𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Deuterium labeled procyanidin syntheses

✍ Scribed by Marie-Clotilde Pierre; Catherine Chèze; Joseph Vercauteren


Publisher
Elsevier Science
Year
1997
Tongue
French
Weight
263 KB
Volume
38
Category
Article
ISSN
0040-4039

No coin nor oath required. For personal study only.

✦ Synopsis


Deuterium-labeled procyanidins have been prepered by hemisynthesis from taxifolin in order to investigate their metabolism in human. The structures of the desired deuterated natural compounds B3 10D (RI=D, R2=H) and B4 13D (RI=D, R2=-H) were proven by spectroscopic and physical properties means, including 2H NMR spectrum. By-products with unatural absolute configuration at some centers were also formed along the process and were characterised.


📜 SIMILAR VOLUMES


Syntheses of deuterium labeled bile alco
✍ Kenji Kihira; Daisaku Kosaka; Mizuho Une; Toshihito Hiraoka; Goro Kajiyama; Taka 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 French ⚖ 319 KB

5B-cholestane-3a,7a,12a,23,25p e n t o l e x h i b i t e d t h e f r a g m e n t i o n a t m/z 131 a s t h e b a s e i o n , a n d o t h e r i o n s o b s e r v e d were q u i t e weak (less t h a n 5% c o m p a r e t o t h e b a s e i o n ) i n t h e i r mass s p e c t r a analyzed as t r i m e t h

Regioselective syntheses of deuterium la
✍ John Simmons; Ronald T. Borchardt 📂 Article 📅 1983 🏛 John Wiley and Sons 🌐 French ⚖ 373 KB

Convenient syntheses of 2,4-,a,a-and 5,B-deuterium labelled 6-hydroxydopamines have been developed. 2,4,5-Trimethoxybenzaldehyde (1) was reductively aminated to give 2,4,5-trimethoxybenzylamine (2). Quaternization of the amine with methyliodide followed by displacement with cyanide gave 2,4,5-trimet

Syntheses of deuterium labelled atropine
✍ Frédéric Balssa; Yves Bonnaire 📂 Article 📅 2009 🏛 John Wiley and Sons 🌐 French ⚖ 132 KB

## Abstract Easy preparative scale syntheses of deuterium labelled atropine and scopolamine are described. [^2^H~3~]‐atropine and [^2^H~3~]‐scopolamine are obtained in good yield and good isotopic purity in two steps starting from the unlabelled alkaloids. Copyright © 2009 John Wiley & Sons, Ltd.

Syntheses of deuterium-labelled pristani
✍ D.W. Johnson; A. Poulos 📂 Article 📅 1988 🏛 Elsevier Science 🌐 English ⚖ 392 KB

The syntheses of tetradeuterated pristanic and phytanic acids, suitable for isotope dilution quantitation of pristanic and phytanic acids in plasma, is described. The key reaction, a Favorsky rearrangement, which simultaneously generates a methyl branch and incorporates deuterium, should be suitable

Syntheses with stable isotopes: Synthesi
✍ D. L. Hachey; P. A. Szczepanik; O. W. Berngruber; P. D. Klein 📂 Article 📅 1973 🏛 John Wiley and Sons 🌐 French ⚖ 448 KB

## Abstract A series of 5β‐cholanic acids labeled with deuterium in the A ring were prepared by exchange labeling of the corresponding ketone by column chromatography on deuterated alumina. Factors affecting yield and labeling efficiency are discussed. 5β‐Cholanic acids labeled with ^13^C in the ca