observed. The sterols of aerobic cells are almost entirely in esterified form and zymosterol is the principal sterol. During the first hours of fermentation a rapid synthesis of palmitoleic acid is observed when anaerobic yeast is used for pitching and the wort is aerated. The synthesis of oleic acid requires more oxygen and time than is available under normal brewing conditions. When aerobic pitching yeast is used no more unsaturated fatty acids are synthesised and the lipid stores of pitching yeast are distributed among the daughter cells. The decrease in acetate ester production by aerobic pitching yeast is concluded to be due to a decrease in acetyl CoA synthesis, which may be caused by the high proportion of unsaturated fatty acids in membrane lipids.

show abstract

On the Crystal and Molecular Structure of PyCrO5.

Cited by 24 publications

References 0 publications

Photo-bromination of carbohydrate derivatives. Part 3. C-5 bromination of penta-O-benzoyl-α- and -β-D-glucopyranose; a route toD-xylo-hexos-5-ulose derivatives and α-L-idopyranosides

Photo-bromination of carbohydrate derivatives. Part 3. C-5 bromination of penta-O-benzoyl-α- and -β-D-glucopyranose; a route toD-xylo-hexos-5-ulose derivatives and α-L-idopyranosides

The crystal structure of hydrated potassium tetraperoxyditungstate(VI), K₂W₂O₁₁.4H₂O

Lipid Composition of Aerobically and Anaerobically Propagated Brewer's Bottom Yeast

Contact Info

Product

Resources

About

On the Crystal and Molecular Structure of PyCrO5.

Cited by 24 publications

References 0 publications

Photo-bromination of carbohydrate derivatives. Part 3. C-5 bromination of penta-O-benzoyl-α- and -β-D-glucopyranose; a route toD-xylo-hexos-5-ulose derivatives and α-L-idopyranosides

Photo-bromination of carbohydrate derivatives. Part 3. C-5 bromination of penta-O-benzoyl-α- and -β-D-glucopyranose; a route toD-xylo-hexos-5-ulose derivatives and α-L-idopyranosides

The crystal structure of hydrated potassium tetraperoxyditungstate(VI), K2W2O11.4H2O

Lipid Composition of Aerobically and Anaerobically Propagated Brewer's Bottom Yeast

Contact Info

Product

Resources

About

The crystal structure of hydrated potassium tetraperoxyditungstate(VI), K₂W₂O₁₁.4H₂O